Updated on 2024/10/24

写真a

 
Miyatake Kenji
 
Organization
Graduate Faculty of Interdisciplinary Research Faculty of Engineering Materials Science (Clean Energy Research Center) Professor
Title
Professor
Homepage
http://www.clean.yamanashi.ac.jp/en/

Research History

  • Waseda University   Waseda University   Professor

    2020.4

  • Waseda University   Professor

    2020.4

  • University of Yamanashi   University of Yamanashi   Professor

    2009.4

  • University of Yamanashi   Professor

    2009.4

  • University of Yamanashi   University of Yamanashi   Associate Professor

    2001.7 - 2009.3

  • Waseda University   Waseda University   Senior Assistant Professor

    1999.4 - 2001.7

  • Waseda University   Waseda University   Assistant Professor

    1995.4 - 1996.3

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Education

  • Waseda University

    - 1996.3

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    Country： Japan

  • Waseda University

    - 1991.3

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    Country： Japan

Degree

  • Doctor of Engineering ( 1996.3   Waseda University )

Research Areas

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Electron device and electronic equipment

  • Nanotechnology/Materials / Polymer materials

  • Nanotechnology/Materials / Organic functional materials

  • Nanotechnology/Materials / Polymer chemistry

  • Nanotechnology/Materials / Polymer materials

Subject of research

  • Study on ion conducting polymer membranes

  • Study on polymer electrolyte fuel cells

Research Projects

  • アニオン膜型アルカリ 水電解セルの要素研究と実用化技術の確立  Major achievement

    2023.7 - 2025.3

    NEDO  燃料電池等利用の飛躍的拡大に向けた共通課題解決型産学官連携研 究開発事業  水素利用等高度化先端技術開発

    宮武健治

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    Authorship：Principal investigator  Grant type：Competitive  Type of fund：：Funded research

  • 再生可能エネルギー最大導入に向けた電気化学材料研究拠点

    2022.9 - 2031.3

    データ創出・活用型 マテリアル研究開発プロジェクト

    杉山正和

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    Grant type：Competitive 

  • アニオン導電性高分子：エネルギーデバイスのための新展開

    2022.9 - 2025.3

    日本学術振興会  特別研究員奨励費

    宮武健治

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    Grant type：Competitive 

  • 高性能イオン導電性薄膜の開発と水素製造デバイスへの応用

    2022.4 - 2024.3

    公益財団法人JKA  研究補助事業 

    宮武健治

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    Grant type：Competitive 

  • アニオン導電性薄膜の導電率・安定性の両立と高性能アルカリ形燃料電池への挑戦

    2022.4 - 2023.3

    岩谷直治記念財団  岩谷科学技術研究助成

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    Grant type：Competitive 

  • 高性能アニオン膜型アルカリ水電解のための材料開発と膜電極接合体に関する研究開発

    2021.7 - 2023.3

    NEDO  水素利用等先導研究開発事業 

    宮武健治

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    Grant type：Competitive 

  • 新型アニオン導電性薄膜を用いた高性能アルカリ型燃料電池の開発

    2020.4 - 2022.3

    公益財団法人JKA  研究補助事業 

    宮武健治

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    Grant type：Competitive 

  • 高性能アニオン交換膜を用いた水電解水素製造技術の開発

    2019.7 - 2021.7

    NEDO  エネルギー・環境新技術先導研究プログラム

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    Grant type：Competitive 

  • 燃料電池の高性能化を目指した高耐久性イオン伝導膜の設計と開発

    2019.4 - 2022.3

    科学技術振興機構  国際科学技術共同研究推進事業

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    Grant type：Competitive 

  • Creation of Innovative Electrochemical Capacitors Using Anion Exchange Membrane as Polymer Electrolyte for Use in Fuel Cells

    Grant number：19K05596  2019.4 - 2022.3

    Japan Society for the Promotion of Science  University of Yamanashi  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    Nohara Shinji

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    In order to create innovative electrochemical capacitors using anion exchange membrane as polymer electrolyte for use in fuel cells, we investigated effects of the membrane thickness and interface structure with activated carbon electrodes on electrochemical properties of the electric double layer capacitor (EDLC) cell. By optimizing thickness of electrolyte membrane and electrode/electrolyte interface structure, we succeeded in constructing an excellent EDLC cell with better rate-capability and lower cell resistance, compared with a cell using KOH solution. Furthermore, it was clarified that the electrolyte membrane had a good adaptability to a 2.5 V-class asymmetric capacitor composed of activated carbon and manganese-nickel oxide solid solution electrodes.

  • 高速移動水素による次世代創蓄電デバイスの設計

    2018.7 - 2023.3

    新学術領域研究（研究領域提案型）

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    Authorship：Principal investigator  Type of fund：：Science research expense

  • 高速移動水素による次世代創蓄電デバイスの設計

    2018.7 - 2023.3

    新学術領域研究（研究領域提案型）

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    Grant type：Competitive 

  • ポリフェニレンイオノマーへの挑戦

    2018.6 - 2020.3

    挑戦的研究（萌芽）

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    Authorship：Principal investigator  Type of fund：：Science research expense

  • ポリフェニレンイオノマーへの挑戦

    2018.6 - 2020.3

    挑戦的研究（萌芽）

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    Grant type：Competitive 

  • 多機能性高分子イオニクス材料の創製とエネルギーデバイスへの応用

    2018.4 - 2021.3

    基盤研究(B)（一般）

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    Authorship：Principal investigator  Type of fund：：Science research expense

  • 多機能性高分子イオニクス材料の創製とエネルギーデバイスへの応用

    2018.4 - 2021.3

    基盤研究(B)（一般）

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    Grant type：Competitive 

  • Study on performance and durability of fluorine-free fuel cells

    Grant number：26289254  2014.4 - 2017.3

    Japan Society for the Promotion of Science  University of Yamanashi  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    MIYATAKE Kenji, MIYAKE Junpei

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    A novel hydrocarbon ionomer membranes containing no fluorine atoms have been designed and synthesized. The membrane exhibited high proton conductivity and chemical stability, similar to or even better than those of the existing perfluorinated ionomer membranes. In addition, introducing a small portion of fluorinated aliphatic groups into hydrocarbon ionomer membranes was found to be effective in improving interfacial problems between the membranes and catalyst layers. With these ionomer membranes, high fuel cell performance was obtained.

  • 革新的アニオン導電性高分子を用いた三相界面の創製とアルカリ形燃料電池への展開

    2012.10 - 2019.3

    JST  CREST  戦略的創造研究推進事業

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    Authorship：Principal investigator  Type of fund：：Funded research

  • 革新的アニオン導電性高分子を用いた三相界面の創製とアルカリ形燃料電池への展開

    2012.10 - 2019.3

    JST  CREST  戦略的創造研究推進事業

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    Grant type：Competitive 

  • Development of highly stable anion exchange membranes for high performance alkaline fuel cells

    Grant number：23350089  2011.4 - 2014.3

    Japan Society for the Promotion of Science  University of Yamanashi  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    MIYATAKE Kenji, BAE Byungchan

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    Anion conductive aromatic multiblock copolymers containing ammonium-substituted fluorene groups, were synthesized The quaternized multiblock copolymers produced ductile, bendable, and transparent membranes. A well-controlled multiblock structure was responsible for the developed hydrophobic/hydrophilic phase separation and interconnected ion transporting pathway, as confirmed by scanning transmission electron microscopic observation. The ionomer membranes showed high hydroxide ion conductivities in water. The durabilities of the membranes were evaluated under severe, accelerated-aging conditions, and minor degradation was recognized. A noble metal-free direct hydrazine fuel cell was operated with the QPE membrane at 80 degree C. High maximum power density was achieved.

  • Study on proton conductive polymers with superacid groups

    Grant number：23656427  2011 - 2012

    Japan Society for the Promotion of Science  University of Yamanashi  Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Exploratory Research

    MIYATAKE Kenji

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    The objective of the research is to evaluate the effect of superacid groups on the properties of aromatic polymers as ion exchange membranes for polymer electrolyte fuel cells(PEFCs). The title polymers were synthesized by Ullmann coupling reaction of iodo- or bromo-substituted poly(arylene ether)s. It was found that the superacid groups significantly improved the hydrophilic/hydrophobic phase separation and proton conductivity of the poly(arylene ether) ionomer membranes. The effect was more pronounced for the block copolymers compared to the homopolymers and random copolymers. The superacid-modified poly(arylene ether) ionomer membranes showed excellent fuel cell performance.

  • Study on hydrocarbon membrane electrode assemblies for high performance fuel cells

    Grant number：20350086  2008 - 2010

    Japan Society for the Promotion of Science  University of Yamanashi  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    MIYATAKE Kenji, BAE Byungchan

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    The objective of this research is to produce novel polymer electrolyte materials and membrane electrode assemblies (MEAs) therewith for high performance polymer electrolyte fuel cells. Structural requirements have been proposed in aromatic polymer electrolytes for improving proton conducting properties at no expense of stability and gas permeability. It was found that multiblock poly (arylene ether) s containing highly dense acidic groups in hydrophilic blocks showed extremely high proton conductivity. Superior fuel cell performance was achieved with the electrolyte materials under severe operating conditions of 100℃ and 30% RH (relative humidity).

  • 燃料電池用ポリエーテル系電解質と膜電極接合体に関する研究

    Grant number：18750167  2006 - 2007

    日本学術振興会  科学研究費助成事業  若手研究(B)

    宮武 健治

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    昨年度分子構造を最適化したポリエーテル系電解質(SPE-3)をガス拡散電極へ適用し,その物性を評価した。SPE-3をジメチルアセトアミドに溶解し,市販の白金ナノ粒子高分散担持カーボンブラック(Pt-CB)触媒と混合した。ペースト化した溶液をスプレードライヤーを用いて蒸発乾燥させ,SPE-3を被覆したPt-CBを調製した。電子顕微鏡観察から,SPE-3電解質が触媒上に2-3nm程度の厚さで均一に被覆できていることを確認した。また,水銀ポロシメトリー測定により,触媒のナノ空間にも電解質が充填できていることが示唆された。
    調製したSPE-3被覆Pt/CB触媒を水/2-プロパノール溶液を用いて再度ペースト化し,撥水化処理を施して拡散層を塗布したカーボンペーパー上に塗布してガス拡散電極とした。SPE-3とカーボンの重量混合比が異なる(SPE-3/CB=0.5,0.8,1.1)3種の電極を調製した。作製した電極は,Nafion NRE212膜を用いてホットプレスを行うことによりMEAとした。セル温度を80℃とし,燃料に加湿水素,酸化剤に加湿酸素を用いて燃料電池運転を行った。オーム抵抗は電解質膜の抵抗(0.05Ωcm^2)よりも若干高い値であったが,カソード加湿温度を上げることにより電解質膜抵抗とほぼ同じ値にまで低下した。SPE-3/CB比やカソード加湿条件が異なるいずれの条件においても,アノード分極はほぼ無視できるほど小さい値であった。一方,カソード特性は低電流密度では比較的優れた性能が得られたが,高電流密度においては特に高加湿条件で著しい分極の増大が認められた。高加湿条件ではSPE-3の膨潤が大きく,酸素の拡散が阻害されるためと考察できる。アノード加湿温度を低下することによりカソードからの生成水逆拡散が増大し,性能を向上させることに成功した。

  • 高性能燃料電池のためのポリエーテル系電解質膜に関する研究

    Grant number：16750160  2004 - 2005

    日本学術振興会  科学研究費助成事業  若手研究(B)

    宮武 健治

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    平成17年度はポリエーテル電解質(SPE-1)の改良と膜電極接合体の作成および燃料電池運転試験を行った。低加湿条件下でのプロトン伝導度の向上を目的として、イオン交換容量(IEC)を増大させ分岐または架橋点を導入して安定化した新型のSPE-1膜を合成した。これら分岐・架橋SPE-1膜のプロトン伝導度は未架橋膜に比べて高い値を示した。特に、高いIEC(2.50meq/g)を有する架橋膜ではその効果が顕著であり、100、120℃いずれの温度でも低加湿条件下でのプロトン伝導度を1桁程度向上させることに成功した。
    SPE-1電解質を用いてコロイド沈着法により触媒層を調製し、燃料電池運転試験を実施した。電解質とカーボンブラックの組成比(SPE-1/CB)を変化させてカソード特性を調べたところ、電流密度900mA/cm^2におけるSPE/CB=1.0電極の白金質量活性は27A/gであり、ペースト法で調製した同じ組成の電極の約2倍高い活性が得られた。この値は、フッ素系電解質(Nafion)で最適化した電極の質量活性20A/gをも上回っている。また、Tafel勾配は理論値の70mV/decにほぼ一致した値が得られていることから、プロトンと酸素が十分に供給されていることが確認できた。
    実用電位0.7Vにおける電流密度はペースト法電極の2倍(320mA/cm^2)に達した。コロイド沈着法により物質供給を阻害することなく触媒利用率が高められた結果、総合的な性能が大幅に向上したものと考えられる。さらに、濃度過電圧はコロイド沈着法のSPE/CB=0.5の電極が、最も低い値を示しており、高電流密度運転が要求される場合には、0.5≦SPE/CB<1.0の範囲が適していることを見出した。以上の成果から、新型ポリエーテル電解質を用いることにより燃料電池の高性能化が達成できることが明らかとなった。

  • 高温安定型プロトン伝導性高分子固体電解質膜の合成

    Grant number：14750664  2002 - 2003

    日本学術振興会  科学研究費助成事業  若手研究(B)

    宮武 健治

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    平成14年度において、嵩高い疎水性(フルオレニル)基を有するポリイミド電解質が、高温で高いプロトン伝導度を示すことを見出した。フルオレニル基が剛直なポリイミド鎖間に水を保持する空間を形成し、"水分子の閉じ込め効果"により100℃以上でのプロトン伝導度の世界最高値(1.67Scm^<-1>)が達成された。本年度は安定性を一層向上させることを目的として、スルホン酸基をフルオレニル基に導入した新型ポリエーテル電解質の合成と物性評価を行った。原料重合体はフルオレニリデンビフェノールとビスフルオロフェニルスルホンの重縮合により合成し、これをクロロ硫酸を用いてスルホン酸化することにより電解質とした。スルホン酸化反応はクロロ硫酸添加量により制御が可能であり、スルホン酸化度が異なる一連の電解質を合成した。^1H-NMRスペクトルにより、フルオレン環の2,7-位のみにスルホン酸基を導入できたことを確認した。得られた電解質は極性有機溶媒に可溶で、溶液キャスト法により均一で強靭な無色透明の膜として得られた。熱重量示差熱分析において、Nafionや他の炭化水素系電解質膜と比較して同程度の熱安定性を確認、また明確なガラス転移温度は観察されなかった。イオン交換容量(IEC)が1.7meq/9g以下の膜はフェントン試薬中30分以上形状を維持し、高い酸化安定性を示した。高温高湿雰囲気における分子量変化はなく、優れた加水分解安定性を示した。スルホン酸基を側鎖フルオレニル基に導入することで主鎖近傍の疎水性が保たれ、主鎖切断が抑制されるものと考えられる。100%RH下においてIECが1.1meq/g以上の膜は、Nafion112と同程度以上のプロトン伝導度を示した。特にIECが1.14meq/gの膜は100℃以上の高温でもプロトン伝導度が低下せず、140℃で0.20Scm^<-1>と高い値を保持した。以上のように、高温固体高分子形燃料電池用の新しいプロトン伝導性電解質膜を創製することが出来た。

  • One-Step Multi-electron Transfer for Molecular Conversion

    Grant number：08044174  1996 - 1998

    Japan Society for the Promotion of Science  Waseda University  Grants-in-Aid for Scientific Research  Grant-in-Aid for international Scientific Research

    TSUCHIDA Eishun, OYAIZU Kenichi, KOMATSU Teruyuki, NISHIDA Hiroyuki, ANSON Fred C, MIYATAKE Kenji

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    The research project aims at elucidating the multi-electron transfer process of oxygen molecules incorporated into the macromolecule-metal complexes, in order to establish novel molecular conversion processes which are promoted by the four-electron reduction of oxygen.
    Followings have been established : Detailed analysis of the oxygen splitting reaction by one-step four-electron transfer, establishment of oxidative polymerization facilitated by multi-electron transfer process, elucidation of multi-electron transfer process in molecular assemblies. Based on these results, a general strategy to allow molecular conversions to proceed efficiently by multi-electron transfer process has been provided.
    1. Multi-nuclear metal complexes that show one-step multi-electron transfer processes were synthesized and their structure was determined. A general method to provide a one-step multi-electron transfer was provided.
    2. Oxygen splitting reaction by way of a μ-dioxo intermediate MOM-OO-MOM was established.
    3. Synthesis of novel compounds, polysulfoniums and polythioethers, were established, and their properties were determined in detail.
    4. Structure and properties of molecular assembly systems were elucidated, in terms of photoelectron transfer process.
    5. Synthesis of high molecular-weight polyheteroacenes were established, and their physicochemical properties were determined.

