▎ 摘　　要

NOVELTY - A graphene aerogel hollow fiber has ring-shaped structure, closed graphene aerogel wall, duct cavity running through the fiber axis, graphene sheet layer formed by three-dimensional overlapping, and continuous three-dimensional porous network, where duct cavity is surrounded by graphene aerogel wall. USE - The graphene aerogel hollow fiber is used for phase change energy storage, light and hot water evaporation, intelligent fluid transport, intelligent response, or flexible wearable devices (claimed). ADVANTAGE - The graphene aerogel hollow fiber has excellent mechanical flexibility, water transmission performance, light-to-heat conversion performance, important applications in seawater desalination, simple preparation process, and mild reaction conditions. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) preparation of the graphene aerogel hollow fiber comprising using coaxial needle-assisted sol-gel technology to prepare graphene hydrogel hollow fiber; and performing supercritical fluid drying and/or freeze-drying treatment; (2) preparation of graphene aerogel phase change composite hollow fiber comprising filling phase change material in graphene aerogel hollow fiber by melt filling and/or solution filling; and (3) photothermal water evaporation method comprising performing array integrated treatment on graphene aerogel hollow fibers, preparing graphene aerogel hollow fiber array composite material, placing on water surface, photothermal evaporating water, and performing hydrophilic modification, thermal insulation treatment, and self-floating functional modification, where water is seawater.