▎ 摘　　要

NOVELTY - Preparation of graphene-based flexible composite shaped phase change material film, involves ultrasonically forming a uniform suspension of the graphene oxide aqueous dispersion, preparing a graphene oxide aerogel by freeze-drying, reducing the graphene oxide aerogel at high temperature under nitrogen atmosphere to obtain a graphene aerogel, magnetically stir-mixing the graphene aerogel with a polyvinylidene fluoride solution, preparing the mixed solution into a graphene composite film by knife coating and placing in water for replacement, freeze-drying the film to prepare a graphene composite film carrier, mixing the film carrier with a phase change material, and placing it in a vacuum oven to make the phase change material fully enter the carrier structure. USE - Preparation of graphene-based flexible composite shaped phase change material film used as phase change material for thermal energy conversion and storage, as functional material of flexible wearable heat energy conversion and storage, and for photothermal conversion (all claimed). ADVANTAGE - The graphene-based flexible composite shaped phase change material film has strong light absorption, good flexibility, can be bent more than 180degrees without breaking, maintaining its shape. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the graphene-based flexible composite shaped phase change material film, which is a black film, and has strong light absorption capacity, with an absorbance of 1-1.8.