Effects of Co, Mn contents on the electrochemical characteristics of the LaNi3.8(CO+Mn)0.96Al0.24 electrodes in potassium hydroxide electrolyte

被引：30

作者：

Chang, JK

Shong, DS

Tsai, WT ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Mat Sci & Engn, Tainan 70101, Taiwan

[2] Gloria Mat Technol Corp, Hydrogen Dev Ctr, Tainan, Taiwan

来源：

JOURNAL OF POWER SOURCES | 2002年 / 103卷 / 02期

关键词：

hydrogen storage alloy; chemical composition; electrochemical characteristics; metal hydride electrodes; cyclic stability;

D O I：

10.1016/S0378-7753(01)00866-7

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effects of Co and Mn contents on the electrochemical characteristics of the LaNi3.8(Co + Mn)(0.96)Al-0.24 electrodes were examined systematically. The lattice cell parameters, discharge characteristics, high-rate charging or discharging performance and cyclic stability of the series of alloys were all evaluated. The experimental results show that Co would play the role of improving the electrochemical capacity and discharge cell voltage. In addition, the cyclic stability of the metal hydride electrodes could be enhanced with increasing the Co content in the alloys. On the other hand, replacing the Co by Mn in the alloys could cause a expansion of the lattice cell volume and assist hydrogen diffusion in the metal hydride electrodes, which subsequently promoted the high-rate charging performance. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：280 / 285

页数：6

共 34 条

[1] CERIUM CONTENT AND CYCLE LIFE OF MULTICOMPONENT AB(5) HYDRIDE ELECTRODES [J].