▎ 摘　　要

NOVELTY - Manufacture of electrode involves immersing electroconductive materials (A and B) in a solution (100) containing graphene oxide (102) having negative charge, and adhering graphene oxide to the surface of electroconductive material (A) by applying voltage between electroconductive materials (A and B). At least one portion of the graphene oxide adhered to the surface of the electroconductive material (A) is reduced. USE - Manufacture of electrode used for lithium ion secondary batteries (claimed) for electrical storage apparatus. Uses include but are not limited to semiconductor devices, display apparatus, light-emitting devices, and vehicles. ADVANTAGE - The method enables manufacture of electrode with three-dimensional structure, curved surface, uniform thickness, and suppressed generation of cracks. The secondary battery having electrode has suppressed deterioration, and improved charging/discharging characteristics and reliability. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view explaining the preparation of different forms of graphene. Solution (100) Article (101) Graphene oxide (102,103)