Ultrasonic-electrodeposited Sn-CNTs composite used as anode material for lithium ion battery

摘要：

Tin carbon nanotube (Sn-CNTs) composite was prepared by ultrasonic-electrodepositing tin on the substrate of copper foil in a sulfate bath containing carbon nanotubes (CNTs).The composites were characterized by scanning electron microscopy (SEM),cyclic voltammetry(CV) and charge-discharge cycling test.The results show that Sn-CNTs have a better electrochemical performance than Sn.The capacity of Sn-CNTs is 843 mA·h/g during the first discharge and the efficiency of charge-discharge reaches 85％.After 50 cycles,the capacity of Sn-CNTs keeps at 380 mA·h/g.The CNTs in tin act as a structure supporter and play a role of an elastomer and conductive network,alleviating the electrode dilapidation resulted from volume change during the lithium insertion and deinsertion.

关键词： lithium ion battery anode materials electrodeposition tin carbon nanotube

作者: LI Chang-ming ZHANG Ren-yuan LI Wei-shan ZHAO Ling-zhi HU She-jun RAO Mu-min XU Jian-xia

作者单位: School of Chemistry and Environment,South China Normal University,Guangzhou 510006,China;Faculty of Faculty of Material and Energy,Guangdong University of Technology,Guangzhou 510090,China School of Chemistry and Environment,South China Normal University,Guangzhou 510006,China School of Chemistry and Environment,South China Normal University,Guangzhou 510006,China;Faculty of School of Chemistry and Environment,South China Normal University,Guangzhou 510006,China;Department

会议类型: 国际会议

会议名称: 2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)

会议地点: 长沙

会议语种:英文

在线出版日期: 2007-11-28（万方平台首次上网日期，不代表论文的发表时间）