中国科学院研究生院学报2003，Vol.20Issue(3)：381-387,7.
高功率Ni/MH电池用AB5型负极储氢合金的研究
Study on AB5-Type Hydrogen Storage Alloys for High-Power Nickel-Metal Hydride Batteries
摘要
Abstract
Developing hydrogen storage alloys with high-rate dischareability is the key to extend the application of nickel/metal-hydride (Ni/MH) batteries to high-power fields. Based on the discussion of the thermodynamic and kinetic behaviors, the influence of the microstructure on discharge rate behavior of AB5-type hydrogen storage alloys has been investigated. The results show that the addition of B and Mo can significantly improve the discharge capability at high-rate and also at low temperature due to the introduction of the non-stoichiometry with B/A＞5 and secondary phase with catalytic activity. Again combined with the optimization of the rare earth composition in A side, a kind of MmNi3.55 Co0. 75 Mn0.4 Al0. 3 Bx alloy (Mm: mischmetal) with excellent rate characteristics has been developed. This kind of alloy is promising for Ni/MH batteries in both high power and low temperature (-35℃) applications.关键词
AB5型储氢合金,高倍率放电性能,低温放电性能,微结构,高功率Ni/MH电池Key words
AB5-type hydrogen storage alloy, high-rate discharge capability, low temperatureperformance, microstructure, high-power Ni/MH battery分类
矿业与冶金引用本文复制引用
叶辉,张宏..高功率Ni/MH电池用AB5型负极储氢合金的研究[J].中国科学院研究生院学报,2003,20(3):381-387,7.基金项目
supported by Knowledge Innovation Project of Chinese Academy of Sciences （）
