Low-temperature Synthesis of LiV_3O_8 as Cathode Material for Rechargeable Lithium-ion Batteries

Layered-type compound of lithium vanadium oxide LiV3O8 was synthesized at about 450℃ by the sol-gel method with LiNO3 and NH3 VO3 as raw materials. The influences of synthesis conditions on the first dischargeable specific capacities of the products were discussed by means of TG-DTG and XRD. The experimental results indicate that the product LiV3O8 obtained under the optimum synthesis conditions has perfect layered-type structure and good electrochemical property, its first discharge specific capacity is 350mAh-·g-1. It is an excellent cathode material for high-energy, long-life, rechargeable lithium-ion batteries.