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Papers

  • Highly Gas Permeable Proton-conducting Ionomers Containing Cyclohexyl Groups: Synthesis, Properties and Applications in Fuel Cell Electrodes Reviewed Major achievement

    Y. Zou, K. Miyatake, F. Liu, L. Guo, C. Y. Wong, A. M. A. Mahmoud, V. Yadav, F. Xian

    MACROMOLECULES   57 ( 20 )   9833 - 9840   2024.10( ISSN：0024-9297 )

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1021/acs.macromol.4c02192

    DOI： 10.1021/acs.macromol.4c02192

    Other Link： https://doi.org/10.1021/acs.macromol.4c02192

  • Poly(arylene piperidinium) Terpolymer Membranes with Dual Piperidinium Cations and Semi-Fluoroalkyl Pendants for Anion Exchange Membrane Water Electrolyzers Reviewed Major achievement

    V. Yadav, K. Miyatake, A. M. A. Mahmoud, F. Liu, F. Xian, L. Guo, C. Y. Wong, T. Iwataki, M. Uchida, and K, Kakinuma

    Journal of Materials Chemistry A   12 ( 37 )   25429 - 25441   2024.10( ISSN：2050-7488 )

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1039/d4ta03630a

    Other Link： https://doi.org/10.1039/D4TA03630A

  • Polyphenylene-based Anion Exchange Membranes with Robust Hydrophobic Components Designed for High-performance and Durable Anion Exchange Membrane Water Electrolyzers Using Non-PGM Anode Catalysts Reviewed Major achievement

    F. Liu, K. Miyatake, A. M. A. Mahmoud, V. Yadav, F. Xian, L. Guo, C. Y. Wong, T. Iwataki, Y. Shirase, K. Kakinuma, M. Uchida

    Advanced Energy Materials   14   2404089   2024.10( ISSN：1614-6832 )

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1002/aenm.202404089

    Other Link： https://doi.org/10.1002/aenm.202404089

  • Polyphenylene Ionomer as a Fortifier of Microphase Separation in Highly Conductive and Durable Polybenzimidazole-Based High-Temperature Proton Exchange Membranes Reviewed International coauthorship Major achievement

    Y. Bai, M. Xiao, C. Wang, S. Wang, Y. Meng, K. Miyatake

    Advanced Energy Materials   14 ( 33 )   2400751   2024.9( ISSN：1614-6832 )

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    Authorship：Last author   Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1002/aenm.202400751

    DOI： 10.1002/aenm.202400751

  • High-performance anion exchange membrane water electrolyzers enabled by highly gas permeable and dimensionally stable anion exchange ionomers Reviewed Major achievement

    F. Liu, K. Miyatake, M. Tanabe, A. M. A. Mahmoud, V. Yadav, L. Guo, C. Y. Wong, T. Iwataki, M. Uchida, K. Kakinuma

    Advanced Science   11 ( 29 )   2402969   2024.8( ISSN：2198-3844 )

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1002/advs.202402969

    DOI： 10.1002/advs.202402969

    Other Link： https://onlinelibrary.wiley.com/doi/10.1002/advs.202402969

  • Aryl Ether-Free Polymer Electrolytes for Electrochemical and Energy Devices Reviewed International coauthorship Major achievement

    E. J. Park, P. Jannasch, K. Miyatake, C. Bae, K. Noonan, C. Fujimoto, S. Holdcroft, J. R. Varcoe, D. Henkensmeier, M. D. Guiver, Y. S. Kim

    CHEMICAL SOCIETY REVIEWS   53 ( 11 )   5704 - 5780   2024.6( ISSN：0306-0012 )

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1039/d3cs00186e

    DOI： 10.1039/d3cs00186e

  • Effect of Radical-mediated Cross-linking on Partially Fluorinated Aromatic Anion Exchange Membranes and Their Applications in Alkaline Water Electrolysis Cells Invited Reviewed International coauthorship Major achievement

    A. M. A. Mahmoud, K. Miyatake, F. Liu, V. Yadav, L. Guo, C. Y. Wong, T. Iwataki, K. Kakinuma, M. Uchida

    Advanced Energy and Sustainability Research   5 ( 3 )   2300236   2024.3( ISSN：2699-9412 )

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1002/aesr.202300236

  • Transient Distribution of Water in an Anion Exchange Membrane Fuel Cell Monitored by Operando Coherent Anti-Stokes Raman Scattering Spectroscopy Reviewed Major achievement

    S. W. Wakolo, K. Miyatake, J. Inukai

    ELECTROCHEMISTRY   92 ( 1 )   017005   2024.1( ISSN：1344-3542 )

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.5796/electrochemistry.23-00140

    DOI： 10.5796/electrochemistry.23-00140

  • Various States of Water Species in an Anion Exchange Membrane Characterized by Raman Spectroscopy under Controlled Temperature and Humidity Reviewed Major achievement

    S. W. Wakolo, D. A. Tryk, H. Nishiyama, K. Miyatake, A. Iiyama, J. Iuukai

    Phys. Chem. Chem. Phys.   26   1658 - 1670   2024.1( ISSN：1463-9084 )

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1039/d3cp03660j

    DOI： 10.1039/d3cp03660j

  • In-situ observation of an anion exchange membrane at various humidity by X-ray scattering Reviewed Major achievement

    K. Yoshida, T. Nagai, K. Ohara, Y. Shirase, K. Miyatake, J. Inukai

    JOURNAL OF MOLECULAR LIQUIDS   391   123197   2023.12( ISSN：0167-7322 )

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.molliq.2023.123197

    DOI： 10.1016/j.molliq.2023.123197

  • Highly Active Nanostructured NiCoMo-Based Catalyst for Oxygen Evolution in Anion-Exchange Membrane Water Electrolysis Reviewed Major achievement

    G. Shi, T. Iwataki, D. A. Tryk, M. Uchida, A. Iiyama, K. Terao, K. Tamoto, M. Yamaguchi, K. Miyatake, K. Kakinuma

    ACS Applied Energy Materials   6 ( 21 )   10742 - 10747   2023.10( ISSN：2574-0962 )

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：ACS  

    DOI： 10.1021/acsaem.3c02152

    DOI： 10.1021/acsaem.3c02152

  • The effect of the piperidinium structure on anion-exchange membranes for applications in alkaline water electrolysis cells Invited Reviewed Major achievement

    Y. Ozawa, T. Iwataki, M. Uchida, K. Kakinuma, K. Miyatake

    Journal of Materials Chemistry A   11   19925 - 19935   2023.9( ISSN：2050-7488 )

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    Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1039/d3ta03288d

  • Anion Exchange Membrane Reinforced with Polyethylene Substrate for alkaline fuel cell applications Invited Reviewed Major achievement

    A. M. A. Mahmoud, K. Nagahara, K. Miyatake

    Sust. Polym. Ener.   1   10012   2023.9

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    Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.35534/spe.2023.10012

  • Proton-Conductive Aromatic Membranes Reinforced with Poly(vinylidene fluoride) Nanofibers for High-Performance Durable Fuel Cells Reviewed Major achievement

    F. Liu, I. S. Kim, K. Miyatake

    Science Advances   9 ( 30 )   eadg9057   2023.7( ISSN：2375-2548 )

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    Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1126/sciadv.adg9057

    DOI： 10.1126/sciadv.adg9057

  • All-Solid-State Rechargeable Air Batteries Using Dihydroxybenzoquinone and Its Polymer as the Negative Electrode Reviewed Major achievement

    M. Yonenaga, Y. Kaiwa, K. Oka, K. Oyaizu, K. Miyatake

    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   62 ( 30 )   e202304366   2023.5( ISSN：1433-7851 )

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    Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1002/anie.202304366

    DOI： 10.1002/anie.202304366

  • Reinforcement Effect in Tandemly Sulfonated, Partially Fluorinated Polyphenylene PEMs for Fuel Cells Reviewed Major achievement

    L. Guo, A. Masuda, K. Miyatake

    RSC Advances   13   11225 - 11233   2023.4

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    Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1039/d3ra01041d

    DOI： 10.1039/d3ra01041d

  • Highly Conductive and Ultra Alkaline Stable Anion Exchange Membranes by Superacid Promoted Polycondensation for Fuel Cells Reviewed Major achievement

    A. M. A. Mahmoud, K. Miyatake

    ACS Applied Polymer Materials   5 ( 3 )   2243 - 2253   2023.3( ISSN：2637-6105 )

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：ACS  

    DOI： 10.1021/acsapm.2c02227

  • Terpolymer-Based Anion Exchange Membranes: Effect of Pendent Hexyl Groups on Membranes Properties Reviewed Major achievement

    Y. Ozawa, K. Miyatake

    BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN   96 ( 1 )   16 - 23   2023.1( ISSN：0009-2673 )

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：CHEMICAL SOCIETY OF JAPAN  

    DOI： 10.1246/bcsj.20220311

  • Tuning the Hydrophobic Component in Reinforced Poly(arylimidazolium)-Based Anion Exchange Membranes for Alkaline Fuel Cells Reviewed Major achievement

    A. M. A. Mahmoud, K. Miyatake

    ACS Applied Energy Materials   5 ( 12 )   15211 - 15221   2022.12( ISSN：2574-0962 )

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：ACS  

    DOI： 10.1021/acsaem.2c02868

  • Quaternary Ammonium-biphosphate Ion-pair Based Copolymers with Continuous H+ Transport Channels for High-temperature Proton Exchange Membrane Reviewed Major achievement

    J. Jiang, Z. Li, M. Xiao, S. Wang, K. Miyatake, Y. Meng

    JOURNAL OF MEMBRANE SCIENCE   660   120878   2022.8( ISSN：0376-7388 )

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    Authorship：Last author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier  

    DOI： 10.1016/j.memsci.2022.120878

  • Tuning Hydrophobic Composition in Terpolymer-based Anion Exchange Membranes to Balance Conductivity and Stability Reviewed Major achievement

    Y. Ozawa, Y. Shirase, K. Otsuji, K. Miyatake

    Molecular Systems Design & Engineering   7 ( 7 )   798 - 808   2022.7( ISSN：2058-9689 )

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    Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：RSC  

    DOI： 10.1039/d2me00027j

  • Tandem Effect of Two Sulfophenylene Groups in Aromatic Polymers for Fuel Cell Membranes Reviewed Major achievement

    L. Guo, K. Miyatake

    ACS Applied Energy Materials   5   5525 - 5530   2022.6( ISSN：2574-0962 )

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：ACS  

    DOI： 10.1021/acsaem.2c00940

  • Sulfonated and Fluorinated Aromatic Terpolymers as Proton Conductive Membranes: Synthesis, Structure, and Properties Reviewed Major achievement

    R. Kumao, K. Miyatake

    BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN   95 ( 5 )   707 - 712   2022.5( ISSN：0009-2673 )

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：CHEMICAL SOCIETY OF JAPAN  

    DOI： 10.1246/bcsj.20220057

  • Properties and Morphologies of Anion Exchange Membranes with Different Lengths of Fluorinated Hydrophobic Chains Reviewed Major achievement

    Y. Shirase, A. Matsumoto, K. L. Lim, D. A. Tryk, K. Miyatake, J. Inukai

    ACS Omega   7   13577 - 13587   2022.5( ISSN：2470-1343 )

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：ACS  

    DOI： 10.1021/acsomega.1c06958

  • Well-designed Polyphenylene PEMs with High Proton Conductivity and Chemical and Mechanical Durability for Fuel Cell Reviewed Major achievement

    F. Liu, K. Miyatake

    Journal of Materials Chemistry A   10 ( 14 )   7660 - 7667   2022.4( ISSN：2050-7488 )

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：RSC  

    DOI： 10.1039/d1ta10480b

  • Protocol for Synthesis and Characterization of ePTFE Reinforced, Sulfonated Polyphenylene in the Application to Proton Exchange Membrane Fuel Cells Reviewed Major achievement

    Z. Long, K. Miyatake

    STAR Protocols   3   101049   2022.3

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Cell Press  

    DOI： 10.1016/j.xpro.2021.101049

  • Highly conductive and alkaline stable partially fluorinated anion exchange membranes for alkaline fuel cells: Effect of ammonium head groups Reviewed Major achievement

    Ahmed Mohamed Ahmed Mahmoud, Kenji Miyatake

    JOURNAL OF MEMBRANE SCIENCE   643   120072   2022.3( ISSN：0376-7388 )

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier  

    DOI： 10.1016/j.memsci.2021.120072

  • Effect of Water Management in Membrane and Cathode Catalyst Layers on Suppressing the Performance Hysteresis Phenomenon in Anion-Exchange Membrane Fuel Cells Reviewed Major achievement

    K. Otsuji, Y. Shirase, T. Asakawa, N. Yokota, K. Nagase, W. Xu, P. Song, S. Wang, D. A. Tryk, K. Kakinuma, J. Inukai, K. Miyatake, M. Uchida

    JOURNAL OF POWER SOURCES   522   230997   2022.2( ISSN：0378-7753 )

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier  

    DOI： 10.1016/j.jpowsour.2022.230997

  • An Aromatic Ionomer in the Anode Catalyst Layer Improves the Start-up Durability of Polymer Electrolyte Fuel Cells Reviewed Major achievement

    T. Tanaka, M. Uchida, K. Miyatake

    Energy Advances   1   38 - 44   2022.1

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    Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：RSC  

    DOI： 10.1039/D1YA00024A

  • Poly(para-phenylene) Ionomer Membranes: Effect of Methyl and Trifluoromethyl Substituents Reviewed Major achievement

    L. Fanghua, J. Ahn, J. Miyake, K. Miyatake

    Polymer Chemistry   12   6101 - 6109   2021.11( ISSN：1759-9954 )

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    Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：RSC  

    DOI： 10.1039/d1py01141c

  • ePTFE Reinforced, Sulfonated Aromatic Polymer Membranes Enable Durable, High-temperature Operable PEMFCs Reviewed Major achievement

    Z. Long, K. Miyatake

    iScience   24   102962   2021.9

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Cell Press  

    DOI： 10.1016/j.isci.2021.102962

  • Reinforced Polyphenylene Ionomer Membranes Exhibiting High Fuel Cell Performance and Mechanical Durability Reviewed Major achievement

    J. Miyake, T. Watanabe, H. Shintani, Y. Sugawara, M. Uchida, K. Miyatake

    ACS Mater. Au   1   81 - 88   2021.9( ISSN：0897-4756 )

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    Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：ACS  

    DOI： 10.1021/acsmaterialsau.1c00002

  • Wet/dry Cycle Durability of Polyphenylene Ionomer Membranes in PEFC Reviewed Major achievement

    T. Tanaka, H. Shintani, Y. Sugawara, A. Masuda, N. Sato, M. Uchida, K. Miyatake

    JOURNAL OF POWER SOURCES ADV.   10   100063   2021.8( ISSN：0378-7753 )

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    Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier  

    DOI： 10.1016/j.powera.2021.100063

  • Tailoring the Hydrophilic and Hydrophobic Reaction Fields of the Electrode Interface on Single Crystal Pt Electrodes for Hydrogen Evolution/Oxidation Reactions Reviewed Major achievement

    S. Tanaka, S. Takaya, T. Kumeda, N. Hoshi, K. Miyatake, M. Nakamura

    INTERNATIONAL JOURNAL OF HYDROGEN ENERGY   46 ( 55 )   28078 - 28086   2021.8( ISSN：0360-3199 )

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier  

    DOI： 10.1016/j.ijhydene.2021.06.064

  • High Performance Fuel Cell Operable at 120 °C Using Polyphenylene Ionomer Membranes with Improved Interfacial Compatibility Reviewed Major achievement

    Z. Long, K. Miyatake

    ACS Applied Materials & Interfaces   13   15366 - 15372   2021.4( ISSN：1944-8244 )

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：ACS  

    DOI： 10.1021/acsami.1c04270

  • リチャージャブル燃料電池 Invited Reviewed Major achievement

    宮武 健治、小柳 津研一、三宅 純平

    水素エネルギーシステム   46   6 - 11   2021.3

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    Authorship：Lead author,　Corresponding author   Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：水素エネルギー協会  

