Electrochemical performance of C‐La 3+ codoped LiFePO 4 synthesized by microwave heating

Abstract La 3+ was selected to elevate the lattice electronic conductivity of LiFePO 4 , and LiFePO 4 /(C+La 3+ ) cathode powders were synthesized by microwave heating using a domestic microwave oven for 35 min. The microstructures and morphologies of the synthesized materials were investigated by XRD and SEM. The electrochemical performances were evaluated by galvanostatic charge‐discharge. The electrochemical performance of LiFePO 4 with different La 3+ contents was studied. Results indicated that the initial specific discharge capacity of LiFePO 4 /(C+La 3+ ) composites with 2% La 3+ (116.3 mAh/g) was better than that of LiFePO 4 /C (105.4 mAh/g). The addition of La 3+ further improved the electrochemical properties. So the codoping is an effective method to improve the electrochemical performance.