▎ 摘　　要

NOVELTY - The preparation method of graphene/ferroferric oxide composite absorbing material involves mixing oxidized graphene dispersion liquid, iron(II) chloride solution and iron(III) chloride solution, and stirring at 80-120 degrees C to obtain oxidized graphene/ferroferric oxide dispersion liquid, and vacuum drying oxidized graphene/ferroferric oxide dispersion liquid to obtain oxidized graphene/ferroferric oxide aerogel, heating the oxidized graphene/ferroferric oxide aerogel to obtain graphene/ferroferric oxide aerogel, and mechanically pressing the graphene/ferroferric oxide aerogel. USE - Preparation method of graphene/ferroferric oxide composite absorbing material (claimed). ADVANTAGE - The method enables preparation of graphene/ferroferric oxide composite absorbing material with excellent electromagnetic performance, by environmentally-friendly process. DETAILED DESCRIPTION - The preparation method of graphene/ferroferric oxide composite absorbing material involves mixing oxidized graphene dispersion liquid, iron(II) chloride solution and iron(III) chloride solution, and stirring at 80-120 degrees C to obtain oxidized graphene/ferroferric oxide dispersion liquid, and vacuum drying oxidized graphene/ferroferric oxide dispersion liquid to obtain oxidized graphene/ferroferric oxide aerogel, heating the oxidized graphene/ferroferric oxide aerogel to obtain graphene/ferroferric oxide aerogel, and mechanically pressing the graphene/ferroferric oxide aerogel, where the graphene/ferroferric oxide composite material is a layered structure in which layers are stacked.