催化学报

催化学报 ›› 2007, Vol. 28 ›› Issue (4): 307-311.

• 研究论文 • 上一篇    下一篇

泡沫镍载碳化钨催化剂上的析氢反应

吴梅1,2,魏子栋1,沈培康2   

  1. 1 重庆大学化学化工学院, 重庆 400044; 2 中山大学物理科学与工程技术学院光电材料与技术国家重点实验室, 广东广州 510275
  • 收稿日期:2007-04-25 出版日期:2007-04-25 发布日期:2011-03-28

Hydrogen Evolution Reaction on Foam Ni-Supported WC Electrocatalyst

WU Mei1,2, WEI Zidong1, SHEN Peikang2*   

  1. 1 School of Chemical Engineering, Chongqing University, Chongqing 400044, China; 2 State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-Sen University, Guangzhou 510275, Guangdong, China
  • Received:2007-04-25 Online:2007-04-25 Published:2011-03-28

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摘要： 结合直接化学还原法和交替微波法制备了泡沫Ni载Ni-WC催化剂,用X射线衍射、扫描电镜和透射电镜对催化剂进行了表征,研究了其析氢电催化性能. 结果表明,在相同条件下,泡沫Ni载Ni-WC催化剂的析氢起始电位与泡沫Ni相比降低了60 mV左右. 电解质浓度和温度对泡沫Ni载Ni-WC催化剂的析氢电催化活性有很大影响.

关键词: 化学还原法, 微波, 泡沫镍, 碳化钨, 负载型催化剂, 析氢, 电催化

Abstract: Foam Ni-supported Ni-WC electrocatalysts were prepared using direct chemical reduction and intermittent microwave heating methods. The electrocatalysts were characterized by X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. The results show that the onset potential for the hydrogen evolution reaction on the foam Ni-WC electrocatalyst is 60 mV more positive than that on the pure foam Ni electrocatalyst. The concentration of the electrolyte and the temperature are critical for the catalytic performance of the foam Ni-WC electrocatalyst.

Key words: chemical reduction, microwave, foam nickel, tungsten carbide, supported catalyst, hydrogen evolution, electrocatalysis