Investigation of Concentration Overvoltage Increase in Low Pt-loading PEFC

S. Takei, K. Uda, M. Nagayama, K. Sasaki, A. Hayashi

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

Abstract

Based on the fact that concentration overvoltage increases for low Pt-loading MEAs from our previous study, we have investigated the mechanism of increase in concentration overvoltage in order to develop highly efficient low Pt-loading PEFCs. In this study, controlling water discharge in the cathode layer has been tried through two methods, lowering the relative humidity condition of MEA operation and using a more hydrophobic carbon support, graphitized Ketjen black. The second method has worked out even though the first method hasn't. Consequently, by changing the carbon support from Ketjen black to graphitized Ketjen black, approximately 60% reduction in concentration overvoltage has been successfully achieved under the 0.23 mgC/cm2 condition.

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.
Pages293-303
Number of pages11
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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    Takei, S., Uda, K., Nagayama, M., Sasaki, K., & Hayashi, A. (2019). Investigation of Concentration Overvoltage Increase in Low Pt-loading 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. 293-303). (ECS Transactions; Vol. 92, No. 8). Electrochemical Society Inc.. https://doi.org/10.1149/09208.0293ecst