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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 19    No. 6    December 2009

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Fabrication of Sn-Ni alloy film anode for Li-ion batteries by electrochemical deposition
ZHANG Da-wei(张大伟)1, 2, 3, YANG Chen-ge(杨晨戈)2, DAI Jun(戴 俊)2,
WEN Jian-wu(温建武)1, WANG Long(汪 龙)1, CHEN Chun-hua(陈春华)1<

1. Department of Materials Science and Engineering, University of Science and Technology of China,
Hefei 230026, China;
2. School of Chemical Engineering, Hefei University of Technology, Hefei 230009, China;
3. Anhui Key Laboratory of Controllable Chemistry Reaction and Material Chemical Engineering,
Hefei University of Technology, Hefei 230009, China

Abstract:Sn-Ni alloy films for Li-ion batteries were fabricated by electrochemical deposition with rough copper foils as current collectors. The influence of electrochemical-deposition temperature and heat treatment were also investigated. By galvanostatic cell cycling the film anodes can deliver a steady specific capacity. The morphological changes cause the differences in capacity retention. After farther heat treatment, the film anodes present a better cycle performance, with a specific capacity of 314 mA∙h/g after 100 cycles. This high capacity retention can be due to its smooth, compact surface formed in the heat treatment process.

 

Key words: electrochemical deposition; Li-ion battery; capacity retention; heat treatment

ISSN 1672-7029
CN 43-1423/U

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