▎ 摘　　要

NOVELTY - Composite material based on an organometallic framework comprises graphene and organometallic framework materials grown in situ on the surface of grapheme. USE - Used as composite material based on an organometallic framework. ADVANTAGE - The material: improves thermal management performance; and has good industrial application potential. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: 1 preparing the composite material based on an organometallic framework, comprising (i) adding chromium(III) nitrate nonahydrate and terephthalic acid to deionized water, adding graphene oxide to obtain the precursor liquid, then subjecting precursor liquid to hydrothermal reaction treatment to obtain crude product of MIL-101Cr-GO, where the mass ratio of the chromium(III) nitrate nonahydrate and the terephthalic acid is 1:0.415, where the ratio of the mass of the chromium(III) nitrate nonahydrate and the volume of the deionized water is 1.6 g: 30-50 ml, (ii) pouring the crude product of MIL-101Cr-GO obtained in the step (i) into a centrifuge tube, adding deionized water, and then centrifuge at 5000-8000 revolutions/minute for more than ten minutes, and maintaining repeatedly adding deionized water, precipitation and centrifuging for many times, washing the precipitate obtained from the last centrifugation with ethanol and dimethylformamide for many times, and drying to obtain target MIL101Cr-GO; and 2 thermal management coating based on organometallic framework composite material, comprising binder component and the composite material based on the organometallic framework, where the binder component includes silica sol, sodium carboxymethyl cellulose, aqueous polyurethane or silicone adhesive.