Preparation of Carbon Supported PdPb Catalysts and Its Electrocatalytic Performance in Oxidation of Formic Acid

doi:10.3969/j.issn.0251-0790.2012.09.026

Abstract

Abstract:

The carbon supported PdPb catalysts with different Pd and Pb mass ratios were prepared in the aqueous solution by a chemical reduction method. The studies show that the PdPb/C catalysts can promote the activity for formic acid electrooxidation and change the reaction mechanism. As the catalysts with small ratio of Pb, it can enhance the dispersion of active component and largely enhance the electrocatalytic activity of the catalysts toward the electrooxidation of formic acid. When the mass ratio of Pd and Pb is 8: 1, the catalyst shows the highest catalytic activity for formic acid oxidation, and the peak current density increases 180% compared to that on Pd/C. When the mass ratio of Pd to Pb is 2: 1, the catalyst shows the best behavior of stability.

Key words: Pd, Pb, Carbon supported PdPb catalyst, Oxidation of formic acid, Electrocatalyst, Direct formic acid fuel cell

CLC Number:

O643.3

TrendMD:

GENG Xiao-Wei, WU Bing, GAO Ying. Preparation of Carbon Supported PdPb Catalysts and Its Electrocatalytic Performance in Oxidation of Formic Acid[J]. Chem. J. Chinese Universities, 2012, 33(09): 2025.

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Preparation of Carbon Supported PdPb Catalysts and Its Electrocatalytic Performance in Oxidation of Formic Acid

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