Electrocatalytic properties of platinum and it's binary alloy with vanadium in oxygen reduction reaction(ORR)

Document Type : Research Paper

Authors

Not-mentioned

Abstract

The electrocatalysis of the oxygen reduction reaction (ORR) on carbon supported
Pt-V (1:1) catalyst in polymer electrolyte fuel cells (PEFC) was investigated. At
an oxygen pressure of one atm an enhanced electrocatalytic property of Pt-V/C
compared with Pt/C is revealed. These results indicate the occurrence of a
different electrocatalytic mechanism for the ORR on Pt/C and Pt-V/C. An
increase of mass transport overpotentials is observed for the Pt-V/C catalyst, and
this was related to the presence of vanadium oxide. So the ORR activity of Pt-V/C
at oxygen pressure of one atm is higher than that of Pt/C.

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