Acta Chimica Sinica ›› 2010, Vol. 68 ›› Issue (02): 136-142. Previous Articles     Next Articles

Full Papers

催化剂载体对硼氢化钠在纳米金电极上电氧化行为的影响

裴斧,王先友*,何培瑛,王雁生,王宏,易兰花,陈权启   

  1. (湘潭大学化学学院 环境友好化学与应用教育部重点实验室 湖南 湘潭 411105)
  • 投稿日期:2009-06-15 修回日期:2009-09-04 发布日期:2010-03-17
  • 通讯作者: 王先友 E-mail:wxianyou@yahoo.com
  • 基金资助:

    湖南省教育厅重点项目(No. 08A067)资助

Effect of Catalyst Supporter on Electrooxidation of Sodium Borohydride on Gold Electrode

Pei Fu Wang Xianyou* He Peiying Wang Yansheng Wang Hong Yi Lanhua Chen Quanqi   

  1. (Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, Xiangtan University, Hunan 411105)
  • Received:2009-06-15 Revised:2009-09-04 Published:2010-03-17

The nanosized Au particles supported by mesoporous carbon (MPC) and VXC-72R carbon black (CB) were prepared as catalyst for the direct oxidation of sodium borohydride, and labeled as Au/MPC and Au/CB, respectively. The structure and surface morphology of Au/MPC and Au/CB were characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The results showed that the nanosized Au particles had a face cubic structure and were uniformly distributed on the surfaces of the mesoporous carbon and VXC-72R carbon black. Besides, the size of the Au particles supported by the mesoporous carbon was about 16 nm, which was apparently less than that supported by the VXC-72R carbon black. The electrochemical properties of the samples were investigated by the cyclic voltammogram and linear potential sweeping. It was found that the peak current of oxidation on the Au/MPC electrode was 42.88 mA•cm-2, which was 12.5% higher than that on the Au/CB electrode (38.10 mA•cm-2).

Key words: direct borohydride fuel cell, anode catalyst, catalyst supporter, electrooxidation