Synthesis and electrochemical properties of Li1-xVxCryFe1-yPO4/C as a cathode material

Composites Li_1-xV_xCr_yFe_1-yPO₄/C (x=0.01, 0.02; y=0.01, 0.02) were synthesized by solid-state reaction method. The influence of the content of doping vanadium and chromium on the structure of Li_1-xV_xCr_yFe_1-yPO₄/C was investigated by XRD, while the morphology of powders was observed by SEM. The investigation of the electrochemical performances showed that the Li_0.99V_0.01Cr_0.02Fe_0.98PO₄/C material has a higher capacity. At 0.1 C discharging rate, it is capable of delivering reversible specific capacity of 163.8 mAh/g with fairly stable cycleability.