Li/SOCl_2电池的交流阻抗研究  

AC impedance study on Li/SOCl_2 cell

作　　者：吴一平[1] 周国定[1] 葛红花[1] 徐茂德[2] 王庆杰[2] 钱顺友[2] 

机构地区：[1]上海电力学院电化学研究室,上海200090 [2]中国航天科工集团公司梅岭化工厂,贵州遵义563003

出　　处：《电池》2006年第3期175-177,共3页Battery Bimonthly

基　　金：国家863计划课题(2001AA602021);中国航天科工集团技术支撑基金项目(2001-HT-SHDL);上海市自然科学基金项目(03ZR14052);上海市教委重点项目(030Z02);上海市重点学科资助(P1304)

摘　　要：用交流阻抗方法研究了Li/SOCl2电池贮存过程中和放电前后锂电极、碳电极和电池的阻抗变化。结果表明,在开路电位下,随贮存时间的增加,锂电极阻抗逐渐增大,约9 d后达到基本稳定,碳电极阻抗大致不变;放电前,锂电极的阻抗约为碳电极的5倍,直接影响着放电性能;贮存12 d的电池以3 mA放电后,锂电极的膜电阻由放电前的413.8Ω减小到5.2Ω,而碳电极的阻抗增大了约1个数量级;放电过程中碳电极阻抗逐渐增大,最终阻止了电池的放电输出。The variation of resistance for Li electrode, carbon electrode and cell in the process of storage, before and after discharge of Li/SOCl2 cell had been studied by AC impedance method. The results showed that in the open circuit condition, with the increase of storage time, the resistance for Li electrode gradually rose and nearly became stable in about 9 d, that for carbon electrode was almost no change. The resistance of Li electrode was 5 times than that of carbon electrode before discharge, directly influenced on the discharge behavior. The film resistance of Li electrode was reduced from 413.8 Ω （before discharge） to 5.2 Ω after the cell （stored 12 d） discharged with 3 mA, but that of carbon electrode increased for about one order of magnitute. During discharge, the resistance of carbon electrode gradually increased and finally prevented the discharge of the cell.

关 键 词：LI/SOCL2电池 交流阻抗 电池放电 

分 类 号：TM912[电气工程—电力电子与电力传动]