聚吡咯电导率对锂／聚吡咯二次电池性能的影响  

Research of conductivity of polypyrrole on properties of Li/ppy secondary battery

作　　者：任丽[1] 张雪峰[1] 王立新[1] 张福强[1] 

机构地区：[1]河北工业大学化工学院高分子材料研究所,天津300130

出　　处：《功能材料》2007年第A04期1459-1460,共2页Journal of Functional Materials

基　　金：基金项目：河北省自然科学基金项目（E2007000066）;河北省科技厅博士基金（05547003D-4）;河北省教育厅科研计划项目（2005356）.

摘　　要：以化学氧化法制备导电聚吡咯，以其作正极，组装成锂／聚吡咯二次电池并测试其电化学性能，重点讨论聚吡咯电导率对电池性能的影响。结果表明，正极电导率高的电池平均放电比容量高且循环平稳：电导率高可以使充放电时阴离子的掺杂和脱掺杂变得容易，电荷储存能力强，电池比容量高；电化学稳定性和可逆性好，50次循环后，电池的库仑效率仍达99．2％。Polypyrrole was synthesized by chemical oxidative polymerization, Then the cells were made by using polypyrrole as anode and the electrochemical properties were tested. The influence of conductivity of polypyrrole on properties of Li/PPy secondary battery was mainly studied. The results showed when using high conductivity PPy, the doping-undoping of the anions was easy and the discharge capacity of the cell was high, after fifty cycles the coulombic efficiency was 99.2%, the electrochemical stability and cycling ProPerty were still good.

关 键 词：聚吡咯 化学氧化法 电导率 锂二次电池 

分 类 号：O631.2[理学—高分子化学]