We synthesized LiFePO4/C composites from an aqueous solution that contained LiNO3, Fe(NO3)3·9H2O, NH4H2PO4 and sucrose. We utilized the sucrose as synthesizing agent and carbon source. The LiFePO4/C composites were synthesized under various conditions such as the calcination temperature and amount of sucrose to optimize our new synthesis route. In this paper, we discuss the electrochemical properties of the composites as a function of calcination temperature and amount of sucrose. The LiFePO4/C composite synthesized at 750 oC with 6.85 wt.% residual carbon showed a high discharge capacity 134 mAhg−1 at a current density 100 mAg−1.

Keywords: LiFePO4, Synthesis, Sucrose, Cathode, Lithium battery.