Two-dimensional PtRu Nanoclusters Carbon Based Electrocatalysts for Methanol Oxidation

胡忠良¹，QIN Shilin²，LI Zhaohui²，ZHU Yirong¹，LIU Weijian¹

1. College of Metallurgy and Material Engineering, Hunan University of Technology2. College of Chemistry,Xiangtan University

摘 要：A novel method to prepare an electrocatalyst with a new structure and high catalytic performance was reported. Two-dimensional（2 D） PtRu nanoclusters have been successfully deposited on graphene oxide and carbon black supports. Compared with the commercial 3 D E-TEK PtRu samples, the prepared 2 D PtRu composites have larger electrochemically active surface area and display much higher catalytic activity toward methanol oxidation reaction. The preparation method mainly includes the following procedures: oxidation of carbon matrix, Pb²⁺ adsorption on the surface of carbon support, Pb²⁺ electrochemical reduction and galvanic displacement of Pb⁰ by Pt²⁺ and Ru³⁺. The method developed in this study could be viable for solving the problem of low electrocatalytic activity in direct methanol fuel cell anodes.

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