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Citation: FAN Xiao-Yong, ZHUANG Quan-Chao, JIANG Hong-Hong, HUANG Ling, DONG Quan-Feng, SUN Shi-Gang. Three-dimensional Porous Cu₆Sn₅ Alloy Anodes for Lithium-ion Batteries[J]. Acta Physico-Chimica Sinica, ;2007, 23(07): 973-977. doi: 10.1016/S1872-1508(07)60051-5 shu

Three-dimensional Porous Cu₆Sn₅ Alloy Anodes for Lithium-ion Batteries

1.
State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian Province, P. R. China; Powerlong Battery Research Institute, Xiamen University, Xiamen 361005, Fujian Province, P. R. China

Received Date: 24 January 2007
Available Online: 8 May 2007

Three-dimensional porous Cu6Sn5 alloy electrodes were prepared by electroplating using copper foam as current collector. The micro-holes and small islands on surface of the Cu6Sn5 alloy increased largely the surface area of the electrode, and improved significantly the ability of the electrode in buffering the volume change in process of charge/discharge when the Cu6Sn5 alloy was employed as anode in a lithium-ion battery. Galvonostatic charging/discharging results demonstrated that the initial discharge (lithiation) and charge (delithiation) specific capacities of the Cu6Sn5 alloy electrode were 620 mAh·g-1 and 560 mAh·g-1, respectively. It demonstrated that the Cu6Sn5 alloy electrode exhibited a large initial coulomb efficiency (90.3%) and od capacity retention. SEM (scanning electron microscope) results illustrated that the Cu6Sn5 alloy deposited on copper foam substrate was more stable than that on a conventional copper substrate, and displayed no obvious exfoliation after 50 charge/discharge cycles.
- Copper foam; Electroplating; Cu6Sn5; Three-dimensional porous structure
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沈阳化工大学材料科学与工程学院沈阳 110142

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Three-dimensional Porous Cu6Sn5 Alloy Anodes for Lithium-ion Batteries

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通讯作者: 陈斌, bchen63@163.com

Three-dimensional Porous Cu₆Sn₅ Alloy Anodes for Lithium-ion Batteries