▎ 摘　　要

NOVELTY - Method for preparing an electromagnetic shielding material, involves (i) providing bacterial cellulose, carrying out low-temperature carbonization treatment on the bacterial cellulose at 200-800 degrees C to obtain surface hydrophobic bacterial cellulose, (ii) depositing a graphene oxide aqueous solution on the surface of the bacterial cellulose, and drying to remove the solvent to obtain a composite product of the graphene oxide coated bacterial cellulose, and (iii) carrying out high-temperature carbonization treatment on the composite product at 800-2500 degrees C to obtain the electromagnetic shielding material. USE - The method is useful for preparing an electromagnetic shielding material. ADVANTAGE - The method adopts the low-temperature carbonized bacterial cellulose as the core or intermediate layer of the electromagnetic shielding material, and the graphene oxide on the surface of the bacterial cellulose is reduced to form a dense reduced graphene oxide film. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for an electromagnetic shielding material, comprising carbonized bacterial cellulose, and a reduced graphene oxide layer formed on an outer surface of the carbonized bacterial cellulose, where the carbonized bacterial cellulose contains a three-dimensional pore structure.