Nano/microscale simulation of proton transport in catalyst layer

K. Kobayashi, T. Mabuchi, G. Inoue, T. Tokumasu

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

Abstract

To spread polymer electrolyte fuel cells, improving the cell performance is required. The cell performance depends on various factors. One of the factors that lowers cell performance is proton transport resistance in catalyst layers. Catalyst layers have Nano/Microscale structures which influence on proton transport resistance. In this study, to investigate the relationship between structures of catalyst layers and cell performances, mass transport and chemical reactions are calculated in the 3D catalyst layer models. The information about the ionomer thickness dependence on the diffusion coefficient of protons based on the molecular dynamics simulation studies, is introduced to transport calculation in order to analyze nanoscale structure influence on the cell performance. As a result, we have found that the output voltage increases over the whole range of current density with increasing ionomer/carbon ratio considering ionomer thickness dependence. This result suggests that the nanoscale structure in catalyst layer has a large influence on the cell performance.

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.
Pages515-522
Number of pages8
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

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All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Kobayashi, K., Mabuchi, T., Inoue, G., & Tokumasu, T. (2019). Nano/microscale simulation of proton transport in catalyst layer. 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. 515-522). (ECS Transactions; Vol. 92, No. 8). Electrochemical Society Inc.. https://doi.org/10.1149/09208.0515ecst