锂离子电池氧化物负极材料的研究  

Study on the Oxide as Anode Material 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,辽宁沈阳110004

出　　处：《东北工学院学报》2004年第6期567-569,共3页

基　　金：国家重点基础研究发展规划项目(G199904690 1);沈阳市科技基金资助项目(030241)

摘　　要：采用氨解法制备了SnO,Sb2O3,GeO23种氧化物粉末,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其电化学性能·研究发现,这3种活性物质有较高的电化学容量,其首次放电容量分别为1520mAh/g(GeO2),820mAh/g(Sb2O3),1040mAh/g(SnO);首次充电容量分别为800mAh/g(GeO2),520mAh/g(Sb2O3),800mAh/g(SnO)·同时还发现其不可逆容量损失也较大,讨论了产生这一结果的可能原因,提出了减少不可逆容量损失的办法·Three powdered materials, SnO, Sb_2O_3 and GeO_2, were prepared by aminolysis, and any of them was used as an active material for the anode of lithium-ion cells. Using a constant-current cell tester to measure their electrochemical properties, the results show that their initial discharge capacities are 1520,820 and 1040mA·h/g and initial charge capacities are 800,520 and 800mA·h/g for GeO_2, Sb_2O_3 and SnO, respectively. Both are high. On the other hand, their irreversible capacities were also found high.

关 键 词：锂离子电池 氧化物 负极材料 充电容量 放电容量 不可逆容量 循环 

分 类 号：TM911.14[电气工程—电力电子与电力传动]