锌铟合金电极在KOH溶液中电化学行为的研究  

Study on electrochemical behavior of Zn-In alloy electrode in KOH solution

作　　者：周合兵[1,2,3] 蔡增鑫[2] 王贵生[2] 蔡宗平[2,3] 李伟善[2,3] 

机构地区：[1]华南理工大学材料科学与工程学院,广东广州510641 [2]华南师范大学化学与环境学院,广东广州510631 [3]广东高校电化学储能与发电技术重点实验室,广东广州510631

出　　处：《电源技术》2009年第5期411-414,共4页Chinese Journal of Power Sources

基　　金：国家大学生创新性实验项目(081057402)

摘　　要：采用析氢实验、线性电位扫描和交流阻抗法,研究了锌、铟和锌铟合金电极在碱性溶液中的电化学行为。结果表明,合金中的铟能提高锌表面的析氢过电位,有效抑制缓解锌上的析氢反应和锌的阳极氧化,从而抑制锌在碱液中的自腐蚀。合金中铟的含量越高,这种抑制作用越强。此外,合金中的铟能扩大锌的活化电位区,有效改善锌在KOH溶液中的放电性能。Electrochemical behavior of Zn, In and Zn-ln alloy electrodes in KOH solution was investigated by measuring the volume of hydrogen evolution, linear sweep voltammetry and AC impedance. The results show that indium in Zn-In alloy can increase the overpotential of hydrogen evolution on zinc, which can effectively inhibit the hydrogen evolution reaction of Zn and the anodic oxidation of Zn in KOH solution, and the self-corrosion of Zn in alkaline solution can also be inhibited. As the content of indium in Zn-In alloy increasing, the inhibition is stronger. Moreover indium in Zn-In alloy can enlarge the active potential region and improve the discharge performance of Zn in KOH solution.

关 键 词：锌 铟 铟锌合金 电化学行为 

分 类 号：TM911[电气工程—电力电子与电力传动]