The influence of sintering temperature,carbon content and dispersive agent in ball-milling was investigated on the properties of Li Fe PO_4/C prepared using Fe_2O_3,NH_4H_2PO_4,Li_2CO_3 and glucose via solid state reaction.X-ray powder diffraction,scanning electron microscopy and charge–discharge test were applied to the characterization of the Li Fe PO_4/C samples synthesized under different conditions.Sintering temperature affects the crystallite/particle size and degree of crystallinity of LiF eP O_4,formation of Fe_2 P and maintenance of carbon in LiF e PO_4/C.Carbon maintenance is favored by low sintering temperature,and 700 °C is optimum for synthesis of LiF eP O_4/C with superior electrochemical performance.A higher carbon content in the range of 4.48%–11.03% results in a better rate capability for Li Fe PO_4/C.The dispersive agent used in ball-milling impacts the existent state of carbon in the final product which subsequently determines its charge–discharge behavior.The sample prepared at700 °C by using acetone as the dispersive agent in ball-milling exhibits an excellent rate capability and capacity retention without any fade at 0.1C,1C and 2C,with corresponding average discharge capacities of 153.8,128.3and 121.0 m A·h·g~(-1),respectively,in the first 50 cycles. The influence of sintering temperature, carbon content and dispersive agent in ball-milling was investigated on the properties of Li Fe PO_4 / C prepared using Fe_2O_3, NH_4H_2PO_4, Li_2CO_3 and glucose via solid state reaction. X-ray powder diffraction, scanning electron microscopy and charge-discharge test were applied to the characterization of the Li Fe PO 4 / C samples synthesized under different conditions. Sintering temperature affects the crystallite / particle size and degree of crystallinity of LiF eP O 4, formation of Fe 2 P and maintenance of carbon in LiF e PO_4 / C.Carbon maintenance is favored by low sintering temperature, and 700 ° C is optimum for synthesis of LiF eP O_4 / C with superior electrochemical performance. A higher carbon content in the range of 4.48% -11.03% results in a better rate capability for Li Fe PO 4 / C. The dispersive agent used in ball-milling impacts the existent state of carbon in the final product that next determines its charge-discharge behavior. sample prepared at 700 ° C by using acetone as the dispersive agent in ball-milling exhibits an excellent rate capability and capacity retention without any fade at 0.1C, 1C and 2C, with corresponding average discharge capacities of 153.8, 128.3 and 121.0 m A · h · G ~ (-1), respectively, in the first 50 cycles.