Kinetic analysis of oxygen transport phenomena through ionomer thin film on Pt sueface in PEFC

研究成果: Conference contribution

抄録

New equations for oxygen transport, which is driven by the chemical potential gradient through an ionomer thin film on a Pt surface, were developed. The chemical potential was described by two terms which indicated the effect of the oxygen concentration and that of the interaction between oxygen molecules and the ionomer film on the oxygen flux. The oxygen transport resistance of the ionomer/Pt interface was the largest, which is suggested to be attributed to the structural properties; the density of the ionomer/Pt interface is very high compared with the rest of regions, and the oxygen concentration is lower since the oxygen molecules are distributed locally in the ionomer/Pt interface while the oxygen molecules are distributed widely in the rest of regions. The oxygen transport resistance of the ionomer/Pt interface was underestimated while that of the ionomer/gas interface was overestimated if one considers only the concentration gradient as the driving force. Therefore, the oxygen-film interaction was found to have a significant effect on the oxygen transport resistances of the both interfaces.

本文言語English
ホスト出版物のタイトルECS Transactions
編集者D.J. Jones, H. Gasteiger, H. Uchida, T.J. Schmidt, F. Buechi, K.E. Swider-Lyons, B.S. Pivovar, P.N. Pintauro, V.K. Ramani, J.M. Fenton, P. Strasser, K.E. Ayers, A.Z. Weber, T.F. Fuller, R.A. Mantz, H. Xu, C. Coutanceau, S. Mitsushima, S. Narayan, P. Shirvanian, Y.-T. Kim, Y. Gochi-Ponce
出版社Electrochemical Society Inc.
ページ489-496
ページ数8
13
ISBN(電子版)9781607688600
ISBN(印刷版)9781510871731
DOI
出版ステータスPublished - 2018
イベントSymposium on Polymer Electrolyte Fuel Cells and Electrolyzers 18, PEFC and E 2018 - AiMES 2018, ECS and SMEQ Joint International Meeting - Cancun, Mexico
継続期間: 2018 9月 302018 10月 4

出版物シリーズ

名前ECS Transactions
番号13
86
ISSN(印刷版)1938-6737
ISSN(電子版)1938-5862

Other

OtherSymposium on Polymer Electrolyte Fuel Cells and Electrolyzers 18, PEFC and E 2018 - AiMES 2018, ECS and SMEQ Joint International Meeting
国/地域Mexico
CityCancun
Period18/9/3018/10/4

ASJC Scopus subject areas

  • 工学(全般)

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