▎ 摘　　要

NOVELTY - Preparing heat conduction enhancement type ionic liquid composite phase-change heat storage material involves covalently functionalizing and modifying alkyl imidazole bromide ionic liquid solution and graphene by an alkyl imidazole ionic liquid containing terminal amino groups, and then subjecting to rotary evaporation and drying to obtain the heat conduction enhancement type ionic liquid composite phase-change heat storage material based on the modified graphene. USE - Method for preparing heat conduction enhancement type ionic liquid composite phase-change heat storage material based on the modified graphene. ADVANTAGE - The method prepares the heat conduction enhancement type ionic liquid composite phase-change heat storage material in a simple, cost-effective and eco-friendly manner with characteristics of large phase change latent heat and good thermal stability, increased thermal conductivity by 4.4-127.9%, and obviously improved thermal energy storage and conduction characteristics.