▎ 摘　　要

NOVELTY - Preparing graphene micro-nano-cavity phase change superconducting material, comprises preparing a graphene material containing multiple nano-scale cavities inside as a carrier, filling the interior of multiple nano-scale cavities with phase change material by means of immersion or injection, and removing the phase change material on the surface of the carrier. USE - The method for preparing graphene micro-nano-cavity phase change superconducting material used and can be widely used in energy storage, thermal management and other fields.. ADVANTAGE - The method combines the high thermal conductivity of graphene and the heat storage properties of phase change materials, quickly stores and releases the overall heat of phase change materials.