锂离子电池锡基复合氧化物负极材料的研究  

Study on the tin-based composite oxide as anode materials for lithium ion batteries

作　　者：吕成学[1] 褚嘉宜[1] 翟玉春[1] 田彦文[1] 

机构地区：[1]东北大学材料与冶金学院

出　　处：《分子科学学报》2004年第4期31-34,共4页Journal of Molecular Science

基　　金：国家重点基础研究发展规划资助项目(G199904690-1);沈阳市科技基金资助项目(102241-1-06)

摘　　要：　采用共沉淀法制备了SnSbO2.5和SnGeO3两种锡基复合氧化物粉末.XRD分析表明,这两种锡基复合氧化物的共同特点是在27°～28°处有波峰,属无定型结构.将其分别作为锂离子电池负极材料的活性物质,利用恒电流电池测试仪研究它们的电化学性能.实验表明,这两种锡基复合氧化物都有较高的电化学容量,SnSbO2.5的可逆容量为1200mA·h/g,SnGeO3的可逆容量为750mA·h/g.这两种锡基复合氧化物的电化学容量远高于碳材料(石墨的理论容量为372mA·h/g),因此,这两种锡基复合氧化物可以作为锂离子电池负极材料的候选材料.The two tin-compounded oxide powders, SnSbO_(2.5) and SnGeO_3, were prepared by co-precipitation. It is testified by XRD analysis that the two tin-compounded oxides have wave crest between 27°～28° in character belonging to amorphous structure. They were used as anode materials for lithium ion batteries respectively, and their electrochemical properties were studied using constant electric current cell tester. Proved by experiments, the two tin-compounded oxides have high electrochemical capacities, the reversible capacities of SnSbO_(2.5) are about 1　200　mA·h/g and the reversible capacities of SnGeO_3 are about 750　mA·h/g. They are far more than carbon materials. Therefore, the two tin-compounded oxides can be considered as a candidater for the anode materials of lithium ion batteries.

关 键 词：锡基复合氧化物 负极材料 锂离子电池 可逆容量 电化学性能 电化学容量 碳材料 恒电流 XRD分析 共沉淀法 

分 类 号：O413.1[理学—理论物理] TM912.2[理学—物理]