Full-bio-based shape-stabilized phase change energy storage material and preparation method thereof

The invention belongs to the technical field of energy storage materials, and particularly discloses a full-bio-based shape-stabilized phase change energy storage material and a preparation method thereof. The full-bio-based shaping phase change energy storage material comprises composite carbon aerogel and a phase change medium, wherein the phase change medium is adsorbed in the composite carbon aerogel; the composite carbon aerogel comprises diatom shells and cellulose carbon aerogel. According to the full-bio-based shape-stabilized phase change energy storage material, the composite carbon aerogel containing the diatom shells and the cellulose carbon aerogel serves as a porous framework, and the composite carbon aerogel has excellent adsorption performance and can bear a phase change medium as high as 92.9 wt%. The whole bio-based shaping phase change energy storage material has good heat-conducting property, and the heat conductivity coefficient can reach 0.31 W/m; the heat storage material has the advant