Study on Characteristics of LiFePO_4/C Composite Synthesized by Solid-phase Method

FeC2O4.2H2O and LiH2PO4 as raw materials,using liquid dispersion mixing,spray granulation preparation of precursor synthesized LiFePO4/ C composite cathode materials for lithium-ion batteries.Using XRD,SEM,and electrochemical test method,the characterization and performance of the samples were analyzed.The results showed that with the condition of 700 ℃ and sintering for16 h,the sample was prepared for olivine single crystal structures,which first discharge capacity was 144.4 mAh/g and can be 140.8 mAh/g after 100 cycle times.