Performance of carbon-supported pt nanoparticles covered by silica layers with low ionomer in polymer electrolyte fuel cells

Tomohiro Ohnishi, Magnus So, Sakae Takenaka, Yoshifumi Tsuge, Gen Inoue

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

2 Citations (Scopus)

Abstract

Catalyst layers (CLs) are designed using a specific ionomer in accordance with the required mass transport. Although the ionomer is needed as the protonic conductor, an excess addition prevents oxygen diffusion. This work investigates the effect of using a SiO2 coating and a low amount of ionomer on the performance of a polymer electrolyte fuel cell (PEFC). The application of a SiO2 coating to the catalyst surface is expected to change its surface characteristics and enhance the dispersion of the catalyst in the ink. In terms of their particle distribution, catalysts coated with SiOj maintain a higher dispersivity than commercial Pt/C with a low amount of ionomer. The structure of the CLs was investigated by examining the effects of various amounts of ionomer in the presence and absence of Si02 coating by studying the cross-sectional morphology of the CLs with focused ion beam-scanning electron microscopy (FIB-SEM).

Original languageEnglish
Title of host publicationECS Transactions
EditorsC. Coutanceau, S. Narayan, Y.-T. Kim, Y. Gochi-Ponce, B.S. Pivovar, T.F. Fuller, R.A. Mantz, P. Shirvanian, D.J. Jones, F. Buechi, V.K. Ramani, J.M. Fenton, K.E. Swider-Lyons, T.J. Schmidt, K.E. Ayers, A.Z. Weber, P.N. Pintauro, P. Strasser, H. Xu, S. Mitsushima, H. Gasteiger, H. Uchida
PublisherElectrochemical Society Inc.
Pages453-460
Number of pages8
Edition13
ISBN (Electronic)9781607685395
DOIs
Publication statusPublished - Jan 1 2018
EventSymposium on Polymer Electrolyte Fuel Cells and Electrolyzers 18, PEFC and E 2018 - AiMES 2018, ECS and SMEQ Joint International Meeting - Cancun, Mexico
Duration: Sep 30 2018Oct 4 2018

Publication series

NameECS Transactions
Number13
Volume86
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Other

OtherSymposium on Polymer Electrolyte Fuel Cells and Electrolyzers 18, PEFC and E 2018 - AiMES 2018, ECS and SMEQ Joint International Meeting
CountryMexico
CityCancun
Period9/30/1810/4/18

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Ohnishi, T., So, M., Takenaka, S., Tsuge, Y., & Inoue, G. (2018). Performance of carbon-supported pt nanoparticles covered by silica layers with low ionomer in polymer electrolyte fuel cells. In C. Coutanceau, S. Narayan, Y-T. Kim, Y. Gochi-Ponce, B. S. Pivovar, T. F. Fuller, R. A. Mantz, P. Shirvanian, D. J. Jones, F. Buechi, V. K. Ramani, J. M. Fenton, K. E. Swider-Lyons, T. J. Schmidt, K. E. Ayers, A. Z. Weber, P. N. Pintauro, P. Strasser, H. Xu, S. Mitsushima, H. Gasteiger, ... H. Uchida (Eds.), ECS Transactions (13 ed., pp. 453-460). (ECS Transactions; Vol. 86, No. 13). Electrochemical Society Inc.. https://doi.org/10.1149/08613.0453ecst