Acta Chimica Sinica ›› 2008, Vol. 66 ›› Issue (6): 617-620. Previous Articles     Next Articles

Original Articles

温度对铅阳极膜电化学性能的影响

李党国*, 周根树   

  1. (深圳市特种功能材料重点实验室 深圳 518060)
  • 收稿日期:2007-07-06 修回日期:2007-09-21 出版日期:2008-03-28 发布日期:2008-03-28
  • 通讯作者: 李党国

Influence of Temperature on the Electrochemical Property of Anodic Film Formed on Lead

LI Dang-Guo*; ZHOU Gen-Shu   

  1. (Shenzhen Key Laboratory of Special Functional Materials, Shenzhen 518060)
  • Received:2007-07-06 Revised:2007-09-21 Online:2008-03-28 Published:2008-03-28
  • Contact: LI Dang-Guo

The influence of temperature on the electron property of anodic corrosion film formed on lead in a 4.5 mol/L H2SO4 solution, was investigated by using linear sweep voltammetry, A.C. voltammetry, electrochemical impedance spectroscopy (EIS) and Mott-Schottky plot methods. The results showed that the film resistance and film porosity increased, but the transfer resistance decreased with increasing the solution temperature. The EIS results implied that the film growth was controlled by a solid-phase mechanism and the Mott-Schottky curve revealed that the film exhibited an n-type semiconductive character, and the donor density decreased with the increment of the solution temperature.

Key words: linear sweep voltammetry, A.C. voltammetry, electrochemical impedance spectroscopy, Mott-Schottky equation, anodic corrosion film