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 褚嘉宜 翟玉春 田彦文 

机构地区：[1]东北大学材料与冶金学院

出　　处：《东北师大学报（自然科学版）》2004年第4期66-70,共5页Journal of Northeast Normal University(Natural Science Edition)

基　　金：国家重点基础研究发展规划资助项目(G19904690-1);沈阳市科技基金资助项目(102241-06).

摘　　要：　采用共沉淀法制备了SnFeO2.5和SnPbO2两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在26°～28°处都有波峰,属无定形结构;SEM的形貌观察发现SnFeO2.5颗粒分层紧密堆积、团聚在一起,SnPbO2颗粒为棱柱状、表面光滑.将其分别作为Li+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,发现这两种锡基复合氧化物都有较高的电化学容量.The two tin-compounded oxide powders, SnFeO_(2.5) and SnPbO_2, were prepared by co-precipitation. It is shown by XRD analysis that the two tin-compounded oxides have wave crest between 26°～28° in character belonging to amorphous structure. It can be observed from the shape of SEM that SnFeO_(2.5) particles accumulate close on separation and SnPbO_2 particle is prism. They were used as anode materials for lithium ion batteries respectively, and their electrochemical properties were tested using constant electric current cell tester. Proved by experiments, the two tin-compounded oxides have high electrochemical capacities.

关 键 词：复合氧化物 负极材料 Li+电池 充电容量 放电容量 不可逆容量 

分 类 号：TM911.11[电气工程—电力电子与电力传动]