▎ 摘　　要

NOVELTY - A composite material comprises aniline oligomer/polyoxyethylene block copolymer fixed on surface of graphene at weight ratio of 1: 25-25: 1 forming non-covalent bond. The aniline oligomer/polyoxyethylene block copolymer has molecular weight of 4000-1200 g/mol. USE - Composite material. ADVANTAGE - The composite material has good solubility, dispersibility, processability and electrochemical activity, high Seebeck coefficient, and greatly improved electrical conductivity and thermoelectric performance. DETAILED DESCRIPTION - A composite material comprises aniline oligomer/polyoxyethylene block copolymer fixed on surface of graphene at weight ratio of 1: 25-25: 1 forming non-covalent bond. The aniline oligomer/polyoxyethylene block copolymer has molecular weight of 4000-1200 g/mol. The polyoxyethylene is of formula HOOC-CH2(OCH2CH2)nOCH2-COOH. n=400-1000. An INDEPENDENT CLAIM is included for preparation of composite material comprising performing first reduction reaction of polyethylene glycol carboxylic acid, aniline oligomer and catalyst in presence of activator in solvent under inert atmosphere, mixing with graphite oxide, ultrasonically dispersing in organic solvent and performing second reduction reaction.