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无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

碳纳米管的电化学贮锂性能研究

张爱黎1,2; 翟秀静1; 符岩1; 翟玉春1; 王云霞1   

  1. 1. 东北大学材料冶金学院 沈阳 110004; 2. 沈阳工业学院化工分院, 沈阳 110005
  • 收稿日期:2003-01-13 修回日期:2003-03-24 出版日期:2004-01-20 网络出版日期:2004-01-20

Characteristics of Electrochemical Storage Lithium of CarbonNanotubes

ZHANG Ai-Li1,2; ZHAI Xiu-Jing1; FU Yan1; ZHAI Yu-Chun1; WANG Yun-Xia1   

  1. 1. School of Materials and Metallurgy; Northeastern University; Shenyang 110004; China; 2. Shen Yang Industrial and Technological Institute; Shenyang 110005; China
  • Received:2003-01-13 Revised:2003-03-24 Published:2004-01-20 Online:2004-01-20

PDF (PC)

1074

被引次数

60

摘要： 以纳米镍粉为催化剂,热分解法制备了碳纳米管.应用X射线衍射对碳纳米管的结构进行了研究,透射电子显微镜观察了碳纳米管的形貌.碳纳米管的直径在15nm左右,长>100nm,d002为0.338nm.在结构上,纳米碳管具有与石墨类似的良好规整性,具有较高的可石墨化度,又具有纳米级的孔径,因此具有良好的贮锂性能.对碳纳米管的充放电性能研究结果表明,碳纳米管初始放电比容量为654mAh/g,高于纯石墨的理论容量372mAh/g,循环性能较好.

关键词: 碳纳米管, 锂离子电池, 碳负极材料, 电化学贮锂

Abstract: Carbon nanotubes were produced by catalytic thermal decomposition using metal Ni nanopartical as catalyst.
X-ray diffraction and transmission electron microscope were used to determine the size and morphology of carbon nanotubes. The results show that carbon
nanotubes are 20--30nm in diameter and longer than 100nm with a high order degree of graphitization. There are a large amount of nanochannels lead to
higher specific capacity. The carbon nanotubes exhibit a high electrochemical storage lithium capacity, being 654mAh/g at first cycle
and having a good cycling stability.

Key words: carbon nanotubes, lithium ion battery, electrochemical storage lithium

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