Copper foil for producing graphene and method of producing graphene using the same
View Patent ↗A copper foil for producing graphene including Cu having a purity of 99.95% by mass or more.
1. A rolled copper foil for producing graphene including Cu having a purity of from 99.95% by mass to 99.995% by mass, having a concentration of oxygen of 200 ppm by mass or less and having 60 degree gloss in accordance with JIS Z