锌镍蓄电池负极集流体的研制  

R & D of current collector of negative electrode for zinc-nickel secondary battery

作　　者：杨恩东[1] 杨化滨[1] 冀惊涛[1] 孙华[1] 王晓丹[1] 周作祥[1] 袁华堂[1] 

机构地区：[1]南开大学新能源材料化学研究所,天津300071

出　　处：《电源技术》2003年第1期31-35,共5页Chinese Journal of Power Sources

基　　金：国家自然科学基金项目(59901005);天津市自然科学基金重点项目(013802611)

摘　　要：采用恒电位极化曲线法研究了以各种金属单质和铜锌合金(黄铜)为集流体的锌电极的性能,发现黄铜集流体在自身腐蚀电位、析氢过电位、腐蚀电流密度、Tafel斜率ba、致钝电位φp和维钝电流密度等性质上都与银相近,是一种各项性能均衡,综合性能较好的锌电极集流体。采用泡沫塑料化学镀铜,再合金电镀铜的方法成功制备出泡沫黄铜,该集流体能在一定程度上避免产生锌酸盐溶液过饱和现象,改善锌电极的充放电性能,抑制锌枝晶生长和提高充放电循环寿命。The properties of zinc electrodes using various metals and CuZn alloy (brass) as current collectors were studied by potentiostatic polarization method. The results show that brass, which has even properties and good combination property, is a good current collector for zinc electrode because its properties, such as selfcorrosion potential, overpotential of hydrogen evolution, corrosion current density, Tafel elope ba, passivation potential φp and passivation current density, are similar to those of silver. Foamed brass was prepared by chemical plating Cu on the surface of foamed plastic and then alloy electroplating brass. The material, as a current collector, can avoid the oversaturation of zincate solution, inhibit the growth of zinc dentrite, improve the charge/discharge performance, and increase the cycle life of zinc electrode.

关 键 词：锌镍蓄电池 负极 集流体 恒电位极化曲线法 锋电极 

分 类 号：TM912.2[电气工程—电力电子与电力传动]