▎ 摘　　要

NOVELTY - Preparing graphene with high thermal conductivity involves dispersing graphene oxide in the solution to obtain a graphene oxide solution, and controlling the concentration of the graphene oxide solution between 0.01-14.8 mg/mL. The graphene oxide solution is rapidly frozen and solidified, and then freeze-dried to obtain a fan-shaped graphene oxide. The fan-shaped graphene oxide is reduced to obtain a fan-shaped graphene. USE - Method for preparing graphene with high thermal conductivity. ADVANTAGE - The method enables to prepare graphene with high thermal conductivity, that high electrical conductivity, high specific surface area and high electrical conductivity, and can be widely used in the field of high-power light emitting diode lamps and electronic device equipment for heat dissipation, and preparation method is simple and the cost is low, which is expected to realize the large-scale production of folding fan-shaped graphene. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing a heat-releasing graphene coating, which involves: (A) dispersing graphene oxide in the solution to obtain a graphene oxide solution, and controlling the concentration of graphene oxide to be between 0.01-14.8 mg/mL; (B) freezing and solidifying graphene oxide solution, and then freeze-drying to obtain a fan-shaped graphene oxide; (C) reducing fan-shaped graphene oxide to obtain a fan-shaped graphene, and dispersing the fan-shaped graphene in a solution to obtain a graphene solution; and (D) surface-treat ing the substrate to enhance adhesion, spraying the graphene solution, and obtaining a heat-releasing graphene coating after reduction treatment.