Abstract: LiFePO4 anode materials which were doped at the Fe site were prepared by ball milling.The samples were characterized by X-ray diffraction（XRD） and environmental scanning electron microscope（ESEM），and they were made in button-type electrochemical cells for performance testing and analysis by using the Land system and electrochemical working station.Results indicated that the LiM0.05Fe0.95PO4 and LiFePO4 samples had the same crystal structure.At 0.1 C rates，the initial discharge capacity of LiFePO4 was 125 mA·h/g，and the initial discharge capacities were up to 145，141，and 139 mA·h/g after doping by M（M=Mg，Cu，and Zn） at Fe site，respectively.It improved the electrochemical properties of the materials significantly and reduced its alternating-current impedance.The capacity remaining rate was about 87% after 50 cycles.

Key words: LiFePO4, doping, electrochemical properties