A study of Zn4Sb3 as a negative electrode for secondary lithium cells

被引:56
作者
Zhao, XB [1 ]
Cao, GS [1 ]
机构
[1] Zhejiang Univ, Dept Mat Sci & Engn, Hangzhou 310027, Peoples R China
基金
中国国家自然科学基金;
关键词
lithium-ion battery; Zn4Sb3; Li3Sb;
D O I
10.1016/S0013-4686(00)00669-1
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Antimony zinc alloy, Zn4Sb3, was studied as a potential material for negative electrodes of lithium-ion batteries. It was found that the reversible capacity of ball-milled Zn4Sb3 in the first cycle reached 507 mA h g(-1) and increased up to 580 mA h g(-1) when the alloy was ball-milled with about 11.8 wt.% graphite additives. Ex-situ XRD analyses of the pure Zn4Sb3 electrodes during cycling showed that several lithium-containing compounds such as LiZnSb, Li3Sb and LiZn have been formed successively during the insertion of lithium into Zn4Sb3. It was found that the ball-milled composite, Zn4Sb3/C-7, possesses high initial reversible capacity, small voltage hysteresis and good capacity retention, which make this material an interesting potential electrode for lithium-ion batteries. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:891 / 896
页数:6
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