▎ 摘　　要

NOVELTY - Composite copper foil comprises base material (110) and grooves are set on the surface of the base material. A conductive part (120) is set in the groove. A copper layer (130) is set on the surface of the base material and covers the conductive part. USE - The composite copper foil is used for battery (claimed). ADVANTAGE - The composite copper foil has reduces the heat generation, and reduces the condition of overheating in the battery. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for manufacturing method of the composite copper foil. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of composite copper foil for battery. 101First surface 102Second surface 110Base material 111Groove 120Conductive part 130Copper layer 140Conductive seed layer