Acta Phys. -Chim. Sin. ›› 2011, Vol. 27 ›› Issue (09): 2118-2122.doi: 10.3866/PKU.WHXB20110841

• ELECTROCHEMISTRY AND NEW ENERGY • Previous Articles     Next Articles

Hydrothermal Synthesis of Spherical Li4Ti5O12 as Anode Material for High Power Lithium-Ion Secondary Battery

YAN Hui, ZHANG Huan, ZHANG Ding, ZHU Zhi, QI Lu   

  1. Beijing National Laboratory for Molecular Sciences, New Energy Materials and Technology Laboratory, Department of Applied Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
  • Received:2011-03-28 Revised:2011-05-17 Published:2011-08-26
  • Contact: QI Lu
  • Supported by:

    The project was supported by the National High Technology Research and Development Program of China (863) (2008AA11A102).

Abstract: Pure spinel-type lithium titanate, Li4Ti5O12, was successfully fabricated by a facile hydrothermal route using anatase TiO2 and LiOH solution as raw materials. The obtained samples were characterized by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and laser particle size distribution (PSD) analysis. The results showed that a spherical well-crystallized Li4Ti5O12 oxide was obtained at a calcination temperature of 800 °C. The optimal Li4Ti5O12 also has excellent electrochemical performance, which reached 162 mAh·g-1 at a current density of 35 mA· g-1 and a good rate capability with a capacity reached 124 mAh·g-1 even at a current density of 720 mA·g-1.

Key words: Hydrothermal synthesis, Spherical, Li4Ti5O12, Electrochemical performance, Lithium-ion secondary battery