Study on the influence of nanometric oxide on the electrochemical performance of negative electrode in nickel metal hydride batteries

被引：0
|
作者：
Deng Chao [1 ]
Shi Peng-Fei
Zhang Sen
机构：
[1] Harbin Inst Technol, Dept Appl Chem, Harbin 150001, Peoples R China
[2] Harbin Engn Univ, Coll Chem Engn, Harbin 150001, Peoples R China
来源：
ACTA CHIMICA SINICA | 2006年 / 64卷 / 10期
关键词：
nanometric copper oxide; nickel metal hydride battery; electrochemical performance; electric vehicle;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The negative electrode of MH/Ni battery with nanometric cupric oxide additive was prepared. The changes of storage capacity and mass of LaNi5 metal hydride electrode with nanometric CuO additive and the electrochemical performance of the electrode were investigated. Cyclic voltammograms and SEM results indicated that CuO was reduced during first charging process and copper particles were deposited on the surface of alloy. Electrochemical testing results showed that the electrode with additive had better rate capability and cycle performance. Electrochemical impedance spectroscopy analysis indicated that the electrode with additive had higher activity and electrical conductivity, and lower ohmic and electrochemical impedance, which can help to improve the electrochemical properties of the electrode.
引用
收藏
页码：1031 / 1035
页数：5
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