Microspherical Cu6Sn5 alloy anode for lithium-ion battery

被引:27
作者
Fan, Xiao-Yong [1 ]
Ke, Fu-Sheng [1 ]
Wei, Guo-Zhen [1 ]
Huang, Ling [1 ]
Sun, Shi-Gang [1 ]
机构
[1] Xiamen Univ, Coll Chem & Chem Engn, Dept Chem, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China
关键词
D O I
10.1149/1.2972991
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
A microspherical Cu-Sn alloy was electrodeposited on porous Cu substrate that was fabricated by electrodeposition with hydrogen bubbles as dynamic template and served ultimately as a current collector. The Cu-Sn alloy was determined by X-ray diffraction as an intermetallic composite of Cu6Sn5. Scanning electron microscope images illustrated that the Cu6Sn5 alloy consists in sphere-shaped particles growing on toothed branches of the porous Cu substrate. A galvanostatic charging/discharging test indicated that the microspherical Cu6Sn5 alloy on porous Cu substrate exhibited high first-discharge and -charge capacity, which were determined to be 563 and 493 mAh g(-1), respectively. It has also revealed that the as-prepared electrode displayed a good retention of capacity, and the discharge and charge capacities at the 20th cycle were measured as high as 445 and 407 mAh g(-1). (C) 2008 The Electrochemical Society.
引用
收藏
页码:A195 / A197
页数:3
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