▎ 摘　　要

NOVELTY - The preparation method of graphene oxide/manganese dioxide composite material involves mixing graphite, intercalating agent, oxidant and water and reacting to obtain graphene oxide solution, and mixing manganese source with graphene oxide solution. USE - The method is useful for preparing graphene oxide/manganese dioxide composite material, which is useful as wave-absorbing material (claimed). ADVANTAGE - The method enables simple and safe preparation of graphene oxide/manganese dioxide composite material with excellent wave absorbing performance and absorption width under mild reaction condition in an environmentally-friendly manner. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for wave-absorbing material, which contains graphene oxide/manganese dioxide composite material.