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

doi:10.1021/acs.langmuir.6b01747

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	9557-9565
Number of pages	9
Journal	Langmuir
Volume	32
Issue number	37
DOIs	https://doi.org/10.1021/acs.langmuir.6b01747
Publication status	Published - 2016 Sept 20
Externally published	Yes

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Surfaces and Interfaces
Spectroscopy
Electrochemistry

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title = "Effect of Surface Ion Conductivity of Anion Exchange Membranes on Fuel Cell Performance",

abstract = "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.",

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

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doi = "10.1021/acs.langmuir.6b01747",

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T1 - Effect of Surface Ion Conductivity of Anion Exchange Membranes on Fuel Cell Performance

AU - Hara, Masanori

AU - Kimura, Taro

AU - Nakamura, Takuya

AU - Shimada, Manai

AU - Ono, Hideaki

AU - Shimada, Shigefumi

AU - Miyatake, Kenji

AU - Uchida, Makoto

AU - Inukai, Junji

AU - Watanabe, Masahiro

PY - 2016/9/20

Y1 - 2016/9/20

N2 - 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.

AB - 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.

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

Abstract

ASJC Scopus subject areas

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