▎ 摘　　要

NOVELTY - Preparing boron-doped lanthanum zirconate coated graphite composite material comprises (a) mixing inorganic lithium salt, inorganic lanthanum salt, inorganic zirconium salt, borate, ethylene glycol, graphene oxide, citric acid and solvent to obtain precursor solution, hydrothermally reacting the precursor solution, drying to obtain graphene/boron-doped lanthanum zirconate precursor, and (b) spray-drying a mixed solution composed of graphene/boron-doped lanthanum zirconate lithium precursor, amorphous carbon precursor, graphite and solvent, and carbonizing. USE - The composite material is useful in the field of secondary battery cathode materials. ADVANTAGE - The boron-doped lanthanum zirconate-coated graphite composite material synergistically exhibit good lithium ion and electronic conductivity, improves the ion transport rate and conductivity of the material, and can improve the rate performance, heat dissipation performance and cycle performance of the graphite cathode material.