The influence of Co and various additives on the performance of MmNi(4.3-x)Mn(0.33)Al(0.4)Co(x) hydrogen storage alloys and Ni/MH prismatic sealed cells

被引:60
|
作者
Cocciantelli, JM [1 ]
Bernard, P [1 ]
Fernandez, S [1 ]
Atkin, J [1 ]
机构
[1] SAFT RES,F-91460 MARCOUSSIS,FRANCE
关键词
metal-hydride batteries; AB(5) alloy Co content; cycle life; Al effect on the (+) electrode;
D O I
10.1016/S0925-8388(96)02978-7
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
MmNi(5) substituted alloys with Mn, Al and Co were studied as active materials for (-) electrodes in Ni/MH prismatic sealed cells for electric vehicles. In order to reduce the alloy cost, the influence of Co content was studied from 10-5% by weight in the AB(5). As Co content is reduced, decrepitation and alloy corrosion are higher. Particularly, we showed how Al released by the corroded alloy polluted the (+) electrodes in the cell. Substitution of Co by Fe allows cost reduction without affecting Ni/MH cell performances and this behaviour is attributed to less decrepitation.
引用
收藏
页码:642 / 647
页数:6
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