Effects of surface modification on electrochemical performance of MnO2

被引：0
|
作者：
Liu, LQ
Wang, JM [1 ]
Fan, YK
Wang, GG
Zhang, JQ
机构：
[1] Zhejiang Univ, Dept Chem, Hangzhou 310027, Peoples R China
[2] Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110015, Peoples R China
来源：
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2005年 / 15卷 / 04期
关键词：
manganese dioxide; surface modification; cyclic voltammetry; electrochemical impedance spectroscopy;
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The MnO2 samples coated with Ca(OH)(2) were prepared by a liquid-phase surface treatment method. The physical properties of the samples were examined by SEM, EDAX and chemical analysis, and their electrochemical performances were investigated by means of galvanostatic charge-discharge, cyclic voltammetry and electrochemical impedance spectroscopy (EIS). The SEM results show that the samples coated with Ca(OH)(2) display a porous surface structure. The electrochemical experiments indicate that the surface modification decreases the polarization of MnO2 electrodes and improves their discharge potentials and discharge capacities.
引用
收藏
页码：944 / 948
页数：5
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