电解液添加剂对可充碱锰电池负极电化学性能的影响  

Effects of Additive on the Electrochemical Performances of Zinc Electrode for Rechargeable Alkaline Zinc-Manganese Battery

作　　者：艾娟[1] 徐徽[1] 邓新荣[1] 侯立松[1] 

机构地区：[1]中南大学冶金物理化学与材料化学研究所,中国长沙410083

出　　处：《湖南师范大学自然科学学报》2002年第4期45-49,共5页Journal of Natural Science of Hunan Normal University

基　　金：湖南省企业重点技术创新项目资助(2001339)

摘　　要：除了正极改性掺杂以提高MnO2的可逆性外,制备无汞可充碱性锌锰电池的另一个技术关键就是如何降低负极锌膏的自腐蚀,抑制充电时负极枝晶的出现.通过析氢实验、短路实验以及循环伏安实验,探讨在电解液中加入三乙醇胺(TEA)等添加剂对负极锌膏电化学性能的影响效果.实验结果表明,电解液中加入0.1%的三乙醇胺(TEA)可明显降低负极锌膏的析气量,同时可抑制枝晶生长,显著提高电池的循环寿命.同时从理论上分析和探讨了三乙醇胺(TEA)的作用机理.How to reduce the zinc electrode's corrosion and inhibit dendrite formation during the charging is a key technology for preparing mercury-free rechargeable alkaline zinc-manganese battery, except for modified manganese dioxide to improve its reversibility. The effects of triethanolamine (TEA) as an additive in electrolyte on the electrochemical performances of zinc electrode is investigated, through the hydrogen collection experiment, short circuit experiment and cyclic voltammetry method. The result shows that the rechargeability of the alkaline zinc-manganese battery with 0.1% triethanolamine (TEA) in electrolyte is improved obviously. The mechanism of triethanolamine (TEA) is also analyzed and discussed.

关 键 词：电解液添加剂 负极 可充碱锰电极 锌电极 三乙醇胺 电化学性能 循环寿命 

分 类 号：TM912.2[电气工程—电力电子与电力传动]