Electrolytic copper foil for graphene and method for producing the copper foil
The present disclosure relates to an electrolytic copper foil for graphene and a method for producing the copper foil, in which, in the manufacture of the electrolytic copper foil for graphene, addition of nickel facilitates the synthesis of the graphene. The addition of nickel which serves as a seed in the synthesis of graphene on electrolytic copper foil reduces the electrical conductivity after graphene synthesis. As a result, graphene is uniformly formed on the surface of the copper foil. Further, the present disclosure may provide the electrolytic copper foil for graphene and the method for producing the copper foil in which an electrolytic copper foil having a resistance value of less than 300 ohm/square after the synthesis of the graphene on the electrolytic copper foil is produced, thereby, facilitate the formation of graphene on the electrolytic copper foil.
1. An electrolytic copper foil for synthesis of graphene, wherein the electrolytic copper foil before thermal treatment has a tensile strength of 45 to 70 kgf/mm 2 at a room temperature, wherein the electrolytic copper foil after the thermal treatment has a tensile strength of 20 to 35 kgf/mm 2 at a room temperature,
wherein the electrolytic copper foil includes nickel, the nickel, which serves as a seed in synthesis of graphene on the electrolytic copper foil, reduces electrical conductivity after the synthesis of the graphene on the electrolytic copper foil so that the graphene is uniformly formed on a surface of the electrolytic copper foil, and
wherein a resistance of the copper foil after the synthesis of the graphene on the electrolytic copper foil is equal to or less than 300 Ω/square.
2. The electrolytic copper foil of claim 1 , wherein the thermal treatment is carried out at a temperature of 180 to 220 degrees Celsius for 50 to 80 minutes.
3. The electrolytic copper foil of claim 1 , wherein a thickness of the electrolytic copper foil is 4 to 70 μm.