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Electrocatalytic activity of Pt/C catalysts for methanol electrooxidation promoted by molybdovanadophosphoric acid

Paper ID Volume ID Publish Year Pages File Format Full-Text
51708 46851 2011 5 PDF Available
Title
Electrocatalytic activity of Pt/C catalysts for methanol electrooxidation promoted by molybdovanadophosphoric acid
Abstract

A Pt/C catalyst modified by the Keggin-structure molybdovanadophosphoric acid (PMV) is prepared by cyclic voltammetry and the modified Pt/C catalyst is studied for methanol electrooxidation. The results show that the PMV modified Pt/C catalyst has increased the electron transfer coefficient of the rate-determining step and diminished the adsorption of CO on Pt/C catalysts. Significant improvements in the catalytic activity and stability for methanol electrooxidation are observed, and it indicates that the PMV combined with Pt/C catalyst can be considered as a good electrocatalyst material for potential application in direct methanol fuel cells.

► PMV-Pt/C catalyst increased the electron transfer coefficient in reaction. ► PMV-Pt/C catalyst diminished the adsorption of CO on Pt/C catalysts. ► Pt/C-PMV3 catalysts had the best catalytic activity for methanol oxidation. ► Catalytic activity and stability improved largely on PMV-Pt/C catalysts.

Keywords
Fuel cell; Methanol electrooxidation; CO tolerance; Molybdovanadophosphoric acid
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Electrocatalytic activity of Pt/C catalysts for methanol electrooxidation promoted by molybdovanadophosphoric acid
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 14, Issue 1, 25 October 2011, Pages 10–14
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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