新型锂蓄电池正极含硫复合材料的研究  

A novel S-containing composite material for the cathodes of lithium batteries

作　　者：李颖[1] 付逊[1] 胡广侠[1] 谢晓华 解晶莹[1] 

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]哈尔滨工程大学化学工程系,黑龙江哈尔滨150001

出　　处：《电源技术》2004年第5期261-263,共3页Chinese Journal of Power Sources

摘　　要：采用聚丙烯腈与单质硫在一定条件下合成了一种新型含硫复合材料。用该材料作为活性物质制备的锂蓄电池正极具有高的质量比容量和良好的循环性能。还通过对该复合材料的结构表征初步推测,该复合材料含有硫醇基,由硫-硫键断裂和键合实现能量释放与存储。A novel S-containing polymer for the active composite material of cathode of the lithium ion battery was synthesized by heating polyacrylonitrile and elemental sulfur in certain conditions. The cathode made by S-containing composite material shows a high initial specific charge-discharge capacity with 800 mAh/g and good cycle ability. From the structural characteri-zation, it is deduced that this composite material includes a polymer with mercaptan attaching to the main carbon chain.

关 键 词：锂蓄电池 正极 含硫复合材料 电化学反应 循环性能 

分 类 号：TM912.2[电气工程—电力电子与电力传动]