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	Lithiation/delithiation performance of Sn-Co alloy anode using rough Cu foil as current collector
	Fan, Xiao-Yong ; Ke, Fu-Sheng ; Wei, Guo-Zhen ; Huang, Ling ; Huang L(黄令) ; Sun, Shi-Gang ; Sun SG(孙世刚)
	2009
关键词	Lithium-ion battery Sn-Co alloy Rough Cu foil Phase transformation impedance
英文摘要	Sn-Co alloys were electrodeposited on the rough Cu foil and smooth Cu sheet, respectively. The capacity retention of the Sn-Co alloy electrode electrodeposited on the rough Cu foil in the 70th cycle was found to be 80.0% compared with the maximal capacity, which was much better than that of the Sn-Co alloy electrode on the smooth Cu sheet. The revolution of the surface morphology of the Sn-Co alloy electrode during cycling was investigated by scanning electron microscopy. The result indicated that the reversibility of the expansion and contraction of the Sn-Co alloy electrode on the rough Cu foil during charging/discharging assisted by the unique rough surface was one main reason of improving the cycleability. Solid electrolyte interphase (SEI) film was detected on the Sn-Co alloy electrode surface by electrochemical impedance spectroscopy (EIS) during lithiation/delithiation, and the result demonstrated that the SEI film suffered breaking and repairing at different lithiation status. In addition, the unique phase transformation process for the Sn-Co alloy electrode during first lithiation was also investigated by EIS.; Major State Basic Research Development "973" Program of China [2009CB220102]; National Natural Science Foundation of China [20773102]
语种	英语
出版者	SPRINGER
内容类型	期刊论文
源URL	[http://dx.doi.org/doi:10.1007/s10008-008-0738-5]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Fan, Xiao-Yong,Ke, Fu-Sheng,Wei, Guo-Zhen,et al. Lithiation/delithiation performance of Sn-Co alloy anode using rough Cu foil as current collector[J],2009.
APA	Fan, Xiao-Yong.,Ke, Fu-Sheng.,Wei, Guo-Zhen.,Huang, Ling.,黄令.,...&孙世刚.(2009).Lithiation/delithiation performance of Sn-Co alloy anode using rough Cu foil as current collector..
MLA	Fan, Xiao-Yong,et al."Lithiation/delithiation performance of Sn-Co alloy anode using rough Cu foil as current collector".(2009).

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