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Citation: Peng Cheng, Cheng Xuan, Zhang Ying, Chen Ling, Fan Qing-Bai. Comparison of Methanol Electrooxidation on Carbon Supported Pt and PtRu Catalysts[J]. Acta Physico-Chimica Sinica, ;2004, 20(04): 436-439. doi: 10.3866/PKU.WHXB20040423 shu

Comparison of Methanol Electrooxidation on Carbon Supported Pt and PtRu Catalysts

1.
Department of Materials Science and Engineering,Department of Chemistry,State Key Laboratory for Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen　361005,China;Gas Technology Institute, Des Plaines, IL 60018,USA

Received Date: 26 August 2003
Available Online: 15 April 2004

The methanol electrooxidation behaviors on commercial carbon supported Pt and PtRu catalysts in acid solution were compared by carrying out electrochemical studies. The potentiodynamic and potentiostatic experimental results showed that the PtRu/C has a higher electrocatalytic activity for the electrocatalytic oxidation of methanol than the Pt/C.Alloy formation of Ru with Pt not only modified the characteristics of H2 adsorption on the surface of catalyst but also shifted cathodically the reduction peaks of metal oxide on the cathodic sweep with respect to Pt/C. The interaction of CH3OH with Ru is a temperatureactivated process requiring elevated temperature.
- Direct methanol fuel cell;Methanol electrooxidation;　Electrocatalytic activity;Hydrogen adsorption;Catalyst
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