提高锂空气电池的放电性能  

The improvement of discharge performance of Li-air battery

作　　者：康亚楠[1] 谢晓华[1,2] 张建[1] 娄豫皖[1,2] 

机构地区：[1]中国科学院上海微系统与信息技术研究所,上海200050 [2]上海万宏动力能源有限公司,上海201807

出　　处：《电池》2012年第4期200-202,共3页Battery Bimonthly

基　　金：上海市"科技创新行动计划"重点科技项目(10511502500);中国科学院预研支撑项目(61501070105)

摘　　要：研究了在相对湿度为30%的空气中工作的有机电解液锂空气电池,用恒流放电、交流阻抗、XRD和SEM测试研究放电性能、阻抗及空气电极表面产物的特性。电解液挥发导致的电荷转移阻抗增加,是电池放电终止的主要原因。在空气电极外侧添加防水透氧膜和改善电解液组成后,电池的0.1 mA/cm2恒流放电时间可达438 h,放电比容量为4 867 mAh/g碳。Discharge performance of Li-air battery with organic electrolyte operated in air with RH = 30% was studied. Galvanos- tatic discharge,A. C.impendence, XRD and SEM were used to study the discharge performance, resistance and characteristics of discharge product. The battery reached its discharge end due to increase of charge transfer resistance caused by volatilization of the electrolyte. By using waterproof breathable film and optimization of electrolyte, the 0.1 mA/cm2 galvanostatic discharge time could reach to 438 h, the specific discharge capacity was 4 867 mAh/gcarbon.

关 键 词：锂空气电池 电解液 放电性能 

分 类 号：TM911.41[电气工程—电力电子与电力传动]