▎ 摘　　要

NOVELTY - Preparing bimetallic-graphene composite electrode comprises: (i) mixing two metal source compounds i.e. nickel nitrate and cerium nitrate with solvent to obtain first mixed solution; (ii) stirring and mixing first mixed solution, graphene and support powder to obtain second mixed solution; (iii) carrying out hydrothermal reaction to second mixed solution to obtain active material mixture; and (iv) placing active material mixture on surface of current collector. The metal source compound comprises cerium source compound, nickel source compound, cobalt source compound, ruthenium source compound, rhodium source compound and/or palladium source compound. The solvent comprises organic matter aqueous solution of polyvinyl alcohol, ethylene glycol, propanetriol, polyethylene glycol, polypropylene glycol, polyvinylpyrrolidone, polyacrylate, polyacrylamine and/or polyacrylmaleate. The support powder comprises mineral cotton, sepiolite, aluminum silicate cotton and/or polyurethane. USE - The method is useful for preparing bimetallic-graphene composite electrode, which is useful for water treatment device (all claimed). ADVANTAGE - The method utilizes one-step hydrothermal method, can cooperatively catalyze and degrade organic matter in wastewater, has simple process, low production device and technique requirement, less operation step, strong operability, and easy to realize large-scale industrial production. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: bimetallic-graphene composite electrode, prepared by above method; and water treatment device. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of water treatment device.