增塑剂对聚合物电解质锂离子电池性能的影响  

Influence of Plasticizers on Polymer Electrolyte Lithium Ion Battery

作　　者：唐致远[1] 王占良[1] 薛建军[1] 刘春燕[1] 

机构地区：[1]天津大学化工学院,天津300072

出　　处：《应用化学》2002年第6期560-563,共4页Chinese Journal of Applied Chemistry

摘　　要：测试了几种增塑剂体系对凝胶聚 (偏氟乙烯 -六氟丙烷 )电解质电导率及其温度特性的影响 ,并对钴酸锂和碳纤维在这几种增塑剂中的充放电性能进行了研究 .结果表明 ,室温下含碳酸乙烯酯 -二甲氧基乙烷(EC-DME)的凝胶电解质电导率最高 ,可达到 0 .1 88S/m.钴酸锂在这几种增塑剂中充放电性能相差不大 ,首次放电容量基本在 1 45 m A· h/g左右 .碳纤维在碳酸乙烯酯 -碳酸二乙酯 -碳酸甲乙酯 (EC-DEC-EMC)中性能最好 ,放电容量在 3 0 0 m A· h/g以上 ,首次效率为 95 % .The influences of plasticizers EC(ethylene carbonate), DME(dimethoxy ethane), DEC( diethyl carbonate), EMC(methyl ethyl carbonate) and PC(propylene carbonate) in various combination on the conductivity and performance of gelled polymer electrolytes at different temperatures have been investigated as functions of charge discharge properties of LiCoO 2 and graphitized carbon fiber. The highest conductivity of gel polymer electrolyte was obtained with plasticizers EC DME as 0 188 S/m at room temperature. The first discharge specific capacity of LiCoO 2 with combination plasticizer was about 145 mA·h/g, and the effect of plasticizer is not obvious . The discharge specific capacity of graphitized carbon fiber in EC DEC EMC was 300 mA·h/g , with the initial coulomb efficiency being about 95%.

关 键 词：增塑剂 电池性能 聚合物电解质 锂离子电池 碳纤维 LICOO2 聚(偏氟乙烯-六氟丙烯) 

分 类 号：TM912[电气工程—电力电子与电力传动] TQ414[化学工程]