Acta Chimica Sinica ›› 2012, Vol. 70 ›› Issue (01): 15-20.DOI: 10.6023/A1105275 Previous Articles     Next Articles

Full Papers

TiO2@MWNTs纳米复合材料的制备及其储锂性能

陈琳a, 申来法b, 聂平a, 苏晓飞a, 张校刚b, 李洪森b   

  1. a. 新疆大学化学化工学院, 乌鲁木齐 830046;
    b. 南京航空航天大学材料科学与技术学院, 南京 210016
  • 收稿日期:2011-05-27 修回日期:2011-08-02 出版日期:2012-01-14 发布日期:2012-02-25
  • 通讯作者: 张校刚 E-mail:azhangxg@163.com
  • 基金资助:

    国家自然科学基金(Nos.20873064,21173120)以及中国高校博士点专项基金(No.20060287026).

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

Chen Lina, Shen Laifab, Nie Pinga, Su Xiaofeia, Zhang Xiaogangb, Li Hongsenb   

  1. 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:2011-05-27 Revised:2011-08-02 Online:2012-01-14 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).

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