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Three-dimensional porous copper-tin alloy electrodes for rechargeable lithium batteries

Author(s)
Shin, HeoncheolLiu, Meilin
Issued Date
2005-04
DOI
10.1002/adfm.200305165
URI
https://scholarworks.unist.ac.kr/handle/201301/5762
Fulltext
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=17144401071
Citation
ADVANCED FUNCTIONAL MATERIALS, v.15, no.4, pp.582 - 586
Abstract
Three-dimensional (3D) foam structure of a Cu 6Sn 5 alloy was fabricated via an electrochemical deposition process. The walls of the foam structure are highly porous and consist of numerous small grains. When used as a negative electrode for a rechargeable lithium battery, the Cu 6Sn 5 samples delivered a reversible capacity of about 400 mA hg -1 up to 30 cycles. Further, these materials exhibit superior rate capability, attributed primarily to the unique porous structure and the large surface area for fast mass transport and rapid surface reactions. For instance, at a current drain of 10 mA cm -2 (20C rate), the obtainable capacity (220 mA hg -1) was more than 50 % of the capacity at 0.5 mA cm -2 (1C rate).
Publisher
WILEY-V C H VERLAG GMBH
ISSN
1616-301X
Keyword
LI-ION BATTERIESX-RAY-DIFFRACTIONNEGATIVE ELECTRODESINSERTION ELECTRODEANODESETA&apos-CU6SN5COMPOSITESETA-CU6SN5FILM

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