改性电极复合材料的导电性和电化学性能  

Resisitivity and Electrochemical Property of Modified Composite Electrode for Vanadium Redox Battery

作　　者：罗冬梅[1] 许茜[1] 康晓雪[1] 李彦丹[1] 隋智通[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004

出　　处：《过程工程学报》2005年第4期455-459,共5页The Chinese Journal of Process Engineering

基　　金：辽宁省自然科学基金资助项目(编号:99106003);国家教育部留学回国人员启动基金资助项目

摘　　要：采用不同方式在钒电池电极复合材料中加入钛酸酯偶联剂进行改性,研究了改性复合材料的导电性和在钒电池电解液中的电化学性能.结果表明,煤油作为偶联剂溶剂在一定范围内可使复合材料电阻率有明显下降;加入偶联剂的复合材料电极在钒电池电极反应中可能会伴有少量的电池副反应.通过SEM分析了复合材料的微观结构.The composite electrode used in the vanadium redox battery was modified by adding titanate coupling agent in three ways： direct mixing with carbon-black, dissolving and mixing in ethanol, and dissolving in kerosene. The effect of titanate coupling agent on the resisitivity and electrochemical property of composite electrode was tested. It was observed that titanate coupling agent and carbon-black could not be mixed up uniformly neither by direct mixing nor by dissolving in ethanol. The results showed that the resistivity of composite electrode was reduced by adding titanate coupling agent dissolved in kerosene. This phenomenon was explained with the SEM microphotographs of the composite. The cyclic voltammograms of composite electrode demonstrate that titanate coupling agent in the composite electrode may introduce minor side-reaction in the electrode in vanadium redox battery.

关 键 词：钒电池 钛酸酯偶联剂 复合材料 电极 导电性 电化学性能 

分 类 号：TM912.2[电气工程—电力电子与电力传动]