Investigation of durability of MEAs at higher temperature

Masahiko Kitamura, Zhiyun Noda, Junko Matsuda, Akari Hayashi, Kazunari Sasaki

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

3 被引用数 (Scopus)

抄録

For the next generation polymer electrolyte fuel cell (PEFC), increase in operating temperature above 100 °C is desired in order to improve the cathode overvoltage. The objective of this study is to understand degradation phenomena of cathode catalysts by simulating fuel cell vehicle-s "load cycles", where Pt dissolution/reprecipitation reaction occurs. Standard membrane-electrode-assemblies (MEAs) made with Nafion® membrane were evaluated under increased temperature like 105 °C and also under reduced humidity condition like RH57%. As a result, comparing to the standard operating condition (80 °C and RH100%), Pt enlargement was suppressed at RH57% owing to the presence of smaller amount of water. However, degradation of Nafion® ionomer under low humidity condition led to lowering MEA performance. Furthermore, at higher temperature, in addition to Nafion® degradation, enhanced Pt enlargement was recognized and became a serious problem on MEA performance.

本文言語英語
ホスト出版物のタイトルPolymer Electrolyte Fuel Cells 15, PEFC 15
編集者H. A. Gasteiger, A. Z. Weber, V. K. Ramani, T. F. Fuller, R. A. Mantz, H. Uchida, F. N. Buchi, M. Edmundson, C. Coutanceau, J. M. Fenton, S. Mitsushima, T. J. Schmidt, K. Shinohara, K. Swider-Lyons, D. J. Jones, B. S. Pivovar, K. E. Ayers, K. A. Perry, S. R. Narayanan, P. Strasser
出版社Electrochemical Society Inc.
ページ701-708
ページ数8
17
ISBN(電子版)9781607685395
DOI
出版ステータス出版済み - 2015
イベントSymposium on Polymer Electrolyte Fuel Cells 15, PEFC 2015 - 228th ECS Meeting - Phoenix, 米国
継続期間: 10 11 201510 15 2015

出版物シリーズ

名前ECS Transactions
番号17
69
ISSN(印刷版)1938-6737
ISSN(電子版)1938-5862

その他

その他Symposium on Polymer Electrolyte Fuel Cells 15, PEFC 2015 - 228th ECS Meeting
国/地域米国
CityPhoenix
Period10/11/1510/15/15

All Science Journal Classification (ASJC) codes

  • 工学(全般)

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