Eletrode characteristics of MmNi5-type alloys for nickel-metal hydride batteries

被引：0
|
作者：
Geng, Mingming [1 ]
机构：
[1] Central Iron & Steel Research, Inst. M.M.I., Beijing, China
来源：
Journal of Rare Earths | 1994年 / 12卷 / 01期
关键词：
Hydrogen storage alloy - Nickel metal hydride battery;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Negative electrodes of the nickel-metal hydride battery were made from hydrogen storage alloy Mm0.9Ni3.9Mn0.4Co0.4Al0.3 modified by coating with nickel and mixing with cobalt powder. When the 10wt% cobalt powder was mixed with this alloy, the discharge capacity increased from 262mAh/g to 300mAh/g at 300K. When the alloy was coated with 11wt% nickel and mixed with 10wt% cobalt powder, the discharge capacity decay for a sealed cell (AA size, 1 Ah) was only about 4% after 200 cycles.
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页码：71 / 74
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