电化学沉积对贮氢电极动力学特性的影响  

Effects of electrodeposition on the kinetic performance of hydrogen storage electrode

作　　者：夏同驰[1] 董会超[1] 朱冬梅[1] 王本伟[1] 杜国璋[1] 

机构地区：[1]郑州轻工业学院材料与化学工程学院,河南郑州450002

出　　处：《郑州轻工业学院学报（自然科学版）》2008年第2期1-3,39,共4页Journal of Zhengzhou University of Light Industry:Natural Science

基　　金：河南省科技攻关项目(0224380001);郑州轻工业学院科研基金项目(2006XJ02)

摘　　要：采用电化学沉积镍的方法对贮氢合金电极进行了表面修饰,并对贮氢电极动力学性能进行研究.结果表明,电极表面电化学沉积镍后,提高了氢在贮氢合金中的扩散系数和交换电流密度,降低了电化学反应阻抗和接触电阻,从而明显降低了放电过程中的极化作用,提高了贮氢电极的倍率放电性能.The surface of hydrogen storage alloy electrode was treated by performance of MH electrode was investigated. The results showed that and exchange current density of MH electrode were obviously increased nickel electrodeposition. Kinetics the hydrogen diffusion coefficient after nickel electroplating on MH electrode, and the electrochemical reaction impedance and contact impedance were decreased at the same time, so the polarization was depressed and rate discharge performance of MH was improved obviously during the discharge process.

关 键 词：电化学修饰 贮氢电极 动力学性能 放电性能 

分 类 号：TM912.2[电气工程—电力电子与电力传动]