物理化学学报 >> 1992, Vol. 8 >> Issue (03): 401-404.doi: 10.3866/PKU.WHXB19920322

研究简报 上一篇    下一篇

低碳钢基体中离子注入镍和钼的电催化活性

吴仲达; 李松梅; 林文廉; 丁晓纪   

  1. 北京师范大学化学系,北京 100875;北京师范大学低能核物理研究所
  • 收稿日期:1990-12-12 修回日期:1991-04-10 发布日期:1992-06-15
  • 通讯作者: 吴仲达

The Electrocatalytic Activity of Nickel and Molybdenum Implanted in Mild Steel Substrates

Wu Zhong-Da; Li Song-Mei; Lin Wen-Lian; Ding Xiao-Ji   

  1. Department of Chemistry Beijing Normal University, Beijing 100875; Institute of Low Energy Nuclear Physics Beijing Normal University, Beijing
  • Received:1990-12-12 Revised:1991-04-10 Published:1992-06-15
  • Contact: Wu Zhong-Da

关键词: 离子注入, 电催化, 电化学析氢, 电极

Abstract: Ion implantation method was used for the doping of mild steel substrates with Ni and Mo. The mild steel was bombarded with 1×10~(16) ions·cm~(-2) of Ni and Mo. The resulting catalysts were tested with respect to their activity for the electrochemical H~+-reduction. The results indicate that implanted mild steel exhibit low hydrogen overvoltage (130~160 mV, 20~60 A·dm~(-2) in 30 wt% KOH at 25 ℃) and excellent stability. The Ni and Mo bombardments lead to a much more active in comparison with untreated mild steel. Ion beam mixing is less effective than ion implantation in this case. By XPS the shifts of electron bonding energies for Ni_(2p) and Mo_(3d) were observed for implanted mild steel with respect to the corresponding Ni and Mo. The electrocatalytic activity of implanted substrates was explained provisionally by an interaction between implanted metals in mild steel.

Key words: Ion implantation, Electrocatalysis, Electrochemical hydrogen evolution, Electrode