Acta Phys. -Chim. Sin. ›› 2009, Vol. 25 ›› Issue (03): 441-445.doi: 10.3866/PKU.WHXB20090308

• ARTICLE • Previous Articles     Next Articles

Preparation and Electrochemical Performance of Tin-Dioxide Filled Multi-Walled Carbon Nanotubes

 MA Ruo-Biao, FU Yan-Bao, MA Xiao-Hua   

  1. Department of Materials Science, Fudan University, Shanghai 200433, P. R. China
  • Received:2008-09-24 Revised:2008-12-18 Published:2009-03-02
  • Contact: MA Xiao-Hua E-mail:xhma@fudan.edu.cn

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Abstract:

Multi-walled carbon nanotubes (MWCNTs) were purified and chopped by nitric acid. Tin dioxide filled MWCNTs were prepared via a diffusion method. A tin dichloride solution was mixed with AgNO3, filtered and then MWCNTs were sonicated in the filtrate. After calcination in N2 atmosphere the salt filled in the MWCNTs decomposed to SnO2. Structural and morphological characterization of the composite material by X-ray diffraction (XRD) and transmission electron microscopy (TEM) showed that the MWCNTs were filled with discrete nano-SnO2 particles. Compared to pristine MWCNTs and purified-MWCNTs, the SnO2-filled MWCNTs exhibited high capacity and good cyclability during charge-discharge cycling. The SnO2/MWCNTs nanocomposites showed better cyclability than pure SnO2 nano-materials.

Key words: Carbon nanotubes, Tin-dioxide, Nanocomposite, Lithium-ion battery