In the development of lithium iron phosphate/carbon (LiFePO₄/C), a cathode composite for lithium-ion batteries, essential raw materials including lithium carbonate (Li₂CO₃), iron phosphate (FePO₄), and glucose (C₆H₁₂O₆) were processed using a high-temperature solid-phase method. This study provided insight into the synthesis process, particularly examining how the heating mode and target reaction temperature critically affected the formation of LiFePO₄/C. This study employed Various characterization tool and evaluation systems of X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Thermogravimetric Analysis (TGA) and additional performance evaluations like charge/discharge testing were employed. The findings highlight that the electrochemical properties of lithium iron phosphate/carbon (LiFePO₄/C) composites are significantly affected by the target temperature, heating method, carbon content, and degree of graphitization of carbon coating on the material. It was observed that indirect heating methods combined with a target temperature of 750 ℃ optimized the electrochemical performance of materials, enhancing both its discharge capability and electrical capacity. This optimized synthesis approach underscores the intricate balance required in the thermal and compositional parameters to achieve superior battery performance.

Keywords: Lithium iron phosphate/carbon (LiFePO₄/C), Heating mode, Target temperature, Electrochemical properties.