▎ 摘　　要

NOVELTY - Preparing composite material involves dispersing graphite oxide in water to obtain graphene oxide solution, placing obtained graphene oxide solution in reaction kettle for hydrothermal reaction and drying to obtain graphene gel. The solid-liquid organic phase change material and obtained graphene gel is placed under the vacuum condition, heated to remove excess solid-liquid organic phase change material and cooled to obtain composite material. USE - Method for preparing composite material (claimed). ADVANTAGE - The method enables to prepare composite material that has excellent thermal conductivity, electrical conductivity and thermal stability, good repeatability, solves the problem of phase change energy storage material with low thermal conductivity, in simple and cost effective manner.