固相反应法制备Sn-SnO-Zn纳米负极材料  

Nano Sn-SnO-Zn anode material synthesized by solid state reaction

作　　者：梁英[1] 范晶[1] 贾志杰[1] 

机构地区：[1]华中师范大学纳米科技中心,湖北武汉430079

出　　处：《电池》2007年第4期260-262,共3页Battery Bimonthly

基　　金：湖北省武汉市纳米专项资金资助重大项目(20041003068-09)

摘　　要：用固相反应法合成了纳米尺寸的Sn-SnO-Zn复合氧化物粉末,研究了其作为锂离子电池负极材料的电化学性能。XRD、SEM及电化学性能测试的结果显示:在800℃下焙烧的样品,首次放电比容量为772 mAh/g,首次库仑效率为60.1%,经20次循环后,放电比容量为376 mAh/g;在600℃下焙烧的样品,首次放电比容量为641 mAh/g,首次库仑效率为49.4%,经20次循环后,放电比容量只有272 mAh/g。Nano Sn-SnO-Zn composite oxide powder was synthesized by solid state reaction, its electrochemical performance as anode material for Li-ion battery was studied. The results of XRD, SEM and electrochemical performance tests showed that the initial specific discharge capacity of the sample which sintered at 800 ℃ was 772 mAh/g, the initial coulombic efficiency was 60.1%, the specific discharge capacity was 376 mAh/g after 20 cycles; the initial specific discharge capacity of the sample which sintered at 600 ℃was 641 mAh/g, the initial coulombic efficiency was 49.4%, the specific discharge capacity had only 272 mAh/ g after 20 cycles.

关 键 词：锂离子电池 负极材料 固相反应 锡基复合物 

分 类 号：TM910.4[电气工程—电力电子与电力传动]