On the Electrochemistry of Olivine-Type LiFePO4 Synthesized Using FePO4 as the Raw Material

In the present work, the commercial FePO4 u 4H(2)O was directly used as the iron source to synthesize olivine-type LiFePO4 cathode via solid state reaction method. By investigating the dependence of the reversible capacity on the synthesis temperature, 550 degrees C was found to be the optimal sintering temperature. Furthermore, the influence of coated/doped Ce/La oxides on the electrochemical performance of synthesized LiFePO4 electrodes was also investigated. It was found that La2O3 and CeO2 can effectively improve the electrode properties, especially the high-rate discharge-ability. The action La2O3 and CeO2 plays was briefly discussed.