Sn-SnSb/石墨和Sn-SnSb/PAn复合材料的电化学性能  

Electrochemical performance of Sn-SnSb/Graphite and Sn-SnSb/PAn composite materials

作　　者：黄可龙[1] 张戈[1] 刘素琴[1] 龚本利[1] 

机构地区：[1]中南大学化学化工学院,湖南长沙410083

出　　处：《电源技术》2007年第10期790-793,共4页Chinese Journal of Power Sources

基　　金：国家自然科学基金资助项目(50542004);教育部博士点基金资助项目(20030533001)

摘　　要：以柠檬酸钠为络合剂、NaBH4为还原剂,将Sn(II)和Sb(III)盐在水溶液中共还原制得Sn-SnSb合金。将该合金粉分别和石墨、聚苯胺(PAn)按质量比4∶1经机械球磨形成Sn-SnSb/石墨、Sn-SnSb/PAn两种复合材料,并将它们作为锂离子蓄电池阳极材料进行电化学性能测试。结果表明,Sn-SnSb/石墨复合材料可逆比容量超过600mAh/g,而Sn-SnSb/PAn复合材料的可逆比容量也达到542mAh/g。Sn-SnSb/石墨复合材料的循环性能优于Sn-SnSb/PAn复合材料,同时这两种复合材料的循环性能均优于纯Sn-SnSb。Sn-SnSb alloy were synthesized by reducing an aqueous solution containing Sn （Ⅱ） and Sb （Ⅲ） salts with NaBH4 in the presence of sodfum citrate as a complexant. Sn-SnSb/Graphite and Sn-SnSb/PAn composite materials were prepared by mechanical milling and the weight ratio of alloy and graphite,PAn were 4 ： 1, The electrochemical performance of Sn-SnSb/Graphite and Sn-SnSb/PAn composlte materlals were investigated. The results show that the reversible capacity of Sn-SnSb/Graphite exceeded 600 mAh/g and that of Sn-SnSb/PAn is 542 mAh/g, The Sn-SnSb/Graphite had a better cycle performance than Sn-SnSb/PAn, and the cycle performance of the two composite materials were prior to pure Sn-SnSb.

关 键 词：Sn—SnSb/石墨 Sn—SnSb/PAn 复合材料 循环性能 

分 类 号：TM912.9[电气工程—电力电子与电力传动]