A New Method for Improving the Capacity of Li1+xV3O8 in Rechargeable Lithium Batteries

A new method was used to synthesize the cathode material Li1+xV3O8, and it simplified the process of preparing and shortened the time of reaction in comparison with previous Sol-gel method with the citric acid. The characteristics of Li1+xV3O8 were investigated by X-ray diffraction, thermogravimetry and differential thermal analysis, and transmission electron microscopy, which showed the material Li_1+xV₃O₈ with a good thermal stability had been obtained via the new method. The electrochemical performance of Li_1+xV₃O₈ was measured, which indicated that the material obtained had a remarkable discharge capacity of 380mAh/g and a good cycle performance.