锂离子电池用SnO_2-聚苯胺复合负极材料的制备与表征  

Synthesis and Characterization of SnO_2-polyaniline Composite as Anode for Lithium Ion Batteries

作　　者：何则强[1] 刘文萍[1] 熊利芝[1] 舒晖[2] 吴显明[1] 陈上[1] 黄可龙[2] 

机构地区：[1]吉首大学化学化工学院,吉首416000 [2]中南大学化学化工学院,长沙410083

出　　处：《无机化学学报》2007年第5期813-816,共4页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金项目(No.20376086);中国博士后科学基金项目(No.2005037700);中南大学博士后科学基金项目(No.2004107)。

摘　　要：以苯胺、过硫酸铵和SnO_2为原料通过微乳液聚合法合成了SnO_2-聚苯胺的复合材料,并通过X-射线衍射、红外吸收光谱、扫描电镜和电化学测试等手段对所得复合材料进行了表征与分析。结果表明,复合材料中的聚苯胺是无定形的,聚苯胺在反应过程中沉积在SnO2颗粒上形成SnO_2被聚苯胺包裹的复合材料。电化学测试说明,该复合材料的首次容量达到657.6mAh·g^(-1),经过80次循环后每次循环的容量衰减率仅为0.092%。The SnO2-polyaniline （SnO2-PAn） composite was prepared by microemulsion polymerization method using aniline, ammonium peroxodisulfate and SnO2 as starting materials. The SnO2-PAn was confirmed by IR, XRD, SEM and electrochemical tests.Results show that PAn in the composites is amorphous. The PAn formed in the reaction is deposited preferentially on the SnO2 particles giving a SnO2-PAn composite,in which the SnO2 is coated with the PAn. SnO2-PAn composite shares reversible capacity of 657.6 mAh·g^-1 and the capacity loss per cycle is only 0.092% after 80 cycles.

关 键 词：SNO2 聚苯胺 锂离子电池 微乳液聚合法 

分 类 号：O611.62[理学—无机化学] O614.432[理学—化学]