; Wang Zhong-Li
; Yu Chun-Yang
; Xia Ding-Guo] Beijing Univ Technol, Coll Environm & Energy Engn, Beijing 100022, Peoples R China
; [Yu Chun-Yang] Beijing Union Univ, Biochem Engn Coll, Beijing 100023, Peoples R China
; [Wu Zi-Yu] Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China
Mo-doped LiFePO4 was prepared using (NH4)(6)Mo7O24 center dot 4H(2)O as doping starting material by solid state method under N-2 atmosphere. The Mo-doped LiFePO4 samples were characterized by X-ray diffraction, scanning electron microscope. X-ray photoelectron spectrum, extended X-ray absorption fine structure, positron annihilation technique, and electrochemical performance testing at different discharge rates. The results showed that Mo-doped LiFePO4 preserved pure olivine structure. Mo6+ occupied Fe site and Li site simultaneously and the electronic conductivity of LiFePO4 increased. The Mo-doped LiFePO4 had a reversible capacity 141 mAh center dot g(-1) at 1C discharge rate, and showed good electrochemical properties.