液流电池正极活性物质钛铁试剂初探  

Primary Study of Tiron as Active Materials for the Redox Flow Battery

作　　者：徐艳[1] 文越华[1] 程杰[1] 杨裕生[1] 谢自立[1] 

机构地区：[1]防化研究院,北京100083

出　　处：《电化学》2008年第4期355-357,共3页Journal of Electrochemistry

基　　金：国家973计划(大规模非并网风电系统的基础研究;2007CB210307);国家863基金项目(2005AA516020)资助

摘　　要：应用循环伏安法研究钛铁试剂(4,5-二羟基-1,3-苯二磺酸钠)电对(石墨基底)在水溶液中的电化学行为.实验表明,溶液pH<4时,该试剂的氧化还原反应电位较高,可逆性好.以其作正极与V(III)/V(II)负极组成液流电池,在硫酸介质中,充放电库仑效率可达90%以上,而且循环寿命较好,性能衰减小,具备作为液流电池正极活性物质的可行性.Effects of solution pH on the electrochemical behavior of tiron （sodium 4, 5-dihydroxy-1, 3- benzendisulfonic） couple （on a graphite electrode） were studied by cyclic voltammetry in aqueous solutions. It is shown that at pH 〈 4, tiron exhibited a redox process at a relatively high potential with a good reversibility. A redox flow battery was formed employing tiron as the positive active species and V （Ⅲ）/V （Ⅱ） as the negative redox couple. In sulfuric acid medium, the coulombic efficiency of the tiron-V redox flow cell was more than 90% with a good cycle life. The decay in the cycle performance was minimal. Therefore, the feasibility of tiron as active materials for redox flow battery application is demonstrated.

关 键 词：钛铁试剂 液流电池 循环伏安 充放电性能 

分 类 号：TM911[电气工程—电力电子与电力传动]