▎ 摘　　要

NOVELTY - Graphene-based temperature control coating comprises a thermal conductivity-radiation seamless series heat dissipation gradient structure composed of high thermal conductivity graphene powder and high radiation graphene powder, where the content of the high thermal conductivity graphene powder and the high radiation graphene powder is distributed in a gradient in the thickness direction of the graphene-based temperature control coating. The mass ratio of the high thermal conductivity graphene powder and the high radiation graphene powder from the side close to the substrate to the other side away from the substrate is gradually changed from 1:0.01-1:0.1-1:1-1:5, where the graphene-based temperature control coating covers the substrate. USE - The graphene-based temperature control coating is useful in electronic device. Uses include but are not limited to electric vehicle, hybrid vehicle, plug-in hybrid electric vehicle and hydrogen-powered vehicle. ADVANTAGE - The graphene-based temperature control coating exerts synergistic effect of two heat transfer channels of high thermal conductivity and high radiation, and realizes efficient regulation of the temperature of the substrate. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a preparation of graphene-based temperature control coating comprising (S1) providing high thermal conductivity graphene-based composite coating by high thermal conductivity graphene powder, and high radiation graphene-based composite coating by high radiation graphene powder, and (S2) simultaneously and dynamically coating the high thermal conductivity graphene-based composite coating and the high-radiance graphene-based composite coating on the substrate respectively, where the loading rate of the high thermal conductivity graphene-based composite coating gradually decreases during coating, and gradually increases while the loading rate of the high-radiative graphene-based composite coating, the initial coating loading rate ratio of high thermal conductivity graphene powder and high radiation graphene powder is 1:0.01-1:0.1, and the final coating loading rate ratio is 1:1 to 1:5, or (S3) coating a dynamic mixture of highly thermally conductive graphene-based composite coatings and high-radiative graphene-based composite coatings on the substrate, wherethe content of the high thermal conductivity graphene-based composite coating in the dynamic mixture gradually decreased, and gradually increased while the content of the high-radiative graphene-based composite coating, where the initial mixed loading rate ratio of the high thermal conductivity graphene powder and the high radiation graphene powder is 1:0.01-1:0.1, and the final mixed loading rate ratio is 1:1-1:5.