Durability of sulfonated polyimide membrane evaluated by long-term polymer electrolyte fuel cell operation

Makoto Aoki; Naoki Asano; Kenji Miyatake; Hiroyuki Uchida; Masahiro Watanabe

doi:10.1149/1.2193334

Durability of sulfonated polyimide membrane evaluated by long-term polymer electrolyte fuel cell operation

Makoto Aoki^*, Naoki Asano, Kenji Miyatake, Hiroyuki Uchida, Masahiro Watanabe

^*Corresponding author for this work

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

75 Citations (Scopus)

Abstract

A novel proton conducting polymer electrolyte membrane, sulfonated polyimide having aliphatic moieties (SPI-5), was subjected to long-term fuel cell operation. High durability of the SPI-5 membrane was confirmed by single-cell testings at 80°C for 5000 h. Still, the SPI-5 membrane turned out to be fragile after the cell operation. Through the investigation of the changes in thickness, ion exchange capacity, molecular weight, and NMR spectra, it was concluded that the most probable degradation mode of the sulfonated polyimide membrane should be the hydrolysis of imide linkages, while oxidative degradation is also likely to be involved.

Original language	English
Pages (from-to)	A1154-A1158
Journal	Journal of the Electrochemical Society
Volume	153
Issue number	6
DOIs	https://doi.org/10.1149/1.2193334
Publication status	Published - 2006
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Renewable Energy, Sustainability and the Environment
Surfaces, Coatings and Films
Electrochemistry
Materials Chemistry

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1149/1.2193334

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abstract = "A novel proton conducting polymer electrolyte membrane, sulfonated polyimide having aliphatic moieties (SPI-5), was subjected to long-term fuel cell operation. High durability of the SPI-5 membrane was confirmed by single-cell testings at 80°C for 5000 h. Still, the SPI-5 membrane turned out to be fragile after the cell operation. Through the investigation of the changes in thickness, ion exchange capacity, molecular weight, and NMR spectra, it was concluded that the most probable degradation mode of the sulfonated polyimide membrane should be the hydrolysis of imide linkages, while oxidative degradation is also likely to be involved.",

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AU - Aoki, Makoto

AU - Asano, Naoki

AU - Miyatake, Kenji

AU - Uchida, Hiroyuki

AU - Watanabe, Masahiro

PY - 2006

Y1 - 2006

N2 - A novel proton conducting polymer electrolyte membrane, sulfonated polyimide having aliphatic moieties (SPI-5), was subjected to long-term fuel cell operation. High durability of the SPI-5 membrane was confirmed by single-cell testings at 80°C for 5000 h. Still, the SPI-5 membrane turned out to be fragile after the cell operation. Through the investigation of the changes in thickness, ion exchange capacity, molecular weight, and NMR spectra, it was concluded that the most probable degradation mode of the sulfonated polyimide membrane should be the hydrolysis of imide linkages, while oxidative degradation is also likely to be involved.

AB - A novel proton conducting polymer electrolyte membrane, sulfonated polyimide having aliphatic moieties (SPI-5), was subjected to long-term fuel cell operation. High durability of the SPI-5 membrane was confirmed by single-cell testings at 80°C for 5000 h. Still, the SPI-5 membrane turned out to be fragile after the cell operation. Through the investigation of the changes in thickness, ion exchange capacity, molecular weight, and NMR spectra, it was concluded that the most probable degradation mode of the sulfonated polyimide membrane should be the hydrolysis of imide linkages, while oxidative degradation is also likely to be involved.

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JF - Journal of the Electrochemical Society

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Durability of sulfonated polyimide membrane evaluated by long-term polymer electrolyte fuel cell operation

Abstract

ASJC Scopus subject areas

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