Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 472, Issue 1-2, Pages 55-58Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2008.04.075
Keywords
Lithium-ion battery; Anode; Nano-sized; SnSb alloy; Cycling performance
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Funding
- Xi'an Jiaotong University [090071181]
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Nano-sized SnSb alloy anodes were prepared by reductive co-precipitation method combining with the aging treatment in water bath at 80 degrees C. The microstructure, morphology and electrochemical properties of synthesized SnSb alloy powders were evaluated by X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM) and galvanostatical cycling tests. The results indicated that the cycling performance of SnSb alloy anodes could be improved through reducing particle size. However, the capacity decline was still apparent in every cycle due to the poor reversible process of high voltage reaction. When the cut-off potential was limited between 0.02 and 0.9 V, the volume and structure changes are alleviated effectively and the excellent cycling performance was obtained within 20 cycles. (C) 2008 Elsevier B.V. All rights reserved.
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