Improved Electrocatalytic Oxygen Reduction Performance of Platinum Ternary Alloy-Oxide in Solid-Polymer-Electrolyte Fuel Cells

G. Tamizhmani, G. A. Capuano

Research output: Contribution to journalArticle

95 Scopus citations

Abstract

The effect of base metal oxide (nonnoble metal oxide) in a Pt-Cr-Cu alloy catalyst is investigated for the oxygen reduction reaction in a solid-polymer-electrolyte fuel cell. The cathode mass activities at 0.9 V for Pt, Pt-Cr alloy, Pt-Cr-Cu alloy, and a mixture of Pt-Cr-Cu alloy with base metal oxide are compared. The enhancement factor is largest (about 6 times) for the mixture of Pt-Cr-Cu alloy with base metal oxide, compared to Pt-Cr and Pt-Cr-Cu alloys (about 2 times). The higher electrocatalytic activity of this material may be due to the combined effects of the Pt-Cr-Cu alloy and the base metal oxide. The physical and electrochemical characterizations are carried out using various techniques like x-ray diffraction, transmission electron microscopy, cyclic voltammetry, polarization, and ac impedance.

Original languageEnglish (US)
Pages (from-to)968-975
Number of pages8
JournalJournal of the Electrochemical Society
Volume141
Issue number4
DOIs
StatePublished - Jan 1 1994
Externally publishedYes

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Keywords

  • catalysis
  • catalysts
  • electrochemical analysis
  • electrochemistry
  • proton exchange membrane fuel cells
  • reduction (chemical)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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