Oxygen reduction reaction on platinum/tantalum oxide electrocatalysts for PEM fuel cells

Olga A. Baturina, Yannick Garsany, Thomas J. Zega, Rhonda M. Stroud, Karen E. Swider-Lyons

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

Abstract

Three synthetic routes are evaluated to obtain highly dispersed platinum on tantalum oxide supported catalysts: a) deposition of platinum colloids on tantalum oxide followed by mechanical grinding with Vulcan carbon; b) deposition of tantalum oxide on Vulcan carbon, followed by the deposition of platinum colloids; and c) deposition of Pt colloids on Vulcan carbon, followed by deposition of tantalum oxide. Specific activities for oxygen reduction reaction at 0.9V are a factor of two higher for catalysts synthesized via preparation routes a and b compared to Pt/VC. In comparison, the activity of catalysts synthesized via route c is close to that of Pt/VC. Mass activities for the catalysts possessing high specific activities are lower than for Pt/VC due to their low electrochemically available platinum surface area.

Original languageEnglish (US)
Title of host publicationECS Transactions - 7th Symposium Devoted to Proton Exchange Membrane Fuel Cells
Pages197-204
Number of pages8
Edition1 PART 1
DOIs
StatePublished - Dec 1 2007
Event7th Symposium Devoted to Proton Exchange Membrane Fuel Cells - 212th ECS Meeting - Washington, DC, United States
Duration: Oct 7 2007Oct 12 2007

Publication series

NameECS Transactions
Number1 PART 1
Volume11
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

Other7th Symposium Devoted to Proton Exchange Membrane Fuel Cells - 212th ECS Meeting
CountryUnited States
CityWashington, DC
Period10/7/0710/12/07

ASJC Scopus subject areas

  • Engineering(all)

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    Baturina, O. A., Garsany, Y., Zega, T. J., Stroud, R. M., & Swider-Lyons, K. E. (2007). Oxygen reduction reaction on platinum/tantalum oxide electrocatalysts for PEM fuel cells. In ECS Transactions - 7th Symposium Devoted to Proton Exchange Membrane Fuel Cells (1 PART 1 ed., pp. 197-204). (ECS Transactions; Vol. 11, No. 1 PART 1). https://doi.org/10.1149/1.2780931