▎ 摘　　要

NOVELTY - The current collector (10) has a metal foil (11) and a conductive adhesive layer (12) which is formed on the entire surface of an upper surface or a lower surface of the metal foil. A graphene oxide sheet layer (13) is formed on the upper surface or the lower surface of the conductive adhesive layer. The graphene oxide sheet layer is formed by transferring graphene oxide to multiple square through-patterns in a state in which that is covered with a first screen mask having multiple square through-patterns are formed on one of the upper surface or the lower surface of the conductive adhesive layer. A second graphene oxide pattern (13b) is formed by transferring the graphene oxide between multiple first graphene oxide patterns in a state that is covered with the second screen mask on which the pattern is formed, so that multiple first graphene oxide patterns are formed with the second graphene by connecting them to each other with an oxide pattern. USE - Current collector for electrode and for secondary battery. ADVANTAGE - The equivalent series resistance (ESR) characteristic is improved by reducing the resistance. The thickness of the graphene oxide sheet layer is formed to be 2 to 30 nm depending on the thickness of each of the first graphene oxide pattern and the second graphene oxide pattern, so that the graphene oxide sheet is possible to prevent a decrease in electrical conductivity due to an increase in the thickness of the layer. DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of a current collector for an electrode. Current collector (10) Metal foil (11) Conductive adhesive layer (12) Graphene oxide sheet layer (13) Second graphene oxide pattern (13b)