Acta Phys. -Chim. Sin. ›› 2014, Vol. 30 ›› Issue (3): 476-484.doi: 10.3866/PKU.WHXB201401071

• ELECTROCHEMISTRY AND NEW ENERGY • Previous Articles     Next Articles

Synthesis and Electrochemical Lithium Storage Performance of WO3 Nanorods/Graphene Nanocomposites

ZHANG Qing-Qing, LI Rong, ZHANG Meng-Meng, GOU Xing-Long   

  1. Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637000, Sichuan Province, P. R. China
  • Received:2013-08-06 Revised:2014-01-06 Published:2014-02-27
  • Contact: GOU Xing-Long E-mail:gouxlr@126.com
  • Supported by:

    The project was supported by the Natural Science Foundation of China (51071131) and Program for New Century Excellent Talents in University (NCET-10-0890).

Abstract:

WO3 nanorods/graphene nanocomposites (WO3/RGO) were prepared by the solvothermal treatment of tungsten hexachloride and graphene oxide in alcohol. The electrochemical performance of WO3/RGO as anode materials for lithium-ion batteries was investigated by galvanostatic charge-discharge tests, cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). The discharge capacity of the composite at the first cycle was 761.4 mAh·g-1, and about 635 mAh·g-1 of reversible capacity remained after 100 cycles at a rate of 0.1C (1C=638 mA·g-1). The corresponding retention rate was 83.4%. The reversible capacity remained lager than 460 mAh·g-1 at a rate of 5C. WO3/RGO exhibited excellent cycling stability and rate performance, and has potential in advanced lithium-ion batteries.

Key words: Tungsten trioxide, Graphene, Nanocomposite, Lithium-ion battery, Anode material

MSC2000: 

  • O646