高等学校化学学报

高等学校化学学报 ›› 1991, Vol. 12 ›› Issue (12): 1666.

• 研究论文 • 上一篇    下一篇

钛基体中离子注入镍和钼的电催化活性

吴仲达1, 李松梅1, 林文廉2, 丁晓纪2   

  1. 1. 北京师范大学化学系, 北京, 100875;
    2. 北京师范大学低能核物理研究所
  • 收稿日期:1990-10-31 出版日期:1991-12-24 发布日期:1991-12-24
  • 通讯作者: 吴仲达
  • 基金资助:

    国家自然科学基金

The Electrocatalytic Activity of Nickel and Molybdenum Implanted in Titanium Substrates

Wu Zhong-da1, Li Song-mei1, Lin Wen-lian2, Ding Xiao-ji2   

  1. 1. Department of Chemistry, Beijing Normal University, Beijing, 100875;
    2. Institute of Low Energy Nuclear Physics, Beijing Normal University, Beijing
  • Received:1990-10-31 Online:1991-12-24 Published:1991-12-24

PDF (PC)

被引次数

16

摘要： Grenness等发现,铂离子注入钨基体中,对H+还原产生的电催化性能与纯铂相近,此后,Wolf等用离子注入和离子束混合技术制作了多种电极,其中Pt/RuO2、Pt/C、Pt/WC电极用于H+和O2的电还原以及甲醇和甲酸的电氧化,其催化活性和稳定性均优于光滑的纯铂电极。

关键词: 离子注入, 电催化, 电化学析氢, 电极

Abstract: The catalyst was prepared by implanting Ni and Mo into Ti substrates. Ti was implanted with 1×1016ions·cm-2of Ni and 1×1016-1×1017ions·cm-2of Mo. The concentration profiles of Ni and Mo implanted were measured by XPS. The quantitative measurements show that the concentration profiles of Ni and Mo in Ti are approximately Gauss profiles. The current density potential curves of the cathodic hydrogen evolution reaction show that Ni and Mo implanted into Ti electrode exhibit a low hydrogen overvoltage (110-180 mV at 25℃, 200-400 mA· cm-2, in 30 wt% KOH) and an excellent stability. The observed electrocatalytic activity is explained provisionally by an interaction between the ions implanted in Ti.

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

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