Ti-porous-sheet-supported Pt electrocatalysts for PEFCs

D. Kawachino, Z. Noda, J. Matsuda, A. Hayashi, K. Sasaki

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

4 Citations (Scopus)

Abstract

While carbon black is widely used as the catalyst support material for polymer electrolyte fuel cells (PEFCs), TiCh has been considered as an alternative material because of its stability under the PEFC operating condition, but TiO2-supported Pt electrocatalysts tend to exhibit lower initial electrochemical properties than the typical Pt/C electrocatalyst. Here, a Pt-decorated porous Ti-based electrode is developed, consisting of Pt nano-catalysts and the porous sheet made of Ti-metal fibers acting as both a catalyst support and a gas diffusion layer (GDL). It is demonstrated that Pt nanoparticles of a few nm in diameter can be homogeneously deposited on the porous Ti sheet, the outermost surface of which is oxidized. Such a carbon-free all-metallic porous electrode structure acting as electrocatalytic layer and GDL exhibits relatively high electrochemical surface area (ECSA) up to 92 m2g-1 for the Pt loading of 0.00108 mgPtcm-2, and can be an all-in-one electrode structure for PEFCs.

Original languageEnglish
Title of host publicationECS Transactions
EditorsP. A. Shirvanian, V. Ramani, Y.-T. Kim, H. A. Gasteiger, K. Shinohara, K. E. Ayers, B. S. Pivovar, D. J. Jones, H. Uchida, K. A. Perry, S. Mitsushima, H. Xu, T. J. Schmidt, J. M. Fenton, T. F. Fuller, P. Strasser, F. Buechi, K. E. Swider-Lyons, R. A. Mantz, S. Narayan, P. N. Pintauro, C. Coutanceau, A. Z. Weber
PublisherElectrochemical Society Inc.
Pages781-787
Number of pages7
Edition8
ISBN (Electronic)9781607685395
DOIs
Publication statusPublished - Jan 1 2017
EventSymposium on Polymer Electrolyte Fuel Cells 17, PEFC 2017 - 232nd ECS Meeting - National Harbor, United States
Duration: Oct 1 2017Oct 5 2017

Publication series

NameECS Transactions
Number8
Volume80
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Other

OtherSymposium on Polymer Electrolyte Fuel Cells 17, PEFC 2017 - 232nd ECS Meeting
CountryUnited States
CityNational Harbor
Period10/1/1710/5/17

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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