  • 高速移動水素による次世代創蓄電デバイスの設計 Invited Reviewed Major achievement

    宮武健治

    まてりあ   60   161 - 164   2021.3

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    Authorship：Lead author,　Last author,　Corresponding author   Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：金属学会  

  • Performance Hysteresis Phenomena of Anion Exchange Membrane Fuel Cells Using an Fe-N-C Cathode Catalyst and an In-house-developed Polymer Electrolyte Reviewed Major achievement

    K. Otsuji, N. Yokota, D. A. Tryk, K. Kakinuma, K. Miyatake, M. Uchida

    JOURNAL OF POWER SOURCES   487   229407   2021.1( ISSN：0378-7753 )

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier  

    DOI： 10.1016/j.jpowsour.2020.229407

  • Anion Exchange Membranes Containing No β-Hydrogen Atoms on Ammonium Groups: Synthesis, Properties, and Alkaline Stability Reviewed Major achievement

    D. Koronka, K. Miyatake

    RSC Advances   11   1030 - 1038   2021.1

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：RSC  

    DOI： 10.1039/d0ra09308d

  • Structural Investigation of Sulfonated Polyphenylene Ionomers for the Design of Better Performing Proton-Conductive Membranes Reviewed Major achievement

    K. Shiino, T. Otomo, T. Yamada, H. Arima, K. Hiroi, S. Takata, J. Miyake, K. Miyatake

    ACS Appl. Polym. Mater.   2   5558 - 5565   2020.12( ISSN：2574-0962 )

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    DOI： 0.1021/acsapm.0c00895

  • Ladder-type Sulfonated Poly(arylene perfluoroalkylene)s for High Performance Proton Exchange Membrane Fuel Cells Reviewed Major achievement

    Z. Long, J. Miyake, K. Miyatake

    RSC Advances   10   41058 - 41064   2020.11

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    Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：RSC  

    DOI： 10.1039/d0ra08630d

  • Rechargeable Proton Exchange Membrane Fuel Cell Containing an Intrinsic Hydrogen Storage Polymer Reviewed Major achievement

    J. Miyake, Y. Ogawa, T. Tanaka, J. Ahn, K. Oka, K. Oyaizu, K. Miyatake

    Communications Chemistry   3   138   2020.10( ISSN：2399-3669 )

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    Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Springer Nature  

    DOI： 10.1038/s42004-020-00384-z

  • アルカリ形燃料電池：アニオン膜型の現状と課題へのアプローチ Invited Reviewed Major achievement

    宮武 健治

    燃料電池   19   67 - 71   2020.8

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    Authorship：Lead author,　Last author,　Corresponding author   Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：燃料電池開発情報センター  

  • Proton Exchange Membranes Containing Densely Sulfonated Quinquephenylene Groups for High Performance and Durable Fuel Cells Reviewed Major achievement

    Z. Long, J. Miyake, K. Miyatake

    J. Mater. Chem. A   8   12134 - 12140   2020.6( ISSN：2050-7488 )

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    Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：RSC  

    DOI： 10.1039/d0ta03435e

  • "Sublayered Thin Films of Hydrated Anion Exchange Ionomer for Fuel Cells Formed on SiO2 and Pt Substrates Analyzed by Neutron Reflectometry under Controlled Temperature and Humidity Conditions Reviewed Major achievement

    T. Kimura, T. Kawamoto, M. Aoki, T. Mizusawa, N. L. Yamada, K. Miyatake, J. Inukai

    Langmuir   36 ( 18 )   4995 - 4963   2020.5( ISSN：0743-7463 )

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：ACS  

    Anion-conductive ionomers are used for electrolyte membranes in membrane-electrode assemblies and for binders in catalyst layers in anion exchange membrane fuel cells (AEMFCs). The conformations of these ionomers as well as their water distribution are important for designing new efficient/durable anion-conductive ionomers for AEMFCs. For a deeper understanding of the distribution of deuterium oxide (D2O) as a function of depth, neutron reflectometry (NR) was carried out on thin films of an anion exchange ionomer, BAF-QAF, with a thickness of approximately 60 nm formed on a thermally formed SiO2 film on Si(100) and on a 20 nm Pt layer deposited on the SiO2 film at a temperature of 60 °C and relative humidities of 0, 50, 70, and 90%. Clear NR modulation was obtained under each condition. The NR data were fit very well with a three-sublayered model parallel to the substrate with different densities of BAF-QAF and D2O. The influence of the SiO2 and Pt substrates was observed not only at the BAF-QAF/substrate interface but also on the entire thin film. The D2O absorption/desorption behavior in each sublayer differed in the BAF-QAF films cast on SiO2 and Pt. The BAF-QAF/SiO2 interface was rather hydrophilic, while the BAF-QAF/Pt interface was very hydrophobic.

    DOI： 10.1021/acs.langmuir.0c00440

    PubMed

  • Sulfonated Poly(arylene perfluoroalkylene) Terpolymers as Novel Proton Exchange Membranes for High Performance Fuel Cells Reviewed Major achievement

    Z. Long, J. Miyake, K. Miyatake

    Bull. Chem. Soc. Jpn.   93 ( 3 )   338 - 344   2020.3( ISSN：0009-2673 )

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    Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Chem. Soc. Jpn.  

    DOI： 10.1246/bcsj.20190351

  • Differences in the Synthetic Method Affected Copolymer Sequence and Membrane Properties of Sulfonated Polymers Reviewed Major achievement

    I. Hosaka, T. Sawano. T. Kimura, A. Matsumoto, J. Miyake, K. Miyatake

    Bull. Chem. Soc. Jpn   93 ( 3 )   393 - 398   2020.3( ISSN：0009-2673 )

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    Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Chem. Soc. Jpn.  

    DOI： 10.1246/bcsj.20190309

  • アニオン導電性高分子薄膜の設計とアルカリ形燃料電池への展開 Major achievement

    Junpei Miyake, Kenji Miyatake

    高分子   69 ( 3 )   110 - 111   2020.3

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    Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Polymer Society of Japan  

  • Highly Anion Conductive Polymers: How Do Hexafluoroisopropylidene Groups Affect Membrane Properties and Alkaline Fuel Cell Performance? Reviewed Major achievement

    T. Kimura, A. Matsumoto, J. Inukai, K. Miyatake

    ACS Appl. Energy Mater.   3 ( 1 )   469 - 477   2020.1( ISSN：1944-8244 )

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    Novel anion conductive aromatic copolymers containing hexafluoroisopropylidene groups as the hydrophobic component and fluorenyl groups substituted with pendant hexyltrimethylammonium groups as the hydrophilic component were synthesized and characterized. Precursor copolymers, BAF-AF, were synthesized by a nickel(0) promoted polycondensation reaction and had a high molecular weight (M-n = 10-12 kDa, M-w = 77-115 kDa). Quaternization of BAF-AF using dimethyl sulfate gave tough and bendable thin BAF-QAF membranes having the ion exchange capacity (IEC) from 1.3 to 2.4 mequiv g(-1) by solution casting. The morphology of BAF-QAFs was investigated by TEM images and SAXS profiles, and a nanoscale fine phase-separated structure was confirmed. The BAF-QAF membrane with IEC of 2.4 mequiv g(-1) showed a superior OH- conductivity (134 mS cm(-1) at 80 degrees C) in water. The membranes retained high conductivity under strongly alkaline conditions (similar to 4 M KOH at 80 degrees C) for 1000 h. An H-2/O-2 anion alkaline fuel cell using the BAF-QAF membrane and binder achieved the maximum power density of 319 mW cm(-2) at 702 mA cm(-2) at 60 degrees C and 100% RH. Hexafluoroisopropylidene groups contributed to improving membrane properties as anion exchange membranes for alkaline fuel cells.

    DOI： 10.1021/acsaem.9b01733

    Web of Science

  • Partially Fluorinated Copolymers Containing Pendant Piperidinium Head Groups as Anion Exchange Membranes for Alkaline Fuel Cells Reviewed Major achievement

    D. Koronka, A. Matsumoto, K. Otsuji, K. Miyatake

    RSC Advances   9   37391 - 37402   2019.12( ISSN：2046-2069 )

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    Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Royal Society of Chemistry  

    DOI： 10.1039/c9ra07775h

  • Partially Fluorinated Polyphenylene Ionomers as Proton Exchange Membranes for Fuel Cells: Effect of Pendant Multi-sulfophenylene Groups Reviewed Major achievement

    Z. Long, J. Miyake, K. Miyatake

    ACS Appl. Energy Mater.   2   7527 - 7534   2019.10( ISSN：1944-8244 )

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    Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：ACS  

    DOI： 10.1021/acsaem.9b01513

  • Sublayered Structures of Hydrated Nafion Thin Film Formed by Casting on Pt Substrate Analyzed by X-ray Absorption Spectroscopy under Ambient Conditions and Neutron Reflectometry at Temperature of 80 °C and Relative Humidity of 30-80% Reviewed Major achievement

    T. Kawamoto, M. Aoki, T. Kimura, P. Chinapang, T. Mizusawa, N. L. Yamada, F. Nemoto, T. Watanabe, H. Tanida, M. Matsumoto, H. Imai, J. Miyake, K. Miyatake, J. Inukai

    ELECTROCHEMISTRY   87 ( 5 )   270 - 275   2019.8( ISSN：1344-3542  eISSN：2186-2451 )

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：The Electrochemical Society of Japan  

    The structures of polymer electrolyte membranes and catalyst layer binders and the distribution of water therein are important for designing new ion-conductive ionomers for polymer electrolyte fuel cells. To aid the understanding of the in-plane water distribution, neutron reflectometry (NR) was carried out on a Nafion (R) film with a thickness of 150 nm formed on a 20-nm Pt layer deposited on Si(100) with a native SiO2 layer. By means of ambient pressure X-ray absorption spectroscopy at room temperature in air, the Pt substrate was found to be metallic. For NR, the temperature was set at 80 degrees C and the relative humidity at 30, 50 and 80%, simulating the conditions for power generation. Clear NR modulation was obtained under each condition. NR data were fit very well with a 3-sublayered model parallel to the substrate with different densities of Nafion and water. The influence of the Pt substrate was observed not only at the Nafion/Pt interface, but also on the thin-film structure. The water uptake in a Nafion film on Pt also differed from that on SiO2. At 80 degrees C, the surface of the Pt substrate was proposed to be oxidized, and the Nafion/Pt interface was found to contain water, in contrast to the interface observed at room temperature. (C) The Electrochemical Society of Japan, All rights reserved.

    DOI： 10.5796/electrochemistry.19-00042

    Web of Science

  • プロトン導電性高分子薄膜の設計と燃料電池への応用 Major achievement

    Junpei Miyake, Kenji Miyatake

    化学と工業   72 ( 8 )   665 - 667   2019.8

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    Authorship：Corresponding author   Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Chemical society of Japan  

  • In-Plane Distribution of Water inside Nafion Thin Film Analyzed by Neutron Reflectivity at Temperature of 80 °C and Relative Humidity of 30-80% Based on 4-Layered Structural Model Reviewed Major achievement

    T. Kawamoto, M. Aoki, T. Kimura, T. Mizusawa, N. L. Yamada, J. Miyake, K. Miyatake, J. Inukai

    JAPANESE JOURNAL OF APPLIED PHYSICS   58   SIID01   2019.7( ISSN：0021-4922  eISSN：1347-4065 )

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：The Japan Society of Applied Physics  

    Structures of polymer electrolyte membranes and binders and the distribution of water inside are important for designing new ion-conductive ionomers for polymer electrolyte fuel cells. Neutron reflectometry (NR) was carried out on a Nafion (R) film with a thickness of 100 nm formed on native SiO2 surface on Si(100) for understanding the in-plane water distribution. The temperature was set at 80 degrees C and the relative humidity at 30, 50, 65, and 80% for NR measurements, simulating the conditions for the power generation. Clear NR modulation was obtained under each condition. NR data were fit very well with a 4-layer model parallel to the substrate with different densities of Nafion and water. At the interface between the Nafion film and the Si substrate, a 1 nm water-rich layer was observed under all conditions. The water concentration increased with humidity at all 4 layers, but the thickness increased mainly at the bulk layer. (C) 2019 The Japan Society of Applied Physics

    DOI： 10.7567/1347-4065/ab0c7c

    Web of Science

  • Highly Stable Polyphenylene Ionomer Membrane from Dichlorobiphenyls Reviewed Major achievement

    K. Shiino, J. Miyake, K. Miyatake

    CHEMICAL COMMUNICATIONS   55   7073 - 7076   2019.7( ISSN：1359-7345 )

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    Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：ROYAL SOCIETY OF CHEMISTRY  

    DOI： 10.1039/c9cc02475a

  • 水素系電解質膜の開発状況 Invited Major achievement

    Kenji Miyatake

    工業材料   7   24 - 27   2019.7

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    Authorship：Lead author,　Last author,　Corresponding author   Language：Chinese   Publishing type：Research paper (scientific journal)  

  • "Quaternized Poly(arylene perfluoroalkylene)s (QPAFs) for Alkaline Fuel Cells – A Perspective Invited Reviewed Major achievement

    J. Miyake, K. Miyatake

    Sustainable Energy & Fuels   3   1916 - 1928   2019.5( ISSN：2398-4902 )

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：ROYAL SOCIETY OF CHEMISTRY  

    DOI： 10.1039/c9se00106a

  • Effect of Alkanediol Additives on the Properties of Polyphenylene-Based Proton Exchange Membranes Reviewed Major achievement

    Z. Long, Y. Zhang, J. Miyake, K. Miyatake

    INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH   58   9915 - 9920   2019.5( ISSN：0888-5885 )

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    Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：ACS  

    DOI： 10.1021/acs.iecr.9b01564

  • Durability of Newly Developed Polyphenylene-based Ionomer Membranes in Polymer Electrolyte Fuel cells: Accelerated Stress Evaluation Reviewed Major achievement

    R. Shimizu, K. Otsuji, A. Masuda, N. Sato, M. Kusakabe, A. Iiyama, K. Miyatake, M. Uchida

    JOURNAL OF THE ELECTROCHEMICAL SOCIETY   166 ( 7 )   F3105 - F3110   2019.4( ISSN：0013-4651 )

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：ELECTROCHEMICAL SOCIETY  

    DOI： 10.1149/2.0131907jes

  • Effect of Cross-linking on the Properties of Partially Fluorinated Anion Exchange Membranes Reviewed Major achievement

    D. Koronka, A. M. A. Mahmoud, K. Miyatake

    JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY   57   1059 - 1069   2019.4( ISSN：0887-624X )

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    Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1002/pola.29360

  • Chemically Stable, Highly Anion Conductive Polymers Composed of Quinquephenylene and Pendant Ammonium Groups Reviewed Major achievement

    R. Akiyama, N. Yokota, K. Miyatake

    MACROMOLECULES   52   2131 - 2138   2019.4( ISSN：0024-9297 )

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    Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：ACS  

    DOI： 10.1021/acs.macromol.8b02199

  • Structurally Well-Defined Anion Exchange Membranes Containing Perfluoroalkyl and Ammonium-Functionalized Fluorenyl Groups Reviewed Major achievement

    M. Ozawa, T. Kimura, K. Otsuji, R. Akiyama, J. Miyake, M. Uchida, J. Inukai, K. Miyatake

    ACS Omega   3 ( 11 )   16413 - 16419   2018.11

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    Novel anion-conductive polymers containing perfluoroalkyl and ammonium-functionalized fluorene groups were synthesized and characterized. The quaternized polymers synthesized using a dimethylaminated fluorene monomer had a well-defined chemical structure in which each fluorenyl group was substituted with two ammonium groups at specific positions. The resulting polymers had a high molecular weight (Mn = 8.9-13.8 kDa, Mw = 13.7-24.5 kDa) to provide bendable thin membranes with the ion-exchange capacity (IEC) ranging from 0.7 to 1.9 mequiv g-1 by solution casting. Both transmission electron microscopy images and small-angle X-ray scattering patterns suggested that the polymer membranes possessed a nanoscale phase-separated morphology based on the hydrophilic/hydrophobic differences in the polymer components. Unlike typical anion-exchange membranes found in the literature, hydroxide ion conductivity of the membranes did not increase with increasing IEC because of their high swelling capability in water. The membrane with IEC = 1.2 mequiv g-1 showed balanced properties of high hydroxide ion conductivity (81 mS cm-1 at 80 °C in water) and mechanical strength (>100% elongation and 14 MPa maximum stress at 80 °C, 60% relative humidity). The polymer main chains were stable in 4 M KOH for 1000 h, whereas the trimethylbenzyl-type ammonium groups degraded under the conditions to cause loss in the hydroxide ion conductivity. An H2/O2 fuel cell with the membrane with IEC = 1.2 mequiv g-1 exhibited a maximum power density of 242 mW cm-2 at 580 mA cm-2 current density.

