▎ 摘　　要

NOVELTY - A paraffin/graphene-like specific phase change material is prepared by dispersing a high-thermal conductivity material in polyamic acid glue, mixing with polymer molecular chain through chemical bonding or other method, sintering the polyimide into a graphene-like honeycomb network structure, forming a three-dimensional heat conduction network with high thermal conductivity in X-axis and Y-axis, obtaining a high-performance graphene-like thermally conductive film, and preparing paraffin/graphene-like specific phase change material using graphene-like thermally conductive film as a support for shaping and heat conduction enhancer, paraffin as a phase change material by composite method. USE - Paraffin/graphene-like specific phase change material is used in lithium ion battery (claimed). ADVANTAGE - The paraffin/graphene-like specific phase change material is prepared by simple process, has high thermal conductivity, excellent heat-dissipation effect, and provides battery with rapid charge and discharge and excellent cycle performance.