▎ 摘　　要

NOVELTY - Use of silane coupling agent i.e. silicon containing compound (I) in energy storage material is claimed. The energy storage material is prepared by taking graphene aerogel as a carrier and paraffin wax as a phase change material. The graphene aerogel is prepared by carrying out chemical reduction self-assembly and freeze-drying of graphene oxide. The graphene oxide is graphene oxide modified by silane coupling agent. USE - (I) is useful in energy storage material for solar energy heating system (all claimed). ADVANTAGE - The energy storage material has better thermal conductivity and high phase change latent heat and better stability; is less prone to leakage; and has improved heat and mass transfer efficiency of energy storage materials compared to existing technologies. DETAILED DESCRIPTION - Use of silane coupling agent i.e. silicon containing compound of formula (I) in energy storage material is claimed. The energy storage material is prepared by taking graphene aerogel as a carrier and paraffin wax as a phase change material. The graphene aerogel is prepared by carrying out chemical reduction self-assembly and freeze-drying of graphene oxide. The graphene oxide is graphene oxide modified by silane coupling agent. A1 = 2-50C divalent, trivalent or tetravalent organic group; L1 = 1-10C organic group; and R1-R3 = H, 1-10C alkyl or alkoxy group optionally substituted by halo, 2-10C alkenyl or alkenyloxy optionally substituted by halo, or 5-10C aryl group or aryloxy group optionally substituted by halo.