▎ 摘　　要

NOVELTY - Preparing high-infrared emissivity graphene/manganese dioxide porous material involves dissolving graphene powder in distilled water and ultrasonically dispersing for 40 minutes to completely dispersing graphene. The potassium permanganate is added to the solution and ultrasonically dispersed for 30 minutes. The mixed solution is added into the hydrothermal synthesis reactor, reactor is placed in box-type atmosphere furnace for hydrothermal reaction, suction filtered, washed, and dried to obtain final product. USE - Method for preparing high-infrared emissivity graphene/manganese dioxide porous material (claimed). ADVANTAGE - The method enables to prepare high-infrared emissivity graphene/manganese dioxide porous material in simple and environment-friendly manner, is easy for industrial production, which has porous material infrared emissivity of 8-14 micrometer is 0.94-0.98, high far infrared emission rate, stability, and has tremendous application potential.