    DOI： 10.1021/acsomega.8b02742

    PubMed

  • Sulfonated Aromatic Polymers Containing Hexafluoroisopropylidene Groups: Simple but Effective Structure for Fuel Cell Membranes Reviewed Major achievement

    J. Ahn, R. Shimizu, K. Miyatake

    J. Mater. Chem. A   6   24625 - 24632   2018.11( ISSN：2050-7488 )

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    Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：RSC  

    DOI： 10.1039/c8ta09587f

  • 革新的な芳香族系電解質膜の開発 Invited Major achievement

    9   24 - 28   2018.9

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    Authorship：Corresponding author   Language：Japanese   Publishing type：Research paper (scientific journal)  

  • Sulfonated Terpolymers Containing Alkylene and Perfluoroalkylene Groups: Effect of Aliphatic Groups on Membrane Properties and Interface with the Catalyst Layers Reviewed Major achievement

    J. Ahn, K. Miyatake

    ACS Appl. Energy Mater.   1   3965 - 3972   2018.8( ISSN：1944-8244 )

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：ACS  

    DOI： 10.1021/acsaem.8b00684

  • アルカリ形燃料電池の高性能化を目指したアニオン導電性薄膜の開発 Invited Major achievement

    宮武 健治

    分離技術   4   8 - 13   2018.8

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    Authorship：Lead author,　Last author,　Corresponding author   Language：Japanese   Publishing type：Research paper (scientific journal)  

  • PtNi Alloy Nanoparticles Prepared by Nanocapsule Method for ORR Catalysts in Alkaline Media Reviewed Major achievement

    K. Miyatake, Y. Shimizu

    BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN   91   1495 - 1497   2018.8( ISSN：0009-2673 )

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    Authorship：Lead author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Chemical Society of Japan  

    DOI： 10.1246/bcsj.20180175

  • Optimization of Pendant Chain Length in Partially Fluorinated Aromatic Anion Exchange Membranes for Alkaline Fuel Cells Reviewed Major achievement

    A. M. A. Mahmoud, K. Miyatake

    Journal of Materials Chemistry A   6   14400 - 14409   2018.7( ISSN：2050-7488 )

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：RSC  

    DOI： 10.1039/c8ta04310h

  • Structurally Well-Defined Anion Conductive Aromatic Copolymers: Effect of the Side-Chain Length Reviewed Major achievement

    R. Akiyama, N. Yokota, K. Otsuji, K. Miyatake

    MACROMOLECULES   51 ( 9 )   3394 - 3404   2018.6( ISSN：0024-9297 )

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    Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：ACS  

    For improving the alkaline stability and other properties of aromatic semiblock copolymer [QPE-bl-11a(C1)] membranes containing benzyltrimethylammonium groups, several novel hydrophilic monomers with different side-chain lengths and substitution positions were designed and synthesized for the polymerization. The pendant-type preaminated copolymers PE-bl-11s were quaternized using iodomethane to obtain the target QPE-bl-11s with well-defined chemical structure. In TEM analyses, QPE-bl-11a(C3) and QPE-bl-11a(C5) membranes with propyl and pentyl side-chains, respectively, showed more developed phase-separated morphology with greater hydrophilic domains (ca. 10-20 nm in width) than that of the C1 equivalent. The phase separation was more distinct and larger for the QPE-bl-11a membranes linked with p-phenylene groups in the hydrophilic part than for the QPE-bl-11b membranes with m-phenylene groups. In particular, QPE-bl-11b(C5) membrane exhibited considerably smaller hydrophilic/hydrophobic domains compared to those of the other membranes. After the alkaline stability test in 1 M KOH aqueous solution at 60 °C for 1000 h, the remaining conductivity was better as increasing the side-chain length: 34% for QPE-bl-11a(C1), 54% for QPE-bl-11a(C3), and 72% for QPE-bl-11a(C5) at 60 °C. The results suggest that the pendant alkyl chains could improve the alkaline stability and the main-chain bond position could improve morphology, water utilization, and mechanical properties of QPE-bl-11 membranes. An H2/O2 fuel cell with QPE-bl-11 membrane showed 139 mW cm-2 of the maximum power density at 0.28 A cm-2 of the current density.

    DOI： 10.1021/acs.macromol.8b00284

    Scopus

  • Remarkable Reinforcement Effect in Sulfonated Aromatic Polymers as Fuel Cell Membrane Reviewed Major achievement

    J. Miyake, M. Kusakabe, A. Tsutsumida, K. Miyatake

    ACS Appl. Energy Mater.   1   1233 - 1238   2018.3

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    DOI： 10.1021/acsaem.7b00349

  • Sulfonated Phenylene/Quinquephenylene/Perfluoroalkylene Terpolymers as Proton Exchange Membranes for Fuel Cells Reviewed Major achievement

    Y. Zhang, J. Miyake, R. Akiyama, R. Shimizu, K. Miyatake

    ACS Appl. Energy Mater.   1   1008 - 1015   2018.3

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    Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1021/acsaem.7b00162

  • 次世代燃料電池用の電解質膜の課題と可能性 Major achievement

    三宅純平, 宮武健治

    ELECTROCHEMISTRY   86   2018.3( ISSN：1344-3542 )

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    Authorship：Corresponding author   Language：Japanese   Publishing type：Research paper (scientific journal)  

  • Mechanism of H2O2 Decomposition by Tripehnylphosphine Oxide Reviewed Major achievement

    T. Tsuneda, J. Miyake, K. Miyatake

    ACS Omega   3 ( 1 )   259 - 265   2018.2( ISSN：2470-1343 )

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    Authorship：Last author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：American Chemical Society  

    A decomposition mechanism of H2O2 by triphenylphosphine oxide (TPPO) is presented. TPPO is often incorporated in proton-exchange membrane electrolytes as a moiety to inhibit the H2O2-induced degradation of the membranes. However, it has not been revealed how TPPO decreases the concentration of free H2O2 in the membranes. Following the experimental X-ray structures, the TPPO dimer capturing two H2O2 molecules was used as the calculation model. The vibrational spectrum calculations for various hydration numbers show that this model correctly reproduces the spectral peaks of TPPO capturing H2O2. On the basis of this model, the H2O2 decomposition mechanism by the TPPO dimer was searched. It was consequently found that this reaction proceeds through three steps: (1) Hydrogen transfer from H2O2 to the P=O bond of TPPO, (2) Hydrogen transfer from the -OOH group to the -OH group, and (3) O-O bond formation between O2 groups. The calculated vibrational spectra for the reactants and intermediates indicated that the first and second steps are activated by vibrational excitations. Moreover, the third step giving low barrier heights is considered to proceed through two reaction paths: directly producing the O2 molecule or going through an HOOOH intermediate. Interestingly, this reaction mechanism was found to use the violation of the octet rule for the P=O double bond, resulting in the strong H2O2 binding of TPPO.

    DOI： 10.1021/acsomega.7b01416

    Scopus

  • Versatile Synthesis of Sulfonated Aromatic Copolymers Using NiBr2 Reviewed Major achievement

    I. Hosaka, M. Kusakabe, K. Miyatake

    CHEMISTRY LETTERS   47 ( 2 )   257 - 259   2018.2( ISSN：0366-7022 )

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    Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Chemical Society of Japan  

    In this research, copolymerization reaction of sulfonated dichlorobenzene and dichloro-Terminated aromatic oligomer was investigated for the preparation of sulfonated copolymers as proton conductive membranes. We found that a versatile synthetic method without using costly Ni(0) catalyst, where NiBr2 could be reduced to Ni(0) with Zn in situ during the copolymerization reaction, was applicable. The resulting copolymer had comparable molecular weight and proton conductivity to those of the copolymers prepared by the previous method using Ni(0).

    DOI： 10.1246/cl.171071

    Scopus

  • Phase Separation and Ion Conductivity in the Bulk and at the Surface of Anion Exchange Membranes with Different Ion Exchange Capacities at Different Humidities Reviewed Major achievement

    T. Kimura, R. Akiyama, K. Miyatake, J. Inukai

    JOURNAL OF POWER SOURCES   375   397 - 403   2018.1( ISSN：0378-7753 )

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    Authorship：Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier B.V.  

    For higher performances of anion exchange membrane (AEM) fuel cells, understanding the phase-separated structures inside AEMs is essential, as well as those at the catalyst layer/membrane interfaces. The AEMs based on quaternized aromatic semi-block copolymers with different ion exchange capacities (IECs) were systematically investigated. With IECs of 1.23 and 1.95 mequiv g−1, the water uptakes at room temperature were 37% and 98%, and the anion conductivities 23.6 and 71.4 mS cm−1, respectively. The increases were not proportional to the IEC. Images obtained by transmission electron microscopy in vacuum were similar with both IEC values, but the development of a clear phase separation in humidified nitrogen was observed in the profiles only with 1.95 mequiv g−1obtained by small-angle X-ray scattering. At the temperature of 40 °C and the relative humidity (RH) of 30%, the average currents observed at the tip apex by current-sensing atomic force microscopy were &lt
    0.5 and 10 pA with 1.23 and 1.95 mequiv g−1, respectively, and those at 70% RH were 10 and 15 pA, respectively. The humidity gave a larger influence on the bulk structure with 1.95 mequiv g−1, whereas a larger influence on the surface conductivity with 1.23 mequiv g−1.

    DOI： 10.1016/j.jpowsour.2017.06.081

    Scopus

  • Robust Anion Conductive Polymers Containing Perfluoroalkylene and Pendant Ammonium Groups for High Performance Fuel Cells Reviewed Major achievement

    H. Ono, T. Kimura, A. Takano, K. Asazawa, J. Miyake, J. Inukai, K. Miyatake

    Journal of Materials Chemistry A   5 ( 47 )   24804 - 24812   2017.12( ISSN：2050-7488  eISSN：2050-7496 )

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    Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：ROYAL SOC CHEMISTRY  

    A novel series of ammonium-containing copolymers (QPAF-4) were designed and synthesized as anion exchange membranes for alkaline fuel cell applications. The copolymers were prepared via a nickel promoted polycondensation reaction with high molecular weights (M-w = 72.7-276.4 kDa as precursors) and were composed of perfluoroalkylene and fluorenyl groups with pendant ammonium groups. The QPAF-4 membrane with optimized copolymer composition and ion exchange capacity exhibited high hydroxide ion conductivity (86.2 mS cm(-1) in water at 80 degrees C) and excellent mechanical properties (large elongation at break = 269%). A severe alkaline stability test of the QPAF-4 membranes in 1 M KOH at 80 degrees C for 1000 h and the post-test analyses of the H-1 NMR spectra, solubility, and mechanical properties revealed minor, or no, changes in the chemical structure and properties. Alkaline fuel cells using the QPAF-4 membrane were operated using hydrazine as a fuel and oxygen or air as oxidant to achieve the high maximum power density of 515 mW cm(-2). The durability of the membrane was also confirmed in the operating fuel cell at a constant current density for longer than 1000 h.

    DOI： 10.1039/c7ta09409d

    Web of Science

  • Design of Flexible Polyphenylene Proton-Conducting Membrane for Next-Generation Fuel Cells Reviewed Major achievement

    J. Miyake, R. Taki, T. Mochizuki, R. Shimizu, R. Akiyama, M. Uchida, K. Miyatake

    Science Advances   3 ( 10 )   eaao0476   2017.10( ISSN：2375-2548 )

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    Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：AMER ASSOC ADVANCEMENT SCIENCE  

    Proton exchange membrane fuel cells (PEMFCs) are promising devices for clean power generation in automotive, stationary, and portable applications. Perfluorosulfonic acid (PFSA) ionomers (for example, Nafion) have been the benchmark PEMs; however, several problems, including high gas permeability, low thermal stability, high production cost, and environmental incompatibility, limit thewidespread dissemination of PEMFCs. It is believed that fluorine-free PEMs can potentially address all of these issues; however, none of these membranes have simultaneously met the criteria for both high performance (for example, proton conductivity) and durability (for example, mechanical and chemical stability). We present a polyphenylene-based PEM (SPP-QP) that fulfills the required properties for fuel cell applications. The newly designed PEM exhibits very high proton conductivity, excellent membrane flexibility, low gas permeability, and extremely high stability, with negligible degradation even under accelerated degradation conditions, which has never been achieved with existing fluorine-free PEMs. The polyphenylene PEM also exhibits reasonably high fuel cell performance, with excellent durability under practical conditions. This new PEM extends the limits of existing fluorine-free proton-conductive materials and will help to realize the next generation of PEMFCs via cost reduction as well as the performance improvement compared to the present PFSA-based PEMFC systems.

    DOI： 10.1126/sciadv.aao0476

    Web of Science

  • Durability and Degradation Analysis of Hydrocarbon Ionomer Membranes in Polymer Electrolyte Fuel Cells Accelerated Stress Evaluation Reviewed Major achievement

    R. Shimizu, J. Tsuji, N. Sato, J. Takano, S. Itami, M. Kusakabe, K. Miyatake, A. Iiyama, M. Uchida

    JOURNAL OF POWER SOURCES   367   63 - 71   2017.9( ISSN：0378-7753  eISSN：1873-2755 )

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：ELSEVIER SCIENCE BV  

    The chemical durabilities of two proton-conducting hydrocarbon polymer electrolyte membranes, sulfonated benzophenone poly(arylene ether ketone) (SPK) semiblocic copolymer and sulfonated phenylene poly(arylene ether ketone) (SPP) semiblocic copolymer are evaluated under accelerated open circuit voltage (OCV) conditions in a polymer electrolyte fuel cell (PEFC). Post-test characterization of the membrane electrodes assemblies (MEAs) is carried out via gel permeation chromatography (GPC) and nuclear magnetic resonance (NMR) spectroscopy. These results are compared with those of the initial MEAs. The SPP cell shows the highest OCV at 1000 h, and, in the post-test analysis, the SPP membrane retains up to 80% of the original molecular weight, based on the GPC results, and 90% of the hydrophilic structure, based on the NMR results. The hydrophilic structure of the SPP membrane is more stable after the durability evaluation than that of the SPK. From these results, the SPP membrane, with its simple hydrophilic structure, which does not include ketone groups, is seen to be significantly more resistant to radical attack. This structure leads to high chemical durability and thus impedes the chemical decomposition of the membrane. (C) 2017 The Author(s). Published by Elsevier B.V.

    DOI： 10.1016/j.jpowsour.2017.09.025

    Web of Science

  • Durability of Sulfonated Phenylene Poly(arylene ether ketone) Semiblock Copolymer Membrane in Wet-dry Cycling for PEFCs Reviewed Major achievement

    H. Ishikawa, Y. Fujita, J. Tsuji, M. Kusakabe, J. Miyake, Y. Sugawara, K. Miyatake, M. Uchida

    JOURNAL OF THE ELECTROCHEMICAL SOCIETY   164 ( 12 )   F1204 - F1210   2017.8( ISSN：0013-4651  eISSN：1945-7111 )

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：ELECTROCHEMICAL SOC INC  

    The mechanical durability of sulfonated poly (phenylene) (SPP) membrane, used for polymer electrolyte fuel cells (PEFCs), is evaluated by the United States Department of Energy (USDOE) stress protocol involving wet-dry cycling, and the degradation is analyzed specifically by comparing with sulfonated poly(arylene ether ketone) (SPK) membrane. Initially, the SPP membrane exhibits 2-fold higher stiffness and 50% lower dimensional change ratio than the SPK membrane. In durability cycling, the SPP membrane lasts more than 20,000 wet-dry cycles without mechanical failure, which is more than 5-fold better durability than that for the SPK membrane. Higher mechanical strength and lower dimensional change can reduce both irreversible membrane deformation and mechanical stress attributed to the membrane swelling and shrinking. In post-test analyses, the SPP membrane is found to rupture in the peripheral region of the membrane electrode assemblies. The SPP membrane maintains only 10% of the elongation at break in the peripheral region but 50% in the electrode region, compared with the pristine condition. It is most likely that the membrane deteriorates in the peripheral region due to stress concentration by cell compression and membrane deformation during wet-dry cycling. (185 words) (C) The Author(s) 2017. Published by ECS. All rights reserved.

