Dependence of proton conductivity on cathode degradation in PEFC

T. Matoba, H. Miyamoto, M. Nagayama, K. Sasaki, A. Hayashi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Based on our previous finding that there is a correlation between proton conductivity of ionomers and carbon oxidation degradation in the cathode, we have focused on further investigating the correlation between proton conductivity of ionomers and carbon oxidation by varying ionomers. Carbon oxidation was evaluated in . terms of increase in pore volume using a F1B-SEM technique followed by reconstructing SEM images to three-dimensional images. We considered degradation under both the high RH • condition, where the difference in proton conductivity of ionomers • was less effective, and the low RH condition, where difference in proton conductivity of ionomers was more effective, by using different kinds of ionomers with different proton conductivity. Consequently, dependence of proton conductivity on carbon oxidation degradation in the low humidity condition was observed, and controlling the proton conductivity of ionomers was found to be important especially under low humidity.

Original languageEnglish
Title of host publicationPolymer Electrolyte Fuel Cells and Electrolyzers 19, PEFC and E 19
EditorsK. Swider-Lyons, H. Uchida, F. Buechi, W. E. Mustain, B. S. Pivovar, P. N. Pintauro, A. Z. Weber, D. Jones, H. Gasteiger, C. A. Rice, P. Strasser, E. Kjeang, K. Shinohara, S. Mitsushima, Y.-T. Kim, T. J. Schmidt, J. M. Fenton, R. A. Mantz, B. Lakshmanan, H. Xu
PublisherElectrochemical Society Inc.
Pages305-316
Number of pages12
Edition8
ISBN (Electronic)9781607685395
DOIs
Publication statusPublished - Jan 1 2019
EventSymposium on Polymer Electrolyte Fuel Cells and Electrolyzers 19, PEFC and E 2019 - 236th ECS Meeting - Atlanta, United States
Duration: Oct 13 2019Oct 17 2019

Publication series

NameECS Transactions
Number8
Volume92
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Conference

ConferenceSymposium on Polymer Electrolyte Fuel Cells and Electrolyzers 19, PEFC and E 2019 - 236th ECS Meeting
CountryUnited States
CityAtlanta
Period10/13/1910/17/19

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Matoba, T., Miyamoto, H., Nagayama, M., Sasaki, K., & Hayashi, A. (2019). Dependence of proton conductivity on cathode degradation in PEFC. In K. Swider-Lyons, H. Uchida, F. Buechi, W. E. Mustain, B. S. Pivovar, P. N. Pintauro, A. Z. Weber, D. Jones, H. Gasteiger, C. A. Rice, P. Strasser, E. Kjeang, K. Shinohara, S. Mitsushima, Y-T. Kim, T. J. Schmidt, J. M. Fenton, R. A. Mantz, B. Lakshmanan, & H. Xu (Eds.), Polymer Electrolyte Fuel Cells and Electrolyzers 19, PEFC and E 19 (8 ed., pp. 305-316). (ECS Transactions; Vol. 92, No. 8). Electrochemical Society Inc.. https://doi.org/10.1149/09208.0305ecst