锂离子电池锡氧化物基负极材料的湿化学合成与电化学性质  

Wet Chemical Synthesis and Electrochemical Properties of Tin Oxide-based Materials as Negative Electrodes for Lithium Ion Batteries

作　　者：何则强[1] 李新海[2] 熊利芝[1] 吴显明[1] 肖卓炳[1] 麻明友[1] 

机构地区：[1]吉首大学化学化工学院,吉首416000 [2]中南大学冶金科学与工程学院,长沙410083

出　　处：《无机化学学报》2005年第2期176-180,共5页Chinese Journal of Inorganic Chemistry

基　　金：湖南省教育厅优秀青年项目(No.04B016);湖南省自然科学基金项目(No.03JJY6005)资助

摘　　要：采用新兴的湿化学方法合成了锡氧化物基粉末材料。用X-射线衍射、扫描电镜和电化学方法对材料的微观结构、形貌和电化学性能进行了详细的研究。结果表明,经400℃热处理4h的锡氧化物基材料的颗粒大小均匀,平均粒径约为200nm。这种材料的可逆充电容量超过570mAh·g-1,30次循环后平均每次循环的容量衰减只有0.15%。良好的电化学性能表明锡氧化物基材料有望作为新一代锂离子电池的负极材料。Wet chemical method was used to synthesize tin oxide-based powders. The microstructure, morphology, and electrochemical performance of the materials were investigated by X-ray diffraction, scanning electron microscopy and electrochemical methods. Results show that the powders of tin oxide-based materials with average size around 200 nm can be obtained by heating precursor at 400 degreesC for 4 hours. The tin oxide-based materials derived from wet chemical method deliver a charge capacity of more than 570 mAh . g(-1). The capacity loss per cycle is about 0.15% after being cycled 30 times.

关 键 词：负极材料 锂离子电池 电化学性能 湿化学合成 充电容量 容量衰减 均匀 氧化物 基材 平均粒径 

分 类 号：O151.21[理学—数学] TM912[理学—基础数学]