    DOI： 10.1149/2.1471712jes

    Web of Science

  • Theoretical Investigation of the H2O2-Induced Degradation Mechanism of Hydrated Nafion Membrane via Ether-Linkage Dissociation Reviewed Major achievement

    T. Tsuneda, R. K. Singh, A. Iiyama, K. Miyatake

    ACS Omega   2   4053 - 4064   2017.8( ISSN：2161-1653 )

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    Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1021/acsomega.7b00594

  • Copolymers Composed of Perfluoroalkyl and Ammonium-functionalized Fluorenyl Groups as Chemically Stable Anion Exchange Membranes Reviewed Major achievement

    M. Ozawa, T. Kimura, R. Akiyama, J. Miyake, J. Inukai, K. Miyatake

    BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN   90 ( 10 )   1088 - 1094   2017.7( ISSN：0009-2673  eISSN：1348-0634 )

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    Authorship：Last author,　Corresponding author   Language：English   Publishing type：Research paper (scientific journal)   Publisher：CHEMICAL SOC JAPAN  

    We report synthesis and properties of a novel series of ammonium-functionalized perfluoroalkylene/aromatic copolymers. In particular, the effect of number and position of ammonium groups on the properties of the copolymer thin membranes was investigated. Fluorenylidene biphenylene groups were used as a scaffold for the ammonium groups. By controlling the chloromethylation reaction conditions, the ammonium groups could be introduced up to 4.0 per fluorenylidene biphenylene unit, resulting in the ion exchange capacity (IEC) of the resulting copolymers ranging from 1.0 to 1.8 meq g(-1). The copolymers provided bendable and transparent membranes by solution casting. The membranes exhibited phase-separated morphology based on the hydrophilic/hydrophobic differences in the copolymer components. A copolymer membrane with IEC = 1.0 meq g(-1) showed high hydroxide ion conductivity (ca. 70mS cm(-1)) at 80 degrees C in water and good alkaline stability in 1M KOH aq. over 1000 h at 60 degrees C. The membrane showed only minor degradation after the long-term alkaline stability test.

    DOI： 10.1246/bcsj.20170185

    Web of Science

  • High Hydroxide Ion Conductivity with Enhanced Alkaline Stability of Partially Fluorinated and Quaternized Aromatic Copolymers as Anion Exchange Membranes Reviewed Major achievement

    Ahmed Mohamed Ahmed Mahmoud, Ahmed Mohamed Mohamed Elsaghier, Kanji Otsuji, and Kenji Miyatake

    MACROMOLECULES   50 ( 11 )   4256 - 4266   2017.6( ISSN：0024-9297  eISSN：1520-5835 )

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    For enhancing hydroxide ion conductivity, alkaline stability, and fuel cell performance of quaternaized aromatic/perfluoroaklyl copolymer (QPAF) membranes, ammonium groups attached to the polymer backbone have been investigated. The ammonium groups included dimethyl-butylamine (DMBA), dimethylhexylamine (DMHA), and 1,2dimethylimidazole (DMIm) groups in comparison to the trimethylammonium (TMA) group. DMBA turned to be the optimum ammonium group for QPAF membranes in terms of its high hydroxide ion conductivity based on well-connected and larger phase-separated morphology than that of QPAF-TMA with similar ion exchange capacity (IEC) value. QPAF-DMBA (IEC = 1.33 mequiv g(-1)) exhibited the highest hydroxide ion conductivity among the tested membranes up to 152 mS cm(-2) in water at 80 degrees C, which was 1.6 times higher than that of QPAFTMA (95 mS cm(-1)). In addition, QPAF-DMBA exhibited reasonable alkaline stability in 1 M KOH at 60 degrees C for 1000 h. The remaining conductivity was 44 mS cm(-1) (58%) for QPAF-DMBA, while that for QPAF-TMA was 1.0 mS cm(-1) (1%). QPAFDMBA (IEC = 1.09 mequiv g(-1)) exhibited excellent stability in 1 M KOH at 80 degrees C without change in the ion conductivity (22 mS cm(-1)) for 500 h. The post-test membranes exhibited a minor degradation in QPAF-DMBA as suggested by FT-IR spectra and DMA analyses. An H-2/O-2 fuel cell was operated with the QPAF-DMBA membrane to achieve the maximum power density of 167 mW cm(-2) at the current density of 0.42 A cm(-2), which was higher than that (138 mW cm(-2)) for QPAF-TMA membrane under the same operating conditions.

    DOI： 10.1021/acs.macromol.7b00401

    Web of Science

  • Fluorine-free Sulfonated Aromatic Polymers as Proton Exchange Membranes Reviewed Major achievement

    J. Miyake, K. Miyatake

    POLYMER JOURNAL   49 ( 6 )   487 - 495   2017.6( ISSN：0032-3896  eISSN：1349-0540 )

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：NATURE PUBLISHING GROUP  

    The recent progress of our research on proton exchange membranes (PEMs) for fuel cell applications is reviewed. In particular, we focus on fluorine-free sulfonated aromatic polymers as alternatives to the benchmark perfluorosulfonic acid ionomer (e.g., Nafion) PEMs. Most fluorine-free sulfonated aromatic polymers require improved proton conductivity (at high temperatures and low humidity) and chemical and mechanical stability. To address these issues, a wide range of molecular structures and their sequences were investigated. First, the effect of molecular structure on the membrane properties of sulfonated multiblock copoly(arylene ether)s is discussed. We emphasize that phosphine oxide moieties might improve chemical stability; however, aromatic ether linkages in the hydrophilic block are not suitable because oxidative degradation and excess water swelling followed by mechanical failure is essentially inevitable. We then developed a novel polymer synthetic method, an intrapolymer Heck reaction, to ladderize aromatic ether linkages in the hydrophilic block. The ladderized rigid hydrophilic structure is an effective molecular design for balancing proton conductivity and mechanical stability. We then discuss two types of segmented copolymers based on the rigid hydrophilic structural design via a Ni-mediated coupling reaction; the hydrophilic structures are sulfonated phenylene and sulfonated benzophenone. We found that the traditional multiblock structure as well as any additional polar groups (e.g., ether, sulfone, ketone) in the hydrophilic sections are not necessary for improving the membrane properties that are important for fuel cell applications, such as proton conductivity and chemical and mechanical stability. The results indicate that fluorine-free aromatic PEMs are a potentially applicable class of ionomers for the next generation of proton exchange membrane fuel cells.

    DOI： 10.1038/pj.2017.11

    Web of Science

  • Pt/Co Alloy Nanoparticles Prepared by Nanocapsule Method Exhibit a High Oxygen Reduction Reaction Activity in Alkaline Media Reviewed Major achievement

    K. Miyatake, Y. Shimizu

    ACS Omega   2   2085 - 2089   2017.5( ISSN：2161-1653 )

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    DOI： 10.1021/acsomega.7b00415

  • Partially Fluorinated and Ammonium-Functionalized Terpolymers: Effect of Aliphatic Groups on the Properties of Anion Conductive Membranes Reviewed Major achievement

    Hideaki Ono, Junpei Miyake, Kenji Miyatake

    JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY   55 ( 8 )   1442 - 1450   2017.3( ISSN：0887-624X  eISSN：1099-0518 )

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    Synthesis and properties of a series of ammonium-containing terpolymers (QPAF-3) as anion conductive membranes are reported. The QPAF-3s composed of perfluoroalkylene, alkylene, and ammonium-functionalized phenylene groups without heteroatom linkages in the main chain were synthesized via nickel-mediated polycondensation reaction, followed by chloromethylation, quaternization, and ion exchange reactions. Self-standing, bendable membranes were obtained by solution casting. The QPAF-3 membrane with optimized terpolymer composition and ion exchange capacity (1.46 meq g(-1)) showed high hydroxide ion conductivity (123 mS cm(-1) in water at 80 degrees C). The alkaline stability test in 1 M KOH for 1000 h at 80 degrees C and the posttest analysis with IR spectra and tensile strength suggested that ammoniumgroups were likely to be decomposed while the polymer main chain was chemically more robust. The presence of the alkylene groups in the terpolymers lowered solubility, glass transition temperature, and elongation property of the resulting membranes. (C) 2017 Wiley Periodicals, Inc.

    DOI： 10.1002/pola.28513

    Web of Science

  • Anion Conductive Polymers Containing Aliphatic and Ammonium-functionalized Fluorene Groups Reviewed Major achievement

    Manai Shimada, Ryo Akiyama, Hideaki Ono, Junpei Miyake, Kenji Miyatake

    CHEMISTRY LETTERS   46 ( 3 )   374 - 377   2017.3( ISSN：0366-7022  eISSN：1348-0715 )

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    A novel series of anion conductive polymers, quaternized poly(phenylene alkylene)s (QPAs), were synthesized and characterized. Because of the unique main chain structure composed of alkylene and ammonium-functionalized fluorene groups, QPA thin membranes exhibited high ion conductivity and good chemical and mechanical stabilities.

    DOI： 10.1246/cl.161073

    Web of Science

  • Effect of Surface Ion Conductivity of Anion Exchange Membranes on Fuel-Cell Performance Reviewed Major achievement

    M. Hara,T. Kimura,T. Nakamura,M. Shimada,H. Ono,S. Shimada,K. Miyatake,M. Uchida,J. Inukai,M. Watanabe

    LANGMUIR   32 ( 37 )   9557 - 9565   2016.10( ISSN：0743-7463 )

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    Anion conductivity at the surfaces of two anion-exchange membranes (AEMs), quaternized ammonium poly(arylene ether) multiblock copolymer(QPE-bl-3) and quaternized ammonium poly(arylene perfluoro-alkylene) copolymer (QPAF-1), synthesized by our group was investigated using current-sensing atomic force microscopy under purified air at various relative humidities. The anion-conducting spots were distributed inhomogeneously on the surface Of QPE-bl-3, and the total areas of the anion-conducting spots and the current at each spot increased with humidity. The anion-conductive areas on QPAF-1 were found on the entire surface even at a low humidity. Distribution of the anion-conducting spots on the membrane was found to directly affect the performance of an AEM fuel cell.

    DOI： 10.1021/acs.langmuir.6b01747

    Web of Science

  • Experimental and Theoretical Infrared Spectroscopic Study on Hydrated Nafion Membrane Reviewed Major achievement

    MACROMOLECULES   49   6621 - 6629   2016.9( ISSN：0024-9297 )

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  • Effect of Thermal Crosslinking on the Properties of Sulfonated Poly(phenylene sulfone)s as Proton Conductive Membranes Reviewed Major achievement

    JOURNAL OF APPLIED POLYMER SCIENCE   133   44218   2016.8( ISSN：0021-8995 )

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  • Simple, Effective Molecular Strategy for the Design of Fuel Cell Membranes: Combination of Perfluoroalkyl and Sulfonated Phenylene Groups Reviewed Major achievement

    ACS Energy Lett.   1   348 - 352   2016.8

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  • Anion Conductive Aromatic Copolymers from Dimethylaminomethylated Monomers: Synthesis, Properties and Applications in Alkaline Fuel Cells Reviewed Major achievement

    MACROMOLECULES   49   4480 - 4489   2016.7( ISSN：0024-9297 )

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  • Use of a Sub-Gasket and Soft Gas Diffusion Layer to Mitigate Mechanical Degradation of a Hydrocarbon Membrane for Polymer Electrolyte Fuel Cells in Wet-Dry Cycling Reviewed Major achievement

    JOURNAL OF POWER SOURCES   325   35 - 41   2016.7( ISSN：0378-7753 )

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  • Anion Exchange Membranes Containing Fluorinated Poly(arylene ether)s: Properties and Application in Pt-free Hydrazine Fuel Cell Reviewed Major achievement

    CHEMISTRY LETTERS   45   664 - 666   2016.6( ISSN：0366-7022 )

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  • Effect of Ammonium Groups on the Properties of Anion Conductive Membranes Based on Partially Fluorinated Aromatic Polymers Reviewed Major achievement

    A. M. A. Mohmoud,A. M. M. Elsaghier,K. Miyatake

    RSC Advances   6   27862 - 27870   2016.4( ISSN：2046-2069 )

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  • Effect of Sulfonated Triphenylphosphine Oxide Groups in the Aromatic Block Copolymers as Proton Exchange Membrane Reviewed Major achievement

    Chem. Lett.   45 ( 1 )   33 - 35   2016.1

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  • Anion Conductive Aromatic Polymers Containing Fluorenyl Groups: Effect of the Position and Number of Ammonium Groups Reviewed Major achievement

    M. Shimada,S. Shimada,J. Miyake,M. Uchida,K. Miyatake

    JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY   54   935 - 944   2016.1( ISSN：0887-624X )

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    DOI： 10.1002/pola.27928

  • 次世代燃料電池自動車への貢献を目指した電解質膜の研究開発－NEDO HiPer-FCプロジェクトにおける新規炭化水素系電解質膜に関する取り組み Major achievement

    宮武 健治,内田 誠,渡辺 政廣

    自動車技術   11   72 - 77   2015.11

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  • Anion Exchange Membranes Composed of Perfluoroalkylene Chains and Ammonium-Functionalized Oligophenylenes Reviewed Major achievement

    J. Mater. Chem. A   3   21779 - 21788   2015.10

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  • Ladder-Type Aromatic Block Copolymers Containing Sulfonated Triphenylphosphine Oxide Moieties as Proton Conductive Membranes Reviewed Major achievement

    Polymer   77   152 - 155   2015.10

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  • Analysis of the Gold/Polymer Electrolyte Membrane Interface by Polarization Modulated ATR-FTIR Spectroscopy Reviewed Major achievement

    J. Phys. Chem. C   119   16754 - 16761   2015.8

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  • Effect of the Hydrophilic Component in Aromatic Ionomers: Simple Structure Provides Improved Properties as Fuel Cell Membranes Reviewed Major achievement

    ACS Macro Lett.   4   750 - 754   2015.7

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  • A Proton Conductive Aromatic Block Copolymer Containing Dibenzofuran Moieties Reviewed Major achievement

    Chem. Lett.   44 ( 7 )   964 - 966   2015.7

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  • Sulfonated Polybenzophenone/Polyimide Copolymer as a Novel Proton Exchange Membrane Reviewed Major achievement

    RSC Advances   5   50082 - 50086   2015.6

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  • Effects of SiO2 Nanoparticles Incorporated into Poly(arylene ether sulfone ketone) Multiblock Copolymer Electrolyte Membranes on Fuel Cell Performance at Low Humidity Reviewed Major achievement

    Electrochemistry   83   150 - 154   2015.3

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  • Synthesis and Properties of Sulfonated and Brominated Poly(arylene ether)s as Proton Conductive Membranes Reviewed Major achievement

    Bull. Chem. Soc. Jpn.   88   183 - 191   2015.3

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  • Synthesis and Properties of Sulfonated Block Poly(arylene ether)s Containing m-Terphenyl Groups as Proton Conductive Membranes Reviewed Major achievement

    J. Membr. Sci.   476   156 - 161   2015.2

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  • Aromatic Copolymers Containing Ammonium-Functionalized Oligophenylene Moieties as Highly Anion Conductive Membranes Reviewed Major achievement

    Macromolecules   47   8238 - 8246   2014.12

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  • Carbon Segregation-Induced Highly Metallic Ni Nanoparticles for Electrocatalytic Oxidation of Hydrazine in Alkaline Media Reviewed Major achievement

    ACS Appl. Mater. Interfaces   6   18445 - 18449   2014.11

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  • Anion Conductive Aromatic Block Copolymers Containing Diphenyl Ether or Sulfide Groups for Application to Alkaline Fuel Cells Reviewed Major achievement

    ACS Appl. Mater. Interfaces   6   17044 - 17052   2014.10

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  • Ammonium-functionalized Poly(arylene ether)s as Anion Exchange Membranes Reviewed Major achievement

    Polym. J.   46   656 - 663   2014.10

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  • Effects of Hot Liquid-Water Treatment on Local Proton Conductivity at Surfaces of Sulfonated Poly(arylene ketone) Block Copolymer Membrane for Fuel Cells Studied by Current-Sensing Atomic Force Microscopy Reviewed Major achievement

    Electrochim. Acta   143   383 - 389   2014.9

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  • Double Layer Ionomer Membrane for Improving Fuel Cell Performance Reviewed Major achievement

    ACS Appl. Mater. Interfaces   6 ( 6 )   13894 - 13899   2014.8

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  • Effects of Incorporation of SiO2 Nanoparticles into Sulfonated Polyimide Electrolyte Membranes on Fuel Cell Performance under Low Humidity Conditions Reviewed Major achievement

    Electrochim. Acta   137   213 - 218   2014.7

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  • Theoretical Investigation of Local Proton Conductance in the Proton Exchange Membranes Reviewed Major achievement

