Carbon-Supported Au Hollow Nanospheres as Anode Catalysts for Direct Borohydride−Hydrogen Peroxide Fuel Cells

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• 作者：Jianliang Wei ; Xianyou Wang ; Ying Wang ; Jia Guo ; Peiying He ; Shunyi Yang ; Na Li ; Fu Pei ; Yansheng Wang
• 刊名：Energy & Fuels
• 出版年：2009
• 出版时间：August 20, 2009
• 年：2009
• 卷：23
• 期：8
• 页码：4037-4041
• 全文大小：223K
• 年卷期：v.23,no.8(August 20, 2009)
• ISSN：1520-5029

文摘

The carbon-supported Au hollow nanosphere (HNAu/C) composite electrocatalyst was prepared by sacrificial templates at room temperature. The catalytic activity of HNAu/C and carbon-supported Au solid nanoparticles (SNAu/C) for BH₄⁻ were compared. Cyclic voltammogram (CV) results showed that the HNAu/C catalysts exhibit a higher catalytic activity for BH₄⁻ electro-oxidation. A simple direct borohydride−hydrogen peroxide fuel cell using HNAu/C as anode catalysts and SNAu/C as cathode catalysts was fabricated. The effect of sodium hydroxide and borohydride concentrations for the cell performance was studied. It was found that optimum anolyte consists of 1 M borohydride and 3 M sodium hydroxide. The maximum power density achieved was 25.8 mW cm⁻² at a current density of 50 mA cm⁻².