二次锂电池碳硫聚合物正极材料的制备及性能研究  

Synthesis and performance of carbon-sulfur polymers as anode material for lithium battery

作　　者：吕静[1] 胡亚伟[1] 张贺[1] 齐广辉[1] 李琰[1] 

机构地区：[1]河北化工医药职业技术学院,石家庄050026

出　　处：《化工新型材料》2014年第10期67-69,共3页New Chemical Materials

基　　金：河北省科学技术研究与发展计划(11215173);河北化工医药职业技术学院院级课题(YZ201404)

摘　　要：采用一步法、两步法制备了新型二次锂电池碳硫聚合物正极材料,利用红外光谱(IR),拉曼光谱(Raman),扫描电镜(SEM)等手段对样品的结构、形貌、性质进行了研究与比较。结合样品的电化学性能,结果表明采用两步法制得的样品具有良好的电性能,0.4mAh/g放电,首放容量为600mAh/g,充放电循环20次后,放电比容量保持在400mAh/g,从第2次循环开始容量保持率超过95%,效率始终维持在100%左右。The anode materials were synthesized by two-step method. The crystalline structures,morphology of particles and spectroscopic characters were investigated by IR,Raman and SEM. The electrochemical testing indicated that the initial capacities of the sample at optimum condilions was 600mAh/g,and the residual capacity was 400mAh/g after 20 cy- cles. The capacity retention was 95 % from the second cycle,the efficiencies were almost 100%.

关 键 词：锂电池 正极材料 碳硫聚合物 

分 类 号：TM912[电气工程—电力电子与电力传动]