    Chem. Phys. Lett.   608   11 - 16   2014.7

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  • 燃料電池への応用を目指した気体分離膜－プロトン導電性芳香族高分子膜の開発 Major achievement

    宮武 健治

    膜   39 ( 3 )   155 - 161   2014.5

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  • Proton Conductive Areas on Sulfonated Poly(arylene ketone) Multiblock Copolymer Electrolyte Membrane Studied by Current-Sensing Atomic Force Microscopy Reviewed Major achievement

    Electrochemistry   82 ( 5 )   369 - 375   2014.5

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  • Intrapolymer Heck Reaction for Proton Conductive Ladder-type Aromatic Block Copolymers Reviewed Major achievement

    RSC Advances   ( 4 )   21049 - 21053   2014.5

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  • Temperature- and Humidity-Controlled SAXS Analysis of Proton-Conductive Ionomer Membranes for Fuel Cells Reviewed Major achievement

    ChemSusChem   7 ( 3 )   729 - 733   2014.3

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  • Reversible/irreversible Increase in Proton-conductive Areas on Proton-exchange-membrane Surface by Applying Voltage Using Current-sensing Atomic Force Microscope Reviewed Major achievement

    J. Electroanal. Chem.   716   158 - 163   2014.3

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  • 燃料電池の高性能化を目指したイオン伝導膜の開発－芳香族高分子からのアプローチ－ Major achievement

    宮武健治

    現代化学   514 ( 1 )   48 - 52   2014.1

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  • Effect of Ammonium Groups on the Properties and Alkaline Stability of Poly(arylene ether)-Based Anion Exchange Membranes Reviewed Major achievement

    J. Polym. Sci., A: Polym. Chem.   52 ( 3 )   383 - 389   2014.1

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  • Proton Conductive Aromatic Block Copolymers from A New Bistriazole Monomer Reviewed Major achievement

    RSC Advances   3   20202 - 20208   2013.10

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  • Sulfonated Poly(arylene ether phosphine oxide ketone) Block Copolymers as Oxidatively Stable Proton Conductive Membranes Reviewed Major achievement

    ACS Appl. Mater. Interfaces   5   5903 - 5907   2013.7

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  • Imaging Individual Proton-Conducting Spots on Sulfonated Multiblock-Copolymer Membrane under Controlled Hydrogen Atmosphere by Current-Sensing Atomic Force Microscopy Reviewed Major achievement

    J. Phys. Chem. B   117   3892 - 3899   2013.5

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  • Synthesis and Properties of Partially Fluorinated Poly(arylene ether) Block Copolymers Containing Ammonium Groups as Anion Conductive Membranes Reviewed Major achievement

    Bull. Chem. Soc. Jpn.   86 ( 5 )   663 - 670   2013.5

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  • ATR-FTIR Analysis of the State of Water in a Sulfonated Block Poly(arylene ether sulfone ketone) Membrane and Proton Conductivity Measurement during the Hydration/Dehydration Cycle Reviewed Major achievement

    J. Phys. Chem. C   117 ( 8 )   3762 - 3771   2013.2

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  • Effect of Platinum Loading on Fuel Cell Cathode Performance Using Hydrocarbon Ionomers as Binder Reviewed Major achievement

    Phys. Chem. Chem. Phys.   14   16713 - 16718   2012.12

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  • 次世代燃料電池を目指した高分子電解質膜の最近の進展 Major achievement

    宮武 健治,渡辺 政廣

    未来材料   12 ( 11 )   35 - 40   2012.11

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  • Durability of an Aromatic Block Copolymer Membrane in Practical PEFC Operation Reviewed Major achievement

    Electrochem. Commun.   24   47 - 49   2012.9

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  • Micro-Raman Study on Water Distribution inside a Na&#64257;on Membrane during Operation of Polymer Electrolyte Fuel Cell Reviewed Major achievement

    Electrochim. Acta   82   277 - 283   2012.9

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  • Block Poly(arylene ether sulfone ketone)s Containing Densely Sulfonated Linear Hydrophilic Segments as Proton Conductive Membranes Reviewed Major achievement

    Polym. Chem.   3   2517 - 2522   2012.8

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  • Complete NMR Assignment of A Sulfonated Aromatic Block Copolymer via Heteronuclear Single-quantum Correlation, Heteronuclear Multiple-bond Correlation and Heteronuclear Single-quantum Correlation Total Correlation Spectroscopy Reviewed Major achievement

    M. Takasaki,K. Kimura,Y. Nakagawa,N. Sato,B. Bae,K. Miyatake,M. Watanabe

    POLYMER JOURNAL   44   845 - 849   2012.8( ISSN：0032-3896 )

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  • Sulfonated Polybenzophenone/Poly(arylene ether) Block Copolymer Membranes for Fuel Cell Applications Reviewed Major achievement

    ACS Appl. Mater. Interfaces   4   2881 - 2884   2012.6

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  • Synthesis of Superacid-Modified Poly(arylene ether sulfone)s via Post-Bromination Reviewed Major achievement

    RSC Advances   2   5199 - 5204   2012.6

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  • Synthesis and Properties of Sulfonated Poly(arylene ether) Block Copolymers as Proton Conductive Membranes Reviewed Major achievement

    Bull. Chem. Soc. Jpn.   85   389 - 396   2012.3

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  • Preparation and Fuel Cell Performance of Catalyst Layers Using Sulfonated Polyimide Ionomers Reviewed Major achievement

    ACS Appl. Mater. Interfaces   4   730 - 737   2012.2

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  • Durability of Sulfonated Polyimide Membrane in Humidity Cycling for Fuel Cell Applications Reviewed Major achievement

    J. Power Sources   204   74 - 78   2012.1

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  • Effect of PEFC Operating Conditions on the Durability of Sulfonated Polyimide Membranes Reviewed Major achievement

    Electrochim. Acta   58   589 - 598   2011.12

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  • Temperature Dependence of the Water Distribution inside a Nafion Membrane in an Operating PEFC. A Micro-Raman Study Reviewed Major achievement

    Electrochim. Acta   58   449 - 455   2011.12

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  • Effect of PEFC Operating Conditions on the Durability of Sulfonated Poly(arylene ether sulfone ketone) Multiblock Membranes Reviewed Major achievement

    Electrochim. Acta   56   8989 - 8996   2011.10

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  • Fluorene-Containing Cardo Polymers as Ion Conductive Membranes for Fuel Cells Reviewed Major achievement

    Polym. Chem.   2   1919 - 1929   2011.9

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  • Sulfonated Poly(arylene ether sulfone ketone) Multiblock Copolymers with Highly Sulfonated Blocks. Long-Term Fuel Cell Operation and Post-Test Analyses Reviewed Major achievement

    ACS Appl. Mater. Interfaces   3   2786 - 2793   2011.8

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  • Polyimide Ionomer Containing Superacid Groups Reviewed Major achievement

    Polym. Adv. Tech.   22   1305 - 1310   2011.8

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  • Synthesis and Properties of Sulfonated Poly(arylene ether)s Containing Azole Groups Reviewed Major achievement

    J. Polym. Sci. A: Polym. Chem.   49   3863 - 3873   2011.8

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  • Anion Conductive Block Poly(arylene ether)s: Synthesis, Properties, and Application in Alkaline Fuel Cells Reviewed Major achievement

    J. Am. Chem. Soc.   133   10646 - 10654   2011.7

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  • Polybenzimidazole Block Sulfonated Poly(arylene ether sulfone) Ionomers Reviewed Major achievement

    Chem. Commun.   8895 - 8897   2011.7

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  • Sulfonated Block Poly(arylene ether sulfone) Membranes for Fuel Cell Applications via Oligomeric Sulfonation Reviewed Major achievement

    Macromolecules   44   3884 - 3892   2011.5

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  • ATR-FTIR Study of Water in Nafion Membrane Combined with Proton Conductivity Measurements during Hydration/dehydration Cycle Reviewed Major achievement

    J. Phys. Chem. B   115   4315 - 4321   2011.4

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  • Luminescent Sensory Polymer Coating Composed of Platinumporphyrin and Poly(trimethylsilylpropyne) for Real-Time Oxygen Visualization in Operating PEFCs Reviewed Major achievement

    T. Hyakutake,Y. Ishigami,J. Kato,J. Inukai,K. Miyatake,H. Nishide,M. Watanabe

    Macromol. Chem. Phys.   212   2011.2

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  • Synthesis and Properties of Multiblock Copoly(arylene ether)s Containing Superacid Groups for Fuel Cell Membranes Reviewed Major achievement

    T. Mikami,K. Miyatake,M. Watanabe

    J. Polym. Sci. A: Polym. Chem.   49   452 - 464   2011.1

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  • Synthesis and Properties of Anion Conductive Ionomers Containing Fluorenyl Groups for Alkaline Fuel Cell Applications Reviewed Major achievement

    M. Tanaka,M. Koike,K. Miyatake,M. Watanabe

    Polym. Chem.   2 ( 1 )   99 - 106   2011.1

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  • Rechargeable Proton Exchange Membrane Fuel Cell Containing an Intrinsic Hydrogen Storage Polymer Reviewed Major achievement

    J. Miyake, Y. Ogawa, T. Tanaka, J. Ahn, K. Oka, K. Oyaizu, K. Miyatake

    Comm. Chem.   3   138   2010.10

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    DOI： 10.1038/s42004-020-00384-z

  • Rechargeable Proton Exchange Membrane Fuel Cell Containing an Intrinsic Hydrogen Storage Polymer Reviewed Major achievement

    J. Miyake, Y. Ogawa, T. Tanaka, J. Ahn, K. Oka, K. Oyaizu, K. Miyatake

    Comm. Chem.   3   138   2010.10

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    DOI： 10.1038/s42004-020-00384-z

  • Sulfonated Poly(arylene ether sulfone ketone) Multiblock Copolymers with Highly Sulfonated Block. Fuel Cell Performance Reviewed Major achievement

    Byungchan Bae,Takeshi Yoda,Kenji Miyatake,Makoto Uchida,Hiroyuki Uchida,Masahiro Watanabe

    J. Phys. Chem. B   114   10481 - 10487   2010.8

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  • Synthesis, Properties, and Fuel Cell Performance of Perfluorosulfonated Poly(arylene ether)s Reviewed Major achievement

    T. Shimura,K. Miyatake,M. Watanabe

    Bull. Chem. Soc. Jpn.   83 ( 8 )   960 - 968   2010.8

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  • Proton Conductive Polyimide Ionomer Membranes: Effect of NH, OH, and COOH Groups Reviewed Major achievement

    J. Saito,M. Tanaka,K. Miyatake,M. Watanabe

    J. Polym. Sci. A: Polym. Chem.   48   2846 - 2854   2010.7

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  • Poly(arylene ether)s Containing Superacid Groups as Proton Exchange Membranes Reviewed Major achievement

    T. Mikami,K. Miyatake,M. Watanabe

    ACS Appl. Mater. Interfaces   2   2010.6

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  • Sulfonated Poly(arylene ether sulfone ketone) Multiblock Copolymers with Highly Sulfonated Block. Synthesis and Properties Reviewed Major achievement

    B. Bae,K. Miyatake,M. Watanabe

    Macromolecules   43   2684 - 2691   2010.3

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  • Anion Conductive Aromatic Ionomers Containing Fluorenyl Groups Reviewed Major achievement

    M. Tanaka,M. Koike,K. Miyatake,M. Watanabe

    Macromolecules   43   2657 - 2659   2010.3

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  • Proton-Conductive Aromatic Ionomers Containing Highly Sulfonated Blocks for High-Temperature-Operable Fuel Cells Reviewed Major achievement

    B. Bae,T. Yoda,K. Miyatake,H. Uchida,M. Watanabe

    Angew. Chem. Int. Ed.   49   317 - 320   2010.1

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  • Aromatic Ionomers with Superacid Groups Reviewed Major achievement

    K. Miyatake,T. Shimura,T. Mikami,M. Watanabe

    Chem. Commun.   6403 - 6405   2009.11

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  • Synthesis and Properties of Sulfonated Block Copolymers Having Fluorenyl Groups for Fuel Cell Applications Reviewed Major achievement

    B. Bae,K. Miyatake,M. Watanabe

    ACS Appl. Mater. Interfaces   1   1279 - 1286   2009.7

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  • Oxygen Reduction at the Pt/Carbon Black&#8211;Polyimide Ionomer Interface Reviewed Major achievement

    K. Miyatake,T. Omata,D. A. Tryk,H. Uchida,M. Watanabe

    J. Phys. Chem. C   113   7772 - 7778   2009.5

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  • Effect of the Hydrophobic Component on the Properties of Sulfonated Poly(arylene ether sulfone)s Reviewed Major achievement

    B. Bae,K. Miyatake,M. Watanabe

    Macromolecules   42   1873 - 1880   2009.3

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  • Diagnostic Analyses of Operating Fuel Cells through Direct Visualization of Oxygen Distribution Reviewed Major achievement

    J. Inukai,K. Miyatake,K. Takada,M. Watanabe,T. Hyakutake,H. Nishide,Y. Nagumo,M. Watanabe,M. Aoki,H. Takano

    Angew. Chem. Int. Ed.   47   2792 - 2795   2008.4

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  • Synthesis and Properties of Polyimide Ionomers Containing 1H-1,2,4-Triazole Groups Reviewed Major achievement

    J. Saito,K. Miyatake,M. Watanabe

    Macromolecules   41   2415 - 2420   2008.4

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    Language：English  

  • In-situ and Real-time Visualisation of Oxygen Distribution in DMFC Using A Porphyrin Dye Compound Reviewed Major achievement

    J. Inukai,K. Miyatake,Y. Ishigami,M. Watanabe,T. Hyakutake,H. Nishide,Y. Nagumo,M. Watanabe

    Chem. Commun.   1750 - 1752   2008.3

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    Language：English  

  • Sulfonated Poly(arylene ether sulfone) Ionomers Containing Fluorenyl Groups for Fuel Cell Applications Reviewed

    B. Bae,K. Miyatake,M. Watanabe

    J. Membr. Sci.   310   110 - 118   2008.1

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    Language：English  

  • Scientific Aspects of Polymer Electrolyte Fuel Cell Durability and Degradation Reviewed Major achievement

    R. Borup,J. Meyers,B. Pivovar,Y. S. Kim,R. Mukundan,N. Garland,D. Myers,M. Wilson,F. Garzon,D. Wood,P. Zelenay,K. More,K. Stroh,T. Zawodzinski,J. Boncella,J. E. McGrath,M. Inaba,K. Miyatake,M. Hori,K. Ota,Z. Ogumi,S. Miyata,A. Nishikata,Z. Siroma,Y. Uchimoto,K. Yasuda,K. Kimijima,N. Iwashita

    Chem. Rev.   107   3904 - 3951   2007.8

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    Language：English  

  • Enhanced Proton Conduction in Polymer Electrolyte Membranes with Acid Functionalized Polyilsesquioxane Reviewed Major achievement

    K. Miyatake,T. Tombe,Y. Chikashige,H. Uchida,M. Watanabe

    Angew. Chem. Int. Ed.   46   6646 - 6649   2007.6

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    Language：English  

  • Tuned Polymer Electrolyte Membranes Based on Aromatic Polyethers for Fuel Cell Applications Reviewed Major achievement

    K. Miyatake,Y. Chikashige,E. Higuchi,M. Watanabe

    J. Am. Chem. Soc.   129   3879 - 3887   2007.3

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    Language：English  

  • Aliphatic/Aromatic Polyimide Ionomers as a Proton Conductive Membrane for Fuel Cell Applications Reviewed Major achievement

    N. Asano,M. Aoki,S. Suzuki,K. Miyatake,H. Uchida,M. Watanabe

    J. Am. Chem. Soc.   128   1762 - 1769   2006.2

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    Language：English  

  • Poly(arylene ether) Ionomers Containing Sulfofluorenyl Groups for Fuel Cell Applications Reviewed Major achievement

    Y. Chikashige,Y. Chikyu,K. Miyatake,M. Watanabe

    Macromolecules   38   7121 - 7126   2005.7

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    Language：English  

  • Hydrolytically Stable Polyimide Ionomer for Fuel Cell Applications Reviewed Major achievement

    N. Asano,K. Miyatake,M. Watanabe

    Chem. Mater.   16   2841 - 2843   2004.7

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    Language：English  

  • Proton Conductive Polyimide Electrolytes Containing Trifluoromethyl Groups Reviewed Major achievement

