A ternary phased SnO_2-Fe_2O_3/SWCNTs nanocomposite as a high performance anode material for lithium ion batteries

查看全文 作　　者：Wangliang [1,2,3]Wu;Yi [1,2]Zhao;Jiaxin [1,2]Li;Chuxin [1,2]Wu;Lunhui [1,2]Guan 机构地区：[1]State Key Laboratory of Structural Chemistry,Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences;[2]Key Laboratory of Design and Assembly of Functional Nanostructures,Chinese Academy of Sciences;[3]Graduate University of Chinese Academy of Sciences 出　　处：《Journal of Energy Chemistry》索引2014年第23卷第3期,共7页 基　　金：supported by the National Key Project on Basic Research(Grant No.2011CB935904);the National Natural Science Foundation of China(Grant No.21171163,91127020);NSF for Distinguished Young Scholars of Fujian Province(Grant No.2013J06006) 摘　　要：A new SnO_2-Fe_2O_3/SWCNTs(single-walled carbon nanotubes) ternary nanocomposite was first synthesized by a facile hydrothermal approach.SnO_2 and Fe_2O_3 nanoparticles(NPs) were homogeneously located on the surface of SWCNTs,as confirmed by X-ray diffraction(XRD),transmission electron microscope(TEM) and energy dispersive X-ray spectroscopy(EDX).Due to the synergistic effect of different components,the as synthesized SnO_2-Fe_2O_3/SWCNTs composite as an anode material for lithium-ion batteries exhibited excellent electrochemical performance with a high capacity of 692 mAh·g^(-1) which could be maintained after 50 cycles at 200 mA·g^(-1).Even at a high rate of2000 mA·g^(-1),the capacity was still remained at 656 mAh·g^(-1). 关 键 词：纳米Fe2O3 单壁碳纳米管 纳米复合材料 锂离子电池 电化学性能 SNO2 负极材料 三元