AB_5型贮氢合金电极充放电过程研究  

Study on the process of charge-discharge of AB_5 type MH electrode

作　　者：王力臻[1] 王树新 李中东 曹银熙 谷书华[1] 朱继涛[1] 

机构地区：[1]郑州轻工业学院材料与化工学院化学电源实验室,河南郑州450002 [2]河南环宇集团,河南新乡453000

出　　处：《电源技术》2006年第9期716-719,共4页Chinese Journal of Power Sources

摘　　要：利用排水集气法、交流阻抗测试技术、充放电曲线研究了AB5贮氢合金电极的充放电过程。结果表明:在实验选择的充放制度下,充电倍率对贮氢电极的充电电位、充电效率及放电倍率对放电性能有明显的影响;在放电过程中,贮氢电极表面电化学反应阻抗随放电深度增加而减小,当放电深度大于80%时电化学反应阻抗又增大。The charge/discharge process of hydrogen storage electrodes was investigated by H2 collection process with displacement, electrochemical impedance spectroscopy （EIS） and by charge/discharge curves. The results showed that charge rate has obvious influence on charge electrode potentials and charge efficiency and discharge rate has obvious effect on discharge performance; electrochemical reaction impedance of the MH electrode decreased with the increase of depth of discharge ,and increased when the DOD was above 80% in discharge process.

关 键 词：贮氢电极 平台压力 充电效率 交流阻抗 

分 类 号：TM912.9[电气工程—电力电子与电力传动]