    K. Miyatake,H. Zhou,T. Matsuo,H. Uchida,M. Watanabe

    Macromolecules   37   4961 - 4966   2004.6

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    Language：English  

  • Proton Conductive Polyimide Electrolytes Containing Fluorenyl Groups Reviewed Major achievement

    K. Miyatake,H. Zhou,M. Watanabe

    Macromolecules   4956 - 4960   2004.6

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    Language：English  

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Books and Other Publications

  • 燃料電池用材料 Major achievement

    宮武 健治、三宅 純平（ Role： Joint Work）

    2022.8 

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    Responsible for pages：210-211   Language：Japanese   Book type：Scholarly book

  • アルカリ形高分子電解質膜 Major achievement

    宮武 健治、三宅 純平（ Role： Joint Work）

    日本化学会  2022.7 

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    Responsible for pages：138-146   Language：Japanese   Book type：Scholarly book

  • 高速・局所移動水素、リチャージャブル燃料電池

    宮武健治（ Role： Joint Work）

    共立出版  2022.1 

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    Responsible for pages：9-15, 122-131   Language：Japanese   Book type：Scholarly book

  • 高速・局所移動水素、リチャージャブル燃料電池

    宮武健治（ Role： Joint Work）

    共立出版  2022.1 

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    Responsible for pages：9-15, 122-131   Language：Japanese   Book type：Scholarly book

  • Polymer Electrolyte Membranes: Design for Fuel Cells in Acidic Media Major achievement

    K. Miyatake（ Role： Single Work）

    Elsevier  2018.11 

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    Responsible for pages：295-307   Language：English  

  • Polymer Electrolyte Membranes: Design for Fuel Cells in Acidic Media

    K. Miyatake（ Role： Single Work）

    Elsevier  2018.11 

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    Responsible for pages：295-307   Language：English  

  • Membrane Electrolytes, from Perfluoro Sulfonic Acid (PFSA) to Hydrocarbon Ionomers Major achievement

    Springer  2012.10 

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    Responsible for pages：6538-6565   Language：English  

  • Alternative Hydrocarbon Membranes by Step GrowthB. Bae K. Miyatake M. Watanabe Major achievement

    Elsevier  2012.6 

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    Responsible for pages：621-650   Language：English  

  • Polyimide Ionomer Membranes for PEFCs and DMFCs Major achievement

    Wiley  2008.1 

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    Responsible for pages：114-117   Language：English  

  • 固体高分子形燃料電池用プロトン伝導膜 Major achievement

    宮武健治,渡辺政廣（-）

    産業技術サービスセンター  2004.9 

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    Total pages：803   Responsible for pages：517-520   Language：Japanese  

  • 燃料電池用プロトン伝導性ポリイミドの開発 Major achievement

    宮武健治,渡辺政廣（-）

    技術情報協会  2003.10 

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    Total pages：316   Responsible for pages：285-289   Language：Japanese  

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Presentations

  • 高プロトン導電性薄膜の創製とリチャージャブル燃料電池への挑戦 Invited

    宮武健治

    令和4年電気学会全国大会  2022.3 

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    Language：Japanese   Presentation type：Oral presentation(invited, special)  

  • アニオン交換膜の設計とアルカリ型エネルギーデバイスへの応用 Invited

    宮武健治

    FC EXPO2022  2022.3 

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    Language：Japanese   Presentation type：Oral presentation(invited, special)  

  • 新規高分子電解質膜の開発：耐久性向上のための設計指針 Invited

    宮武健治

    高分子学会2021東海シンポジウム  2022.1 

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    Language：Japanese   Presentation type：Oral presentation(invited, special)  

  • Partially Fluorinated Proton Conductuve Polyphenylene Ionomers for Fuel Cells Invited International conference

    K. Miyatake, Z. Long

    Materials Research Meeting 2021 (MRM2021)  2021.12 

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    Language：English   Presentation type：Oral presentation(invited, special)  

  • Polyphenylene ionomer membranes: effect of reinforcement Invited International conference

    K. Miyatake

    Solid State Proton Conductors (SSPC-20)  2021.9 

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    Language：English   Presentation type：Oral presentation(invited, special)  

  • Alkaline stable and highly conductive anion exchange membranes containing perfluoroalkyl groups Invited International conference

    K. Miyatake

    The 3rd Japan-China Clean Energy Forum-Hydrogen Energy and Carbon Capture  2021.9 

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    Language：English   Presentation type：Oral presentation(invited, special)  

  • Partially fluorinated anion exchange membranes for alkaline fuel cells and electrolyzers Invited International conference

    K. Miyatake, K. Otsuji, K. Kakainuma, M. Uchida

    European Electrolyzer & Fuel Cell Forum 2021  2021.6 

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    Language：English   Presentation type：Oral presentation(invited, special)  

  • Partially Fluorinated Anion Exchange Membranes for Alkaline Fuel Cells and Electrolyzers Invited International conference

    K. Miyatake, K. Otsuji, K. Kakainuma, M. Uchida

    Workshop on Ion Exchange Membrane for Energy Applications  2021.6 

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    Language：English   Presentation type：Oral presentation(invited, special)  

  • 炭化水素系電解質：今後何をすべきか、何ができるか Invited

    宮武健治

    20-1水素・燃料電池材料研究会  2021.1  高分子学会

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    Language：Japanese   Presentation type：Oral presentation(invited, special)  

  • Polyphenylene Ionomers: Design, Synthesis, and Properties Invited International conference

    K. Miyatake

    3rd G'L'owing Polymer Symposium in KANTO (GPS-K 2020)  2020.11  The Society of Polymer Science, Japan

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    Language：Japanese   Presentation type：Oral presentation(invited, special)  

  • Alkaline stable and highly conductive anion exchange membranes containing perfluoroalkyl groups" Invited International conference

    K. Miyatake

    The 2nd Japan-China Forum on Power Batteries for New Energy Vehicles  2020.10  JST

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    Language：English   Presentation type：Oral presentation(invited, special)  

  • 高分子膜の設計次第で燃料電池はどう変わる？ Invited

    宮武健治

    第10回日本化学会化学フェスタ2020  2020.10  日本化学会

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    Language：Japanese   Presentation type：Oral presentation(invited, special)  

  • Partially fluorinated anion exchange membranes for electrochemical applications Invited International conference

    K. Miyatake, T. Kimura, J. Inukai, M. Uchida

    Pacific Rim Meeting on Electrochemical and Solid-State Science 2020 (PRiME 2020),  2020.10  Electrochemical Society

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    Language：English   Presentation type：Oral presentation(invited, special)  

  • 高プロトン導電性高分子薄膜：分子設計とエネルギーデバイスへの応用 Invited

    Kenji Miyatake

    日本物理学会第75回年次大会  2020.3  日本物理学会

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    Language：Japanese   Presentation type：Oral presentation(invited, special)  

    Venue：名古屋大学  

  • Anion Exchange Membranes Containing Quinquephenylene Groups Invited International conference

    Kenji Miyatake

    Workshop on Ion Exchange Membrane for Energy Application  2019.6 

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    Language：English   Presentation type：Oral presentation(invited, special)  

    Venue：Bad Zwischenahn, Germany  

  • パネルディスカッション「エネルギー大変革時代を切り拓く博士人材」 Invited

    早稲田大学パワー・エネルギー・プロフェッショナル育成プログラム キックオフシンポジウム  2019.3 

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    Language：Japanese   Presentation type：Symposium workshop panel(nominated)  

  • 燃料電池の高性能化を目指したイオン伝導性薄膜の開発：山梨大学における産学官連携と大学院教育 Invited

    宮武 健治

    秋田大学新素材・機能性材料開発セミナー  2019.3 

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    Language：Japanese   Presentation type：Oral presentation(invited, special)  

  • イオン伝導性芳香族高分子の設計と燃料電池への応用 Invited

    宮武 健治

    高分子学会18-2有機エレクトロニクス研究会  2018.12  高分子学会有機エレクトロニクス研究会

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    Language：Japanese   Presentation type：Oral presentation(invited, special)  

    Venue：大阪  

  • Polyphenylene Ionomers as Fuel Cell Membranes Invited International conference

    K. Miyatake

    The 12th SPSJ International Polymer Conference  2018.12  SPSJ

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    Language：English   Presentation type：Oral presentation(invited, special)  

    Venue：Hirosima  

  • 次世代燃料電池を目指した高分子薄膜への挑戦 Invited

    宮武 健治

    第50回有機合成セミナー  2018.10 

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    Language：Japanese   Presentation type：Oral presentation(invited, special)  

  • Research and Development of Electrocatalysts and Polymer Electrolytes for Superlative, Stable, and Scalable Performance Fuel Cell Invited International conference

    A. Iiyama, K. Kakinuma, M. Uchida, J. Miyake, K. Miyatake, H. Yano, J. Inukai, H. Uchida

    International Fuel Cell Workshop 2018  2018.8 

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    Language：English   Presentation type：Oral presentation(invited, special)  

  • Partially Fluorinated Aromatic Anion Exchange Membranes: Effect of Ammonium Structure Invited International conference

    K. Miyatake

    Workshop on Ion Exchange Membrane for Energy Applications  2018.6 

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    Language：English   Presentation type：Oral presentation(invited, special)  

    Venue：Germany  

  • Development of Innovative Ion Conductive Membranes for Next Generation Fuel Cells Invited International conference

    K. Miyatake

    The 2nd International Symposium on Hydrogen Energy‒based Society  2017.11 

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    Language：English   Presentation type：Oral presentation(invited, special)  

  • エネルギーデバイスへの応用を指向した高性能イオン伝導性薄膜 Invited

    宮武健治

    第66回高分子討論会  2017.9 

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    Language：Japanese   Presentation type：Oral presentation(invited, special)  

  • Aromatic Polymer Based Anion Conductive Membranes for Alkaline Fuel Cells Invited International conference

    K. Miyatake

    IUPAC 17th International Symposium on Macromolecular Complexes  2017.8 

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    Language：English   Presentation type：Oral presentation(invited, special)  

  • Anion Exchange Membranes Composed of Perfluoroalkyl Main Chain and Pendant Ammonium Groups Invited International conference

    K. Miyatake

    Workshop on Ion Exchange Membrane for Energy Applications  2017.6 

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    Language：English   Presentation type：Oral presentation(invited, special)  

  • Anion Exchange Membranes Composed of Fluoroalkyl and Ammonium-Functionalized Fluorenyl groups: Effect of the Hydrophilic Component International conference

    M. Ozawa, J. Miyake, Miyatake

    The 11th SPSJ International Polymer Conference  2016.12 

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    Language：English   Presentation type：Oral presentation(general)  

    Venue：Fukuoka, Japan  

  • Sulfonated Aromatic Polymers Containing Phosphine Oxide Groups as Chemically Stable Proton Exchange Membranes International conference

    I. Hosaka, R. Akiiyama, J. Miyake, Miyatake

    The 11th SPSJ International Polymer Conference  2016.12 

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    Language：English   Presentation type：Oral presentation(general)  

    Venue：Fukuoka, Japan  

  • Molecular Consideration of Aromatic Proton Conducting Copolymers: Effect of Hydrophilic and Hydrophobic Components International conference

    R. Oida, R. Akiyama, J. Miyake, K. Miyatake

    The 11th SPSJ International Polymer Conference  2016.12 

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    Language：English   Presentation type：Oral presentation(general)  

    Venue：Fukuoka, Japan  

  • Chemically Stable Aromatic Ionomers as Proton Exchange Membranes International conference

    K. Miyatake, J. Miyake, R. Taki, R. Akiyama, R. Shimizu

    The 11th SPSJ International Polymer Conference  2016.12 

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    Language：English   Presentation type：Oral presentation(general)  

    Venue：Fukuoka, Japan  

  • 炭化水素系電解質膜を用いた固体高分子形燃料電池の加速耐久評価と劣化機構解析

    清水瞭, 辻淳一, 佐藤信之, 伊丹俊輔, 高野純, 日下部正人, 宮武健治, 飯山明裕, 内田誠

    第57回電池討論会  2016.11 

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    Language：Japanese   Presentation type：Oral presentation(general)  

    Venue：幕張メッセ国際会議場  

  • 中性子準弾性散乱による固体高分子電解質膜におけるプロトンダイナミクスの湿度依存性の解析

    岩井良樹, 茂木昌都, 松本匡史, 伊藤孝憲, 犬飼潤冶, 青木誠, 木村太郎, 宮武健治, 三宅純平, 富永大輝, 福嶋喜章, 柴田薫, 日下部正人, 今井英人

    第57回電池討論会  2016.11 

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    Language：Japanese   Presentation type：Oral presentation(general)  

    Venue：幕張メッセ国際会議場  

  • Aromatic Ionomers As Alternative Fuel Cell Membranes: Issues and Possibilities International conference

    K. Miyatake

    PRiME2016  2016.10 

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    Language：English   Presentation type：Oral presentation(general)  

    Venue：Hawaii, U.S.A  

  • Systematic Studies on the Phase Separations at Bulks and Surfaces of the Anion Exchange Membranes with Different Polymer Structures International conference

    T. Kimura, R. Akiyama, K. Miyatake, J. Inukai

    PRiME2016  2016.10 

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    Language：English   Presentation type：Oral presentation(general)  

    Venue：Hawaii, U.S.A  

  • Synthesis and Properties of Partially Fluorinated Anion Exchange Membranes Containing Ammonium-Functionalized Fluorenyl Groups International conference

    M. Ozawa, J. Miyake, K. Miyatake

    PRiME2016  2016.10 

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    Language：English   Presentation type：Oral presentation(general)  

    Venue：Hawaii, U.S.A  

  • Oxygen Reduction Reaction Activity and Durability of Platinum/Cobalt Alloy Nanoparticle Catalysts in Alkaline Media International conference

    Y. Shimizu, M. Uchida, K. Miyatake

    PRiME2016  2016.10 

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    Language：English   Presentation type：Oral presentation(general)  

    Venue：Hawaii, U.S.A  

  • Ionomer Layer Design of the Electrode Using PGM-Free Electrocatalysts for Anion Exchange Membrane Fuel Cells International conference

    K. Asazawa, A. Takano, E. Nishino, S. Yamagucha, J. Miyake, M. Uchida, K. Miyatake

    PRiME2016  2016.10 

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    Language：English   Presentation type：Oral presentation(general)  

    Venue：Hawaii, U.S.A  

  • Durability of Sulfonated Aromatic Copolymer Membranes in Accelerated Stress Evaluation International conference

    R. Shimizu, Y. Sakiyama, J. Tanaka, A. Itami, K. Miyatake, A. Iiyama, M. Uchida

    The 5th International Seminar for Special Doctoral Program‘Green Energy Conversion Science and Technology’  2016.8 

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    Language：English   Presentation type：Oral presentation(general)  

    Venue：Nagano, Japan  

  • Systematic Study on Structures and Ion Conductions at Bulks and Surfaces of Anion Exchange Membranes for Fuel Cells International conference

    T. Kimura, R. Akiyama, K. Miyatake, J. Inukai

    The 5th International Seminar for Special Doctoral Program‘Green Energy Conversion Science and Technology’  2016.8 

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    Language：English   Presentation type：Oral presentation(general)  

    Venue：Nagano, Japan  

  • Synthesis of Properties of Novel Anion Exchange Membranes Containig Flouoroalky1 and Ammonium-Functionalized-Functionalized Fluorenyl Groups International conference

    M. Ozawa, J. Miyake, K. Miyatake

    The 5th International Seminar for Special Doctoral Program‘Green Energy Conversion Science and Technology’  2016.8 

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    Language：English   Presentation type：Oral presentation(general)  

    Venue：Nagano, Japan  

  • Synthesis of an Aromatic Copolymer Membrane Having High Density Sulfonic Groups International conference

    A. Ozaki, J. Miyake, R. Akiyama, K. Miyatake

    The 5th International Seminar for Special Doctoral Program‘Green Energy Conversion Science and Technology’  2016.8 

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    Language：English   Presentation type：Oral presentation(general)  

    Venue：Nagano, Japan  

  • Synthesis and Properties of New Alkylene Containing Polymer Backbone for Anion Conductive Polymer International conference

    S. Shimada, R. Akiyama, H. Ono, J. Miyake, K. Miyatake

    The 5th International Seminar for Special Doctoral Program‘Green Energy Conversion Science and Technology’  2016.8 

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    Language：English   Presentation type：Oral presentation(general)  

    Venue：Nagano, Japan  

  • Synthesis and Characterization of Tricomponent Aromatic Copolymers as Proton Exchange Membranes International conference

    Y. Zhang, J. Miyake, R. Akiyama, K. Miyatake

    The 5th International Seminar for Special Doctoral Program‘Green Energy Conversion Science and Technology’  2016.8 

