▎ 摘　　要

NOVELTY - In situ growth of graphene two-dimensional covalent organic framework composite comprises (i) dissolving monomer with ketone group in the mixed solution made of acetic acid and ethanol, and subjecting to ultrasonic to obtain solution A, (ii) dissolving monomer with amino functional group and graphene oxide in acetic acid aqueous solution, and subjecting to ultrasonic to obtain solution B, and (iii) dropping the solution A into the solution B for reaction, stirring after completion of the reaction, collecting the obtained precipitate for annealing to obtain graphene two-dimensional covalent organic framework composite material. USE - The graphene two-dimensional covalent organic framework composite material is useful in water electrolysis catalysis, preparation of solar cells and supercapacitors (claimed). ADVANTAGE - The method: enables to prepare graphene two-dimensional covalent organic framework composite material that has rich active sites and high conductivity; and is simple. The composite material can be used as the electrode material of the energy battery. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for graphene two-dimensional covalent organic framework composite material, obtained by above method.