炭黑吸附聚合制备聚吡咯/炭黑导电复合材料  

PREPARATION OF POLYPYRROLE/CARBON BLACK CONDUCTING COMPOSITES BY ADSORPTION POLYMERIZATION

作　　者：朱嫦娥[1] 任丽[1] 王立新[1] 安灏瑗[1] 

机构地区：[1]河北工业大学高分子材料科学与工程研究所,天津300130

出　　处：《复合材料学报》2005年第3期45-48,共4页Acta Materiae Compositae Sinica

基　　金：天津市自然科学基金重点资助项目(023802411)

摘　　要：用炭黑吸附化学氧化聚合法制备聚吡咯/炭黑(PPy/C)导电复合材料。运用FTIR、TGA、SEM、四探针和电化学测试仪对材料的组成、结构和性能进行了测试和表征。导电炭黑的加入不仅提高了材料的电导率,由原来的6.52S/cm增加至13.42S/cm,而且提高了材料的堆积密度,改善了聚吡咯的颗粒形态和制膜加工性能,聚吡咯复合材料为正极的锂/聚吡咯二次电池的性能得以改善,室温下充放电循环30次以上,电池容量无明显衰减,库仑效率在98%以上,首次放电容量以聚吡咯计可达41mAh/g。Polypyrrole/carbon black conducting composites were prepared by chemical polymerization adsorbed polypyrrole onto conducting carbon black. The constitution, structure and performances of the composites were studied and characterized by FT-IR, TGA, SEM, four-probe and electrochemical test measurements. The introduction of conducting carbon black not only increases the conductivity from 6.52 S/cm to 13.42 S/cm but also improves the bulk density, particle morphology and the film molding property of the composites. Consequently the performances of Li/PPy secondary battery are enhanced when the composites are employed as positive electrode materials. It was found that the initial specific discharge capacity of the battery reaches 41 mAh/g calculated by PPy, and the discharge capacity shows a slight decrease and the coulombic efficiency is still over 98% after 30 charge-discharge cycles at room temperature.

关 键 词：导电炭黑 聚吡咯 吸附聚合 堆积密度 二次电池 

分 类 号：TB332[一般工业技术—材料科学与工程]