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	Lithium storage performance and interfacial processes of three dimensional porous Sn-Co alloy electrodes for lithium-ion batteries
	Xue, Lian-Jie ; Xu, Yue-Feng ; Huang, Ling ; Huang L(黄令) ; Ke, Fu-Sheng ; He, Yang ; Wang, Yun-Xiao ; Wei, Guo-Zhen ; Li, Jun-Tao ; Li JT(李君涛) ; Sun, Shi-Gang ; Sun SG(孙世刚)
	2011-05-06
关键词	Porous Cu current collector Lithium ion batteries Sn-Co alloy electrode Anode Electrochemical impedance spectroscopy
英文摘要	Three-dimensional porous Cu film is prepared for the first time by electroless plating. Sn-Co alloy is electrodeposited on the porous Cu film to fabricate porous Sn-Co alloy electrode. SEM images evidence that porous Sn-Co alloy electrode presents a three-dimensional porous structure. XRD results show that the Sn-Co alloy electrode comprises pure Sn and CoSn(2) phases. Electrochemical discharge/charge results show that the three-dimensional porous Sn-Co alloy electrode exhibits much better cycleability than planar Sn-Co alloy electrode, with first discharge capacity and charge capacity of 636.3 and 528.7 mAh g(-1), respectively. After 70th cycling, capacity retention is 83.1% with 529.5 mAh g(-1). The lithiation and delithiation processes during first discharge and charge were investigated by electrochemical impedance spectroscopy (EIS). EIS results together with differential capacity curves describe the process of SEI formation, charge transfer and phase transformation in the alloy electrode in the first discharge. and phase transformation during charge at delithiation potential. (C) 2011 Elsevier Ltd. All rights reserved.; NSFC[20773102, 2093110426, 21003102, 21021002, 20833005]; "973" program[209CB220102]; NFFTBS[J1030415]
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
内容类型	期刊论文
源URL	[http://dx.doi.org/doi:10.1016/j.electacta.2011.04.103]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Xue, Lian-Jie,Xu, Yue-Feng,Huang, Ling,et al. Lithium storage performance and interfacial processes of three dimensional porous Sn-Co alloy electrodes for lithium-ion batteries[J],2011.
APA	Xue, Lian-Jie.,Xu, Yue-Feng.,Huang, Ling.,黄令.,Ke, Fu-Sheng.,...&孙世刚.(2011).Lithium storage performance and interfacial processes of three dimensional porous Sn-Co alloy electrodes for lithium-ion batteries..
MLA	Xue, Lian-Jie,et al."Lithium storage performance and interfacial processes of three dimensional porous Sn-Co alloy electrodes for lithium-ion batteries".(2011).

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