Abstract
Spherical LiFePO4/C cathode materials were successfully prepared by spray pyrolysis. Particle size, morphology and crystal phase of LiFePO4/C powders were characterized by XRD and SEM. XRD showed that olivine structure was formed by the calcination at 700 oC under Ar-H2 atmosphere. They had spherical morphology with particle size of 1.5 micro m. Electrochemical measurement revealed that the discharge capacity of LiFePO4 was improved by the addition of carbon. The first discharge capacity of LiFePO4/C was about 141 mAh/g and 73 mAh/g at 0.1 C and 5 C respectively.
