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研究论文

锌-铟合金电极在浓KOH溶液中的电化学行为

  • 王志林 ,
  • 章小鸽 ,
  • 杜荣归 ,
  • 林昌健
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  • 厦门大学化学化工学院化学系固体表面物理化学国家重点实验室,加拿大Teck Cominco金属公司,厦门大学化学化工学院化学系固体表面物理化学国家重点实验室,厦门大学化学化工学院化学系固体表面物理化学国家重点实验室 福建厦门361005,L5K1B4加拿大,福建厦门361005,福建厦门361005

收稿日期: 2007-11-28

  修回日期: 2007-11-28

  网络出版日期: 2007-11-28

Electrochemical Behavor of Zinc-Indium Alloy Electrodes in Concentrated Alkaline Solution

  • WANG Zhi-lin ,
  • ZHANG Xiao-ge ,
  • DU Rong-gui ,
  • LIN Chang-jian
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  • (1.State Key Laboratory of Physical Chemistry of Solid Surfaces,Department of Chemistry,Xiamen University,Xiamen 361005,Fujian,China,2.Teck Cominco Metals Ltd,Canada

Received date: 2007-11-28

  Revised date: 2007-11-28

  Online published: 2007-11-28

摘要

应用动电位扫描,恒流放电等电化学方法研究含铟锌电极的电化学行为.用SEM和EDS观察放电后的Zn-In合金电极表面形貌,初步探讨了不同In含量的锌-铟合金电极在浓KOH溶液中电化学行为及其影响因素.结果表明,与纯锌电极相比,Zn-In合金的电极致钝电流增大,达到钝化的时间缩短,从而明显地提高了该电极的电化学活性.

本文引用格式

王志林 , 章小鸽 , 杜荣归 , 林昌健 . 锌-铟合金电极在浓KOH溶液中的电化学行为[J]. 电化学, 2007 , 13(4) : 407 -410 . DOI: 10.61558/2993-074X.1843

Abstract

The electrochemical behavior of zinc-indium alloy electrodes in 35%KOH solutions has been investigated by electrochemical methods including the potentiodynamic polarization and discharge measurements under constant current density.The results indicate that the anodic current density and passive current density increase after the indium addition.The discharge measurement shows that the addition of indium shortens the time to passive state for the Zn alloy compared to pure zinc at a large discharge conditions,that is the addition of indium may enhance the electrochemical activity of Zn alloy electrodes.It is found that the anodic dissolution of zinc-indium alloy electrodes in the concentrated KOH solution occurs along the certain crystalline face,and the surface roughness increases with the increasing of indium addition due to the anodic dissolution.

参考文献

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