▎ 摘　　要

NOVELTY - A composite phase change material comprises a foamed copper metal layer containing a phase change material and a graphene layer that are alternately arranged in a layered structure. USE - Composite phase change material for heat storage package (claimed). ADVANTAGE - The composite phase change material has high heat conduction efficiency, and reduces leakage of heat storage package. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of composite phase change material, which involves filling phase change material in copper foam metal layer by vacuum impregnation and depositing graphene layer on surface of the foamed copper metal layer.