▎ 摘　　要

NOVELTY - Preparing battery electrode comprises (a) providing graphene oxide material; (b) adding a solvent into graphene oxide material to uniformly disperse the graphene oxide material in the solvent to form a graphene oxide solution; (c) arranging the graphene oxide solution on the surface of a metal substrate; and (d) drying the graphene oxide solution to form a graphene oxide film on the surface of the metal substrate. USE - The method is useful for preparing battery electrode. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for rechargeable battery, comprising a shell for containing an electrolyte. A diaphragm is arranged in the housing. An anode is arranged on one side of the diaphragm. A cathode is set on the opposite side of the diaphragm and at least one of the anode and the cathode is manufactured by above mentioned method. DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of the rechargeable battery.