(1.中国科学院 金属研究所,沈阳 110016;
2. 东北大学 材料与冶金学院, 沈阳 110004)
摘 要: 研究了粉末粒度对AB5型储氢合金电化学性能的影响。结果表明:当合金粉末粒度为22.49~163.8μm时,随粉末粒度的减小,储 氢合金电极的电化学容量降低;由于粉末粒度大的电极负极充放电循环寿命的衰减率小于粉末粒度小的衰减率,所以随粉末粒度的减小,储氢合金电极材料充放电循环寿命缩短。
关键字: 粉末粒度;合金电极;电化学容量;循环寿命
performance for AB5 hydrogen
storage alloys
(1. Institute of Metals Research, The Chinese Academy of Sciences,
Shenyang 110016, China;
2. School of Materials and Metallurgy, Northeast University,
Shenyang 110004, China)
Abstract:Effect of the powder size on electrochemistry performance for AB5 hydrogen storage alloy was studied. The result shows that t he electrochemistry capacity of hydrogen storage alloy electrode reduces with reducing powder size. The chargedischarge cycling life of hydrogen storage alloy electrode curtails with reducing the powder size because attenuation rate for t he charge-discharge cycling life of the bigger powder size is less than that of the smaller one.
Key words: powder size; alloy electrode; electrochemistry capacity; cycling life