▎ 摘　　要

NOVELTY - A graphene aerogel intelligent phase change fiber comprises a graphene aerogel fiber, a phase change material and a hydrophobic coating. The graphene aerogel fiber has a continuous graphene three-dimensional porous network structure formed by overlapping graphene sheets. The phase change material is wrapped on the graphene sheet layer and filled in the three-dimensional porous network structure. The hydrophobic coating is uniformly coated on the surface of the graphene aerogel fiber. USE - The graphene aerogel intelligent phase change fiber is useful in phase change energy storage, intelligent response, photothermal conversion and storage, electrothermal conversion and storage or flexible wearable devices (claimed). ADVANTAGE - The graphene aerogel intelligent phase change fiber has excellent electrical property, hydrophobic property and flexibility, and can be prepared by a simple method under mild and controllable reaction conditions with high yield in an environmentally-friendly manner. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a method for preparing the graphene aerogel intelligent phase change fiber, which involves (1) providing graphene aerogel fiber and/or graphene hydrogel fiber, (2) filling the graphene aerogel fiber and/or graphene hydrogel fiber with the phase change material by melt filling and/or solution filling to obtain a graphene/phase change material composite fiber and (3) coating the hydrophobic coating on the surface of the graphene/phase change material composite fiber; and (2) an application method of graphene aerogel intelligent phase change fiber, which involves applying an external voltage and/or illumination to the graphene aerogel intelligent phase change fiber, increasing the temperature of the graphene aerogel intelligent phase change fiber and storing heat to realize photothermal conversion and storage and/or electrothermal conversion and storage.