Optimization of electrochemical properties of LiFePO4/C prepared by an aqueous solution method using sucrose

摘要: LiFePO4 can be used as a positive electrode material for lithium-ion batteries by making composite with electrical conductive carbonaceous materials. In this study, LiFePO4/C (carbon) was prepared soft chemistry route, in which sucrose carbon source of low price. We tried to optimize Li/(LiFePO4/C) cell performance through changing synthetic conditions and discussed the factors affecting electrochemical performances cell, such amount source, temperature, gas flow rate pyrolysis formation secondary phases. It found that connection residual Fe2P particles these two phases were important factors. our experimental conditions, including 9.72 wt.% carbon, at 800 °C 12 h showed highest reversible capacity best C among synthesized materials; 130 mAh g−1 10C 50 °C.