提高AB_5型贮氢电极合金低温电化学性能研究  

Improvement of the Low Temperature Electrochemical Performance of AB_5-type Hydrogen Storage Alloy

作　　者：叶辉[1] 吴铸[1] 李志林[1] 张宏[1] 

机构地区：[1]中国科学院上海冶金研究所能源室,上海200050

出　　处：《电化学》2002年第4期460-462,共3页Journal of Electrochemistry

摘　　要：采用优化稀土成分并添加适量的硼改善AB5型贮氢合金的低温性能 .实验表明 ,含富Ce稀土及添加适量硼的AB5型合金 ,其低温电化学性能优良 ,能满足Ni/MH电池在低至 - 35℃小倍率电流密度放电的要求 .贮氢合金低温性能的改善与合金的微结构。Optimizing the rare earth composition and doping with boron have been used to improve the low temperature performance of AB 5 hydrogen storage alloy.The results show that Ce-rich alloy with a proper amount of boron is suitable for Ni/MH battery with the lower-limit temperature down to 238 K under smaller current density (120 mA/g). The improvement of low temperature performance of hydrogen storage alloy is well consistent with its microstructure,thermodynamic and kinetic properties.

关 键 词：AB5型贮氢电极合金 电化学性能 低温性能 NI/MH电池 结构 放电 

分 类 号：TM911[电气工程—电力电子与电力传动]