▎ 摘　　要

NOVELTY - Method of energy storing involves mixing graphene and phase change material to obtain composite phase change material, performing electrical energy-driven microwave irradiation on graphene composite phase change material, subjecting graphene to absorb microwaves to generate heat, converting electrical energy into thermal energy by microwave/graphene action and storing in graphene composite phase change material. The phase change material comprises at least one of paraffin wax, hydrated sodium acetate, hydrated magnesium nitrate, hydrated cesium hydroxide and 2,2-dimethylolpropionic acid. USE - Method of energy storing. ADVANTAGE - The method produces composite phase change material which has long heat storage time and slow temperature drop and utilizes graphene as absorbing material which has large dielectric loss and achieves rapid heating in the microwave and heat storage of the phase change material.