Effect of Surface Ion Conductivity of Anion Exchange Membranes on Fuel Cell Performance

Masanori Hara, Taro Kimura, Takuya Nakamura, Manai Shimada, Hideaki Ono, Shigefumi Shimada, Kenji Miyatake*, Makoto Uchida, Junji Inukai, Masahiro Watanabe

*この研究の対応する著者

研究成果: Article査読

12 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)9557-9565
ページ数9
ジャーナルLangmuir
32
37
DOI
出版ステータスPublished - 2016 9 20
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 表面および界面
  • 分光学
  • 電気化学

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