Fast and facile preparation of reduced graphene oxide supported Pt-Co electrocatalyst for methanol oxidation

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• 作者：Jianfeng Shen ; Bo Yan ; Min Shi ; Hongwei Ma ; Na Li ; Mingxin Ye ; ^{mxye@fudan.edu.cn}
• 关键词：A. Composites ; A. Nanostructures ; B. Chemical synthesis ; D. Electrochemical properties
• 刊名：Materials Research Bulletin
• 出版年：2012
• 期刊代码：60_00255408
• 类别：ms
• 出版时间：June, 2012
• 卷：47
• 期：6
• 页码：1486-1493
• 文件大小：1427 K

摘要

In this study, we report a scalable, fast, and facile method for preparation of reduced graphene oxide (RGO) sheets supported Pt-Co electrocatalyst for methanol oxidation. Mixed reducing agents were used and the activity of the catalysts was studied. It was found that the presence of RGO leads to higher activity, which might be due to the increasing of electrochemically accessible surface areas and easier charge-transfer at the interfaces. Co can greatly enhance the electrocatalytic activity and moderate the poisoning of Pt catalyst. Under same Pt loading mass and experimental conditions, the RGO-Pt-Co catalyst shows the highest electro catalytic activity and improved resistance to carbon monoxide poisoning among the prepared catalysts.