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    Language：English   Presentation type：Oral presentation(general)  

    Venue：Nagano, Japan  

  • Synthesis and Characterization of Sulfonated Aromatic Copolymers Containing Phosphine Oxide Groups as Chemically Stable Proton Exchange Membranes International conference

    I. Hosaka, R. Akiyama, J. Miyake, K. Miyatake

    The 5th International Seminar for Special Doctoral Program‘Green Energy Conversion Science and Technology’  2016.8 

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    Language：English   Presentation type：Oral presentation(general)  

    Venue：Nagano, Japan  

  • Stability of Perfluoroalkylene Based Anion Exchange Membranes for Alkaline Fuel Cell Applications : Impact of Varying Ammonium Structure International conference

    A. M. A. Mahmoud, K. Miyatake

    The 5th International Seminar for Special Doctoral Program‘Green Energy Conversion Science and Technology’  2016.8 

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    Language：English   Presentation type：Oral presentation(general)  

    Venue：Nagano, Japan  

  • Oxygen Reduction Reaction Activity and Durability of Platinum/Cobalt Alloy Nanoparticles for Orr in Alkaline Media International conference

    Y. Shimizu, K. Miyatake

    The 5th International Seminar for Special Doctoral Program‘Green Energy Conversion Science and Technology’  2016.8 

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    Language：English   Presentation type：Oral presentation(general)  

    Venue：Nagano, Japan  

  • Effect of Aliphatic Groups in the Anion Conductive Polymer Main Chains on the Alkaline Stability and Properties International conference

    H. Ono, J. Miyaka, K. Miyatake

    The 5th International Seminar for Special Doctoral Program‘Green Energy Conversion Science and Technology’  2016.8 

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    Language：English   Presentation type：Oral presentation(general)  

    Venue：Nagano, Japan  

  • Durability and Degradation Analysis of Novel Hydrocarbon Ionomer Membranes in PEFC Accelerated Stress Evaluation International conference

    R. Shimizu, Y. Sakiyama, J. Takano, S. Itami, M. Kusakabe, K. Miyatake, A. Iiyama, M. Uchida

    67th Annual Meeting of the International Society of Electrochemistry (ISE)  2016.8 

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    Language：English   Presentation type：Oral presentation(general)  

    Venue：The Hague, The Netherlands  

  • Anion Exchange Membranes Containing Perfluoroalkyl Groups International conference

    K. Miyatake, H. Ono, J. Miyatake

    Workshop on Ion Exchange Membranes for Energy Applications-EMEA2016  2016.6 

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    Language：English   Presentation type：Oral presentation(general)  

    Venue：Bad Zwischenahn. Germany  

  • フッ化アルキルとオリゴフェニレン骨格からなる新規アニオン交換膜の合成と物性

    小野英明, 三宅純平, 島田盛史, 内田誠, 宮武健治

    平成28年度繊維学会年次大会  2016.6 

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    Language：English   Presentation type：Oral presentation(general)  

    Venue：タワーホール船堀  

  • 親水部にオリゴフェニレン構造を有するアニオン導電性高分子の合成と物性評価

    横田尚樹, 秋山良, 三宅純平, 宮武健治

    第65回高分子学会年次大会  2016.5 

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    Language：Japanese   Presentation type：Oral presentation(general)  

    Venue：神戸国際会議場・展示場  

  • 新規アニオン交換膜を用いたダイレクトヒドラジン燃料電池

    西野英理子, 山田純子, 朝澤浩一郎, 横田尚樹, 秋山良, 三宅純平, 宮武健治

    第65回高分子学会年次大会  2016.5 

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    Language：Japanese   Presentation type：Oral presentation(general)  

    Venue：神戸国際会議場・展示場  

  • キンケフェニレン構造を有する芳香族系プロトン導電性高分子の合成と物性評価

    三宅純平, 滝隆之介, 秋山良, 望月崇史, 宮武健治

    第65回高分子学会年次大会  2016.5 

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    Language：Japanese   Presentation type：Oral presentation(general)  

    Venue：神戸国際会議場・展示場  

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Industrial Property Rights

  • ＣＯ２電解装置、およびＣＯ２電解生成物の製造方法

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    Application no：特願2021-084899  Date applied：2021.5

  • リバーシブル燃料電池

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    Application no：特願2021-84163  Date applied：2021.5

  • 陰イオン交換樹脂および電解質膜

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    Application no：PCT/JP2021/17255  Date applied：2021.4

Awards

  • BCSJ Award Article

    2022.5   CHemical Society of Japan   Sulfonated and Fluorinated Aromatic Terpolymers as Proton Conductive Membranes: Synthesis, Structure, and Properties

    Ren Kumao and Kenji Miyatake

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    Award type：Honored in official journal of a scientific society, scientific journal  Country：Japan

  • BCSJ Award Article

    2022.5   CHemical Society of Japan   Japan

    Ren Kumao, Kenji Miyatake

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    Award type：Honored in official journal of a scientific society, scientific journal  Country：Japan

  • FCDIC学術賞

    2021.5   燃料電池開発情報センター   高性能・高耐久性炭化水素系電解質膜の創製

    宮武健治

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    Award type：Award from Japanese society, conference, symposium, etc. 

  • FCDIC学術賞

    2021.5   燃料電池開発情報センター   高性能・高耐久性炭化水素系電解質膜の創製

    宮武健治

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    Award type：Award from Japanese society, conference, symposium, etc. 

  • 文部科学大臣表彰科学技術賞（研究部門）

    2021.4   文部科学省   次世代燃料電池への応用を目指した革新的高分子薄膜の研究

    宮武健治、犬飼潤治、内田誠

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    Award type：Award from Japanese society, conference, symposium, etc. 

  • 文部科学大臣表彰科学技術賞（研究部門）

    2021.4   文部科学省   次世代燃料電池への応用を目指した革新的高分子薄膜の研究

    宮武健治, 犬飼潤治, 内田誠

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    Award type：Award from Japanese society, conference, symposium, etc. 

  • 第25回山梨科学アカデミー賞

    2020.11   山梨科学アカデミー   高性能イオン導電性高分子の開発とエネルギーデバイスへの応用

    宮武健治

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    Award type：Award from Japanese society, conference, symposium, etc.  Country：Japan

  • 第25回山梨科学アカデミー賞

    2020.11   山梨科学アカデミー   高性能イオン導電性高分子の開発とエネルギーデバイスへの応用

    宮武健治

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    Award type：Award from Japanese society, conference, symposium, etc.  Country：Japan

  • 平成25年度科研費審査委員表彰

    2013.10   日本学術振興会  

    宮武健治

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    Award type：Award from Japanese society, conference, symposium, etc. 

  • 平成25年度科研費審査委員表彰

    2013.10   Japan Society for the Promotion of Science  

    宮武健治

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    Award type：Award from Japanese society, conference, symposium, etc. 

  • German Innovation Award Gottfried Wagener Prize

    2013.6   German Research and Innovation Forum Tokyo, German Chamber of Commerce and Industry in Japan  

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    Award type：International academic award (Japan or overseas) 

  • German Innovation Award Gottfried Wagener Prize

    2013.6   German Research and Innovation Forum Tokyo, German Chamber of Commerce and Industry in Japan  

    宮武健治

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    Award type：International academic award (Japan or overseas) 

    燃料電池への応用を目指したイオン導電性高分子の開発

  • 電気化学会第80回大会燃料電池シンポジウムポスター賞

    2013.3   電気化学会  

    望月 崇史,柿沼 克良,宮武 健治,内田 誠,出来 成人,渡辺 政廣

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    炭化水素系電解質膜の物性及び微細構造が燃料電池発電特性に及ぼす効果

  • SPSJ Hitachi Chemical Award 2012

    2012.9   The Society of Polymer Science, Japan  

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    Award type：Award from Japanese society, conference, symposium, etc. 

  • SPSJ Hitachi Chemical Award 2012

    2012.9   The Society of Polymer Science, Japan  

    宮武健治

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    Award type：Award from Japanese society, conference, symposium, etc. 

    イオン伝導性高分子の合成と燃料電池への展開

  • 第12回山梨科学アカデミー奨励賞

    2007.5   山梨科学アカデミー  

    宮武健治

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    Award type：Award from Japanese society, conference, symposium, etc. 

    固体高分子形燃料電池の高性能化を目指した新型電解質膜に関する研究

  • 第12回山梨科学アカデミー奨励賞

    2007.5   The Yamanashi Academy of Sciences  

    宮武健治

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    Award type：Award from Japanese society, conference, symposium, etc. 

    固体高分子形燃料電池の高性能化を目指した新型電解質膜に関する研究

  • 電気化学会第73回大会燃料電池シンポジウムポスター賞

    2006.4   電気化学会  

    近重陽平,宮武健治,渡辺政廣

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    燃料電池用新規ポリエーテル系電解質膜の合成と物性解析

  • 平成17年度戦略的プロジェクト若手研究者表彰

    2005.7   山梨大学  

    宮武健治

  • The Young Scientists' Prize, The Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology

    2005.4   Ministry of Education, Culture, Sports, science and Technology, Japan  

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    Award type：Award from Japanese society, conference, symposium, etc. 

  • The Young Scientists' Prize, The Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology

    2005.4   Ministry of Education, Culture, Sports, science and Technology, Japan  

    宮武健治

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    Award type：Award from Japanese society, conference, symposium, etc. 

    燃料電池分野における高分子電解質膜の研究

  • 高分子研究奨励賞

    2003.5   高分子学会  

    宮武健治

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    Award type：Award from Japanese society, conference, symposium, etc. 

    芳香族高分子電解質膜の合成とプロトン伝導特性に関する研究

  • 高分子研究奨励賞

    2003.5   The Society of Polymer Science, Japan  

    宮武健治

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    Award type：Award from Japanese society, conference, symposium, etc. 

    芳香族高分子電解質膜の合成とプロトン伝導特性に関する研究

  • 水野記念学術賞

    1996.3   早稲田大学  

    宮武健治

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    Synthesis, Characterization and Advanced Performance of Polyarylenesulfoniums

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Teaching Experience (On-campus)

  • Battery Science and Technology Major achievement

    2023Year

  • Technical English in Chemistry Major achievement

    2023Year

  • Advanced Physical Chemistry Major achievement

    2016Year  Type of subject：Master's (Graduate School)

  • Advanced Science for Fuel Cell Design II Major achievement

    2016Year  Type of subject：Dr. (Graduate School)

  • Advanced Science for Fuel Cell Design I Major achievement

    2016Year  Type of subject：Dr. (Graduate School)

  • Advanced Science on Electrochemical Materials Major achievement

    2016Year  Type of subject：Dr. (Graduate School)

  • Advanced Science for Fuel Cell Design Major achievement

    2016Year  Type of subject：Master's (Graduate School)

  • Advanced Science for Fuel Cell Design II Major achievement

    2015Year  Type of subject：Dr. (Graduate School)

  • Advanced Physical Chemistry Major achievement

    2015Year  Type of subject：Master's (Graduate School)

  • Advanced Science for Fuel Cell Design I Major achievement

    2015Year  Type of subject：Master's (Graduate School)

  • Advanced Science for Fuel Cell Design II Major achievement

    2015Year  Type of subject：Master's (Graduate School)

  • Advanced Science on Electrochemical Materials Major achievement

    2015Year  Type of subject：Dr. (Graduate School)

  • Advanced Science for Fuel Cell Design I Major achievement

    2015Year  Type of subject：Dr. (Graduate School)

  • Technical English in Chemistry Major achievement

    2014Year  Type of subject：Professional education (undergraduate)

  • Advanced Science for Fuel Cell Design II Major achievement

    2014Year  Type of subject：Dr. (Graduate School)

  • Advanced Science for Fuel Cell Design I Major achievement

    2014Year  Type of subject：Dr. (Graduate School)

  • Advanced Science on Electrochemical Materials Major achievement

    2014Year  Type of subject：Dr. (Graduate School)

  • Advanced Science for Fuel Cell Design II Major achievement

    2014Year  Type of subject：Master's (Graduate School)

  • Advanced Science for Fuel Cell Design I Major achievement

    2014Year  Type of subject：Master's (Graduate School)

  • Advanced Physical Chemistry Major achievement

    2014Year  Type of subject：Master's (Graduate School)

  • Battery engineering Major achievement

    2014Year  Type of subject：Professional education (undergraduate)

  • Technical English in Chemistry Major achievement

    2013Year  Type of subject：Professional education (undergraduate)

  • Clean Energy Conversion Technology Major achievement

    2013Year  Type of subject：Master's (Graduate School)

  • Advanced Science for Fuel Cell Design II Major achievement

    2013Year  Type of subject：Master's (Graduate School)

  • Advanced Science for Fuel Cell Design I Major achievement

    2013Year  Type of subject：Master's (Graduate School)

  • Advanced Physical Chemistry Major achievement

    2013Year  Type of subject：Master's (Graduate School)

  • Advanced Science on Electrochemical Materials Major achievement

    2013Year  Type of subject：Dr. (Graduate School)

  • Advanced Science for Fuel Cell Design I Major achievement

    2013Year  Type of subject：Dr. (Graduate School)

  • Advanced Science for Fuel Cell Design II Major achievement

    2013Year  Type of subject：Dr. (Graduate School)

  • Technical English in Chemistry Major achievement

    2012Year  Type of subject：Professional education (undergraduate)

  • Advanced Science for Fuel Cell Design II Major achievement

    2012Year  Type of subject：Dr. (Graduate School)

  • Advanced Science for Fuel Cell Design I Major achievement

    2012Year  Type of subject：Dr. (Graduate School)

  • Advanced Science on Electrochemical Materials Major achievement

    2012Year  Type of subject：Dr. (Graduate School)

  • Advanced Physical Chemistry Major achievement

    2012Year  Type of subject：Master's (Graduate School)

  • Advanced Science for Fuel Cell Design I Major achievement

    2012Year  Type of subject：Master's (Graduate School)

  • Advanced Science for Fuel Cell Design II Major achievement

    2012Year  Type of subject：Master's (Graduate School)

  • Clean Energy Conversion Technology Major achievement

    2012Year  Type of subject：Master's (Graduate School)

  • Physical Chemistry III Major achievement

    2012Year  Type of subject：Professional education (undergraduate)

  • Physical Chemistry III Major achievement

    2011Year  Type of subject：Professional education (undergraduate)

  • Technical English in Chemistry Major achievement

    2011Year  Type of subject：Professional education (undergraduate)

  • Physical Chemistry III Major achievement

    2010Year  Type of subject：Professional education (undergraduate)

  • Technical English in Chemistry Major achievement

    2010Year  Type of subject：Professional education (undergraduate)

  • 物理化学第三 Major achievement

    2009Year  Type of subject：Professional education (undergraduate)

  • 化学技術英語 Major achievement

    2009Year  Type of subject：Professional education (undergraduate)

  • 化学技術英語 Major achievement

    2008Year  Type of subject：Professional education (undergraduate)

  • 物理化学第三 Major achievement

    2008Year  Type of subject：Professional education (undergraduate)

  • 機能性高分子設計特論

    2004Year  Type of subject：Master's (Graduate School)

  • 機能性高分子材料化学特論

    2004Year  Type of subject：Dr. (Graduate School)

  • 機能性高分子材料化学特論

    2003Year  Type of subject：Dr. (Graduate School)

  • 機能性高分子材料化学特論

    2002Year  Type of subject：Dr. (Graduate School)

  • 機能性高分子設計特論

    2002Year  Type of subject：Master's (Graduate School)

  • 機能性高分子材料化学特論

    2001Year  Type of subject：Dr. (Graduate School)

  • 機能性高分子設計特論

    2001Year  Type of subject：Master's (Graduate School)

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Professional Memberships

  • Hydrogenomics Alliance, Japan

    2022.2

  • The Materials Research Society, Japan

    2022.1

  • Royal Society of Chemistry

  • 燃料電池開発情報センター

  • Chemical Society of Japan

  • The Society of Polymer Science, Japan

  • The Electrochemical Society of Japan

  • American Chemical Society

  • International Society of Electrochemistry

  • The Society of Polymer Science, Japan

  • Chemical Society of Japan

  • The Materials Research Society, Japan

  • Royal Society of Chemistry

  • International Society of Electrochemistry

  • American Chemical Society

  • Hydrogenomics Alliance, Japan

  • 燃料電池開発情報センター

  • The Electrochemical Society of Japan

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Committee Memberships

  • 水素科学技術連携研究会   理事  

    2022.2   

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    Committee type：Society