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Acta Chimica Sinica >

2012 , Vol. 70 >Issue 01: 15 - 20

DOI: https://doi.org/10.6023/A1105275

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Preparation and Electrochemical Lithium Storage of Titanium Dioxide@Multi-walled Carbon Nanotubes(TiO2@MWNTs) Nanocomposites

  • CHEN Lin ,
  • SHEN Lai-Fa ,
  • NIE Ping ,
  • SU Xiao-Fei ,
  • ZHANG Xiao-Gang ,
  • LI Hong-Sen
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  • a. College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046;
    b. College of Material Science and Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016

Received date: 2011-05-27

  Revised date: 2011-08-02

  Online published: 2012-02-25

Supported by

Project supported by the National Natural Science Foundation of China(Nos.20873064,21173120),Specialized Research Fund for the Doctoral Program of Higher Education of China(No.20060287026).

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Abstract

The TiO2@MWNTs nanocomposites have been prepared by a simple one-step solvothermal method using low-cost TiOSO4 as the raw material in the presence of MWNTs.X-ray diffraction(XRD), scan electron microscopy(SEM),transmission electron microscopy(TEM),nitrogen adsorption-desorption and thermogravimetric-differential scanning calorimeter(TG-DSC)analysis were performed to characterize the structures and morphologies of the TiO2@MWNTs composites.Their lithium storage properties were investigated with galvanostatic charge/discharge measurements when the composites was used as anode materials for lithium-ion batteries(LIBs).The nitrogen adsorption-desorption curve and pore size distribution verified that the TiO2@MWNTs nanocomposites had rich hierarchical pores and large specific surface area.Compared with pristine TiO2,these TiO2@MWNTs nanocomposites exhibited much higher rate capability and even better capacity retention.The reversible capacity of the nanocomposites electrode is up to 200 mAh· g-1 and remain at 182 mAh· g-1 at 1 C after 100 cycles.The reversible capacity is about 100 mAh· g-1 even at the high rate of 10 C.

Key words： lithium-ion battery; anode material; TiO2@MWNTs nanocomposites; solvothermal

Cite this article

CHEN Lin , SHEN Lai-Fa , NIE Ping , SU Xiao-Fei , ZHANG Xiao-Gang , LI Hong-Sen . Preparation and Electrochemical Lithium Storage of Titanium Dioxide@Multi-walled Carbon Nanotubes(TiO2@MWNTs) Nanocomposites[J]. Acta Chimica Sinica, 2012 , 70(01) : 15 -20 . DOI: 10.6023/A1105275

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