▎ 摘　　要

NOVELTY - The composite electrode has an electrode main portion which is provided with electric conduction substrate. The electric conduction substrate is dispersed with the metal oxide on the graphene surface. The graphene and metal oxide are composed of graphene/metal oxide composite material. USE - Composite electrode for electrodialysis. ADVANTAGE - The method is simple and easy to operate, with low cost. The composite electrode has good chemical stability and electrochemical stability, good electrocatalytic performance, good conductivity and long use life. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) preparation method of composite electrode; and (2) application method of composite electrode. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the composite electrode.