▎ 摘　　要

NOVELTY - Iron oxyhydroxide/graphene oxide composite electrode material is obtained by dispersing iron oxyhydroxide and graphene oxide in water bath under co-action. USE - Iron oxyhydroxide/graphene oxide composite electrode material used as a negative electrode of a supercapacitor (claimed). Can also be used in a lithium ion battery. ADVANTAGE - The iron oxyhydroxide/graphene oxide composite electrode material is prepared in a simple and easy manner, and has better performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing iron oxyhydroxide/graphene oxide composite electrode material, which involves: (A) adding urea to the ferric ion aqueous solution and stirring uniformly to obtain a mixed solution 1; (B) dispersing the graphene oxide dispersion uniformly under the action of ultrasound, and then adding the mixed solution 1, and stirring and ultrasonically mixing uniformly; (C) performing ultrasonic water bath treatment on the mixture; (D) cooling after the completion reaction, and separating the solid and liquid; and (E) washing the obtained solid and dryingd to obtain iron oxyhydroxide/graphene oxide composite electrode material.