▎ 摘　　要

NOVELTY - Preparation of fast charging graphite composite material includes adding organic titanium epoxy resin into organic solvent, mixing and stirring uniformly to obtain mixed solution having a concentration of 5-20 wt.%, adding graphene, stirring uniformly, performing hydrothermal reaction under heating and pressurizing condition, after the reaction is finished, filtering to remove the filtrate, vacuum drying the residue at low temperature, carbonizing under inert gas environment, obtaining porous composite hard carbon matrix, preparing 5-10 wt.% inorganic lithium salt aqueous solution, adding porous composite hard carbon matrix, stirring to react, filtering the reaction liquid, drying the filter residue to obtain lithium salt/porous composite hard carbon composite material, adding into glucose solution, stirring uniformly, adding artificial graphite having particle diameter of 3-10 mu m, stirring uniformly, ball milling, and filtering. USE - The method is for preparation of fast charging graphite composite material. ADVANTAGE - The composite material has a porous structure and high first time efficiency, improves lithium ion occlusion in charge and discharge process, and improves the lithium ion battery fast charging performance and safety. DETAILED DESCRIPTION - Preparation of fast charging graphite composite material comprises adding organic titanium epoxy resin into organic solvent, mixing and stirring uniformly to obtain mixed solution having a concentration of 5-20 wt.%, adding graphene, stirring uniformly, performing hydrothermal reaction under heating and pressurizing condition, after the reaction is finished, filtering to remove the filtrate, vacuum drying the residue at low temperature, carbonizing under inert gas environment, obtaining porous composite hard carbon matrix, preparing 5-10 wt.% inorganic lithium salt aqueous solution, adding porous composite hard carbon matrix, stirring to react, filtering the reaction liquid, drying the filter residue to obtain lithium salt/porous composite hard carbon composite material, adding into glucose solution, stirring uniformly, adding artificial graphite having particle diameter of 3-10 mu m, stirring uniformly, ball milling, filtering, drying the filter residue, under the protection of inert gas, carbonizing the filter residue, naturally reducing the temperature to room temperature, and crushing.