摘要
提出一种用以改善AB5型贮氢电极合金的综合电化学性能的新方法,即采用一定强度的外加磁场对电极进行磁化处理,以期提高电极合金的综合电化学性能.结果表明,外加磁场的磁化处理可以不同程度地改善磁体贮氢电极合金Lb0.9Sm0.1Ni5.0-Coy(y=2.0,2.5,3.0)的电化学容量、循环寿命以及大电流放电能力等电化学性能.磁化处理对电极合金电化学性能的影响还与合金中的Co含量有关.合金中的Co含量增加,磁化处理后电极中存在的剩磁强度随之增强,磁化处理对电极合金电化学性能的影响也更为显著.
A magnetization treatment was proposed firstly to improve the electrochemical properties of hydrogen storage electrode alloy in this paper. The results indicate that through the magnetization treatment, the electrochemical properties of hydrogen storage permanent magnet electrode alloy La0.9Sm0.1 Ni5.0-y Co-y (y = 2.0, 2.5, 3.0), including electrochemical capacity, cycle life and the high-rate dischargeability, can be improved to some extent. Furthermore, the effect of magnetization treatment on its electrochemical properties is related to the content of Co. The more the cobalt content is, the higher the magnetization effect is.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
2001年第1期57-60,共4页
Acta Metallurgica Sinica
基金
国家自然科学基金!59701005
关键词
贮氢合金
氢化物电极
磁化处理
电化学性能
镍氢电池
hydrogen storage alloy La-Sm-Ni-Co
hydride electrode
magnetization treatment
electrochemical property