锂离子电池锡氧化物基负极材料的软化学合成  

Soft Chemical Synthesis of Tin Oxide-Based Cathode Materials for Lithium Ion Batteries

作　　者：熊利芝[1] 侯慧 

机构地区：[1]吉首大学化学化工学院,湖南吉首416000 [2]湘西自治州民族中学,湖南吉首416000

出　　处：《吉首大学学报（自然科学版）》2004年第4期58-61,共4页Journal of Jishou University(Natural Sciences Edition)

基　　金：湖南省教育厅优秀青年资助项目(04B016);湖南省自然科学基金资助项目(03JJY6005)

摘　　要：采用新兴的软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研究.结果表明:锡氧化物基材料的颗粒的平均粒径约为200nm,颗粒之间形成了类似中孔材料的相互连接的网状结构.这种材料的可逆充电容量超过570mAh/g,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.Novel soft chemical approach was developed 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 in detail.The particles of tin oxide-based materials form an interconnected network structure like mesoporous material.The average size of the particles is about 200 nm.The materials deliver a charge capacity of more than 570 mAh/g.The capacity loss per cycle is about 0.15% after being cycled 30 times.The good electrochemical performance indicates that tin oxide-based materials are promising cathode for lithium ion batteries.

关 键 词：负极材料 锂离子电池 电化学性能 充电容量 容量衰减 氧化物 粉末材料 基材 平均粒径 中孔材料 

分 类 号：TM912[电气工程—电力电子与电力传动] TM911