▎ 摘　　要

NOVELTY - Preparing ZIF-67 derived Co-C/RGO double-layer wave-absorbing film comprises adding cobalt nitrate hexahydrate, 2-methylimidazole and polyvinylpyrrolidone into methanol, stirring and aging to obtain an aging solution, adding copper chloride and graphite oxide hydrosol into methanol, and ultrasonically dispersing to obtain a graphene oxide dispersion, adding the graphene oxide dispersion into the aging liquid, stirring to obtain a mixed liquid, subjecting the mixed solution to suction filtration to obtain a suction filtration membrane attached to a ZIF-67/GO double-layer membrane, and drying to obtain a dried ZIF-67/GO double-layer membrane, treating the dried ZIF-67/GO bilayer film at high temperature. USE - Preparation method of ZIF-67 derived Co-C/RGO double-layer wave-absorbing film used in electronic information technology. ADVANTAGE - The method solves the problem that the ZIF-67 is difficult to form uniform film due to strong electrostatic interaction, and improves the electromagnetic wave absorption performance of the existing wave-absorbing material.