Acta Phys. -Chim. Sin. ›› 2011, Vol. 27 ›› Issue (01): 97-102.doi: 10.3866/PKU.WHXB20110134

• ELECTROCHEMISTRY AND NEW ENERGY • Previous Articles     Next Articles

Characterization of TiS2 as an Anode Material for Lithium Ion Batteries

CHEN Shi-Yu1,2, WANG Zhao-Xiang2, FANG Xiang-Peng2, ZHAO Hai-Lei3, LIU Xiao-Jiang1, CHEN Li-Quan2   

  1. 1. Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang 621900, Sichuan Province, P. R. China;
    2. Laboratory for Solid State Ionics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, P. R. China;
    3. School of Material Science and Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China
  • Received:2010-08-20 Revised:2010-10-15 Published:2010-12-31
  • Contact: WANG Zhao-Xiang E-mail:zxwang@aphy.iphy.ac.cn
  • Supported by:

    The project was supported by the National Key Basic Research Program of China (973) (2009CB220100).

Abstract:

Hexagonal TiS2 was synthesized as a high-capacity anode material for lithium ion batteries.X-ray diffraction (XRD) and scanning electron microscopy (SEM) indicated that this material had a layeredstructure with particle sizes between 10 and 20 μm. It shows three discharge plateaus between 3.00 and0.00 V with a reversible capacity of up to 668 mAh·g-1. It has excellent cycling performance between 3.00and 1.40 V. Particle pulverization and formation of Li2S lead to performance degradation because of theirreversible dissolution of Li2S into the electrolyte below 0.50 V. The addition of extra acetylene black and adecrease in particle size markedly improve the electrochemical performance of the TiS2 anode.

Key words: TiS2, Lithium ion battery, Anode material, Charge-discharge mechanism, Modification

MSC2000: 

  • 0646