PEFCs Using Metallic Ti and Sn Electrocatalyst Supports

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


Carbon supports, which are widely used for electrocatalysts of polymer electrolyte fuel cells (PEFCs), can be electrochemically oxidized and corroded under the high potential conditions of PEFCs. Therefore, metal oxides, which are stable under PEFC conditions, have been proposed as alternative support materials. In this study, metals with porous structure, forming stable metal oxides on the outermost surface, are applied to electrocatalyst supports. Metallic titanium and metallic tin are examined, as their oxides (TiO2 and SnO2) are highly durable even under PEFC conditions. In addition, by tailoring porous structures, their metallic supports have the potential to function as both electrocatalyst layer and gas diffusion layer (GDL), simplifying the MEA structure and possibly fabrication processes. Such catalyst-integrated electrodes are prepared, and their electrochemical properties are evaluated.

Original languageEnglish
Title of host publication240th ECS Meeting - Polymer Electrolyte Fuel Cells and Electrolyzers 21 (PEFC and E 21)
PublisherIOP Publishing Ltd.
Number of pages11
ISBN (Electronic)9781607685395
Publication statusPublished - 2021
Event240th ECS Meeting - Orlando, United States
Duration: Oct 10 2021Oct 14 2021

Publication series

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


Conference240th ECS Meeting
Country/TerritoryUnited States

All Science Journal Classification (ASJC) codes

  • General Engineering


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