Vanadium-doped spherical LiFePO_4/C prepared by carbothermal reduction

By carbothermal reduction,spherical carbon coated lithium iron phosphate( LiFePO4/ C) materials with different vanadium doping amount( x) LiFe1- xVxPO4/ C was prepared. Cyclic voltammetry and galvanostatic charge-discharge tests showed that proper vanadium doping could improve the electrochemical performance of the material. The material which x = 0. 05 had better electrochemical performance,when charged-discharged in 2. 5 ~ 4. 2 V at 0. 1 C,the initial specific discharge capacity was 151. 1 mAh / g,the specific discharge capacity could maintain at about 104. 4mAh / g at 10. 0 C rate.