▎ 摘　　要

NOVELTY - Preparing phase change heat storage material with microsphere structure comprises (i) using the graphite powder to obtain graphene oxide, (ii) mixing the graphene oxide with paraffin, orderly filtering, vacuum freezing and drying to obtain paraffin-graphene oxide material, and(iii) mixing the paraffin-graphene oxide material obtained in the step (ii) with the hydroiodic acid, and heating to obtain paraffin-graphene material of the microsphere structure. USE - The method is useful for preparing phase change heat storage material with microsphere structure. ADVANTAGE - The method: has no leakage of paraffin; is environmentally friendly; utilizes wide range of raw material sources; has low cost, and good repeatability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for paraffin-graphene phase change heat storage material with microsphere structure prepared by above mentioned method.