Welcome to Journal of University of Chinese Academy of Sciences,Today is

›› 2011, Vol. 28 ›› Issue (4): 457-461.DOI: 10.7523/j.issn.2095-6134.2011.4.005

• Research Articles • Previous Articles     Next Articles

Preparation and electrochemical properties of Li1+xV3O8-yFy synthesized by solid state reaction method at moderate-heating temperature

QIN Hong-Lian1, TANG Zhi-Yuan1, MA Li2   

  1. 1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
    2. Dongguan Mcnair Technology Co. Ltd, Dongguan 523800, China
  • Received:2010-04-02 Revised:2010-10-25 Online:2011-07-15

Abstract:

F--doped lithium vanadium oxides Li1+xV3O8-yFy was synthesized by a solid state reaction at moderate-heating temperature with Li2CO3 and V2O5 as raw materials. Crystal structures were characterized by XRD and electrochemical properties were studied by charge-discharge performance test, cyclic voltammetry test, and conductance test. The XRD results indicate that the products are pure without any impurities. Li1+xV3O8-yFy (y=0.1) shows the best electrochemical cyclability. The first discharge specific capacity is 252.08mAh/g, and the attractive specific capacity of 210.93 mAh/g is obtained after 25 cycles at 0.2c.

Key words: Li1+xV3O8-yFy, Fluorine doping, Lithium ion batteries, cathode material, solid state reaction at moderate-heating temperature

CLC Number: