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	电沉积法制备锂离子电池锡铜合金负极及表面修饰
	任建国 ; 蒲薇华 ; 何向明 ; 万春荣 ; 姜长印 ; Ren Jianguo ; Pu Weihua ; He Xiangming ; Wan Chunrong ; Jiang Changyin
	2010-07-19 ; 2010-07-19
关键词	锂离子电池 锡铜合金 热处理 表面修饰 lithium ion battery tin-copper alloy heat treatment surface modification TM912
其他题名	Synthesis and Surface Modification of Tin-Copper Alloy Anode for Lithium Ion Battery by Electrodeposition Process
中文摘要	采用脉冲电沉积与热处理相结合的工艺制备铜锡合金,并作为锂离子电池的负极考察其电化学性能。在集流体铜箔上直接沉积锡,然后进行热处理形成铜锡合金层。锡电极在200℃和300℃热处理过程中分别形成了Sn／Cu6Sn5／Cu3Sn和Sn／Cu3Sn复相结构,合金相的产生提高了电极的循环性能,但降低了电极的比容量。通过在锡电极表面覆铜,改变了锡电极热处理后的表面成分,由Sn／Cu6Sn5混合相转变为Cu／Cu6Sn5混合相,有效提高了锡电极长期循环的结构稳定性,使电极同时具备了较高的活性和较好的循环性能。; A pulsed electrodeposition and heat-treatment process was used to prepare copper-tin alloys for the anode of lithium ion battery. The copper-tin alloy electrodes with the structures of Sn/Cu6Sn5/Cu3Sn and Sn/Cu3Sn were obtained by plating tin on a substrate of copper foil followed by an anneal-treatment process at 200℃and 300℃. The surface modification of copper-tin alloy electrode was tried. The improved cycle performances and the relatively low specific capacity are due to the formation of copper-tin alloy phases. The main component of the electrode surface changed from Sn/Cu6Sn5 to Cu/Cu6Sn5 after copper coating followed by heat-treatment. After surface modification, the copper-tin alloy electrode presented a high structure stability in a long cycle term. As a result, the copper-tin alloy anode was obtained with high activity and high stability.
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/74703]
专题	清华大学
推荐引用方式 GB/T 7714	任建国,蒲薇华,何向明,等. 电沉积法制备锂离子电池锡铜合金负极及表面修饰[J],2010, 2010.
APA	任建国.,蒲薇华.,何向明.,万春荣.,姜长印.,...&Jiang Changyin.(2010).电沉积法制备锂离子电池锡铜合金负极及表面修饰..
MLA	任建国,et al."电沉积法制备锂离子电池锡铜合金负极及表面修饰".(2010).

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