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Nano-sized Sn/MWNTs and MWNTs Served as the Anode of Lithium Ion Battery

Nano-sized Sn/MWNTs and MWNTs Served as the Anode of Lithium Ion Battery
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摘要 A chemical deposition was supposed to be an effwient method in preparation of nano-sized Sn/ MWNTs. The nanoconmposites of MWNTs and Sn/ MWNTs were both used as anodes of lithium ion battery. The special capacities and coulomb efficiencies of Snl MWNTs were studied by means of electrochemical methods. The coating of Sn on MWNTs observed by TEM was amorphous and nano-sized. The reversible capacity of Sn/ MWNTs , which was much larger than that of MWNTs , was 824 mAh/ g in the 1 st charge and discharge cycle. The coulomb efficiency of Sn/ MWNTs in the 1 st cycle was increased by 16% compared with that of MWNTs. The additional Sn, which was 37wt% of total Sn/ MWNTs＇ weight, introduced the additional reversible lithiation capacity at least 250 mAh/ g in the 40 charge and discharge cycles. The dispersing degree of Sn on MWNTs was the main reason for the influence of the electrochemical perfomance of the Sn/ MWNTs . Sn/ MWNTs is proved to be a promising candidate as an anode of lithium ion battery. A chemical deposition was supposed to be an effwient method in preparation of nano-sized Sn/ MWNTs. The nanoconmposites of MWNTs and Sn/ MWNTs were both used as anodes of lithium ion battery. The special capacities and coulomb efficiencies of Snl MWNTs were studied by means of electrochemical methods. The coating of Sn on MWNTs observed by TEM was amorphous and nano-sized. The reversible capacity of Sn/ MWNTs , which was much larger than that of MWNTs , was 824 mAh/ g in the 1 st charge and discharge cycle. The coulomb efficiency of Sn/ MWNTs in the 1 st cycle was increased by 16% compared with that of MWNTs. The additional Sn, which was 37wt% of total Sn/ MWNTs＇ weight, introduced the additional reversible lithiation capacity at least 250 mAh/ g in the 40 charge and discharge cycles. The dispersing degree of Sn on MWNTs was the main reason for the influence of the electrochemical perfomance of the Sn/ MWNTs . Sn/ MWNTs is proved to be a promising candidate as an anode of lithium ion battery.
作者 林克芝
机构地区 Department of Chemical Engineering
出处 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2006年第4期60-63,共4页 武汉理工大学学报（材料科学英文版）
基金 Funded by the National Basic Research Programof China( No.2003CB61570)
关键词 multi-walled carbon nanotubes （ MWNTs ） deposition NANOCOMPOSITES lithium ion battery tinbased materials multi-walled carbon nanotubes （ MWNTs ） deposition nanocomposites lithium ion battery tinbased materials
分类号 TB383.1 [一般工业技术—材料科学与工程]
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参考文献12

  • 1Lin Ke-zhi Ph D Candidate,Xu Yan-hui,Wang Xiao-lin,Luo Guo-hua.Electrochemical intercalation of lithium into raw and mild oxide-treated carbon nanotubes prepared by CVD[J].Journal of Wuhan University of Technology - Mater Sci Ed.2004(3)
  • 2Gu Ping PhD Candidate,Zhao Jian-hua,Li Guang-hai,Gong Ming.Highly ordered carbon nanotube arrays with open ends grown in anodic alumina nanoholes[J].Journal of Wuhan University of Technology - Mater Sci Ed.2003(1)
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Journal of Wuhan University of Technology(Materials Science)
2006年 第4期

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