Abstract:The lithium-ion battery cathode material LiFe1-xYxPO4 (x=0, 0.01, 0.02, 0.03, 0.04) were synthesized by solid-state reaction. The crystalline structure, morphology, electronic conductivity and electrochemical properties of the samples were investigated by X-ray diffraction, scanning electron microscope, powder specific resistance method and galvanostatic charge-discharge tests, respectively. The results show that a small amount of Y3+ doping does not change the crystalline structure of the material but considerably modifies the microstructure, thus increasing the electronic conductivity and improving reverse capacity and electrochemical properties. The sample of LiFe0.97Y0.03PO4 delivers an initial discharge capacity of 146.54 mAh/g at the current density of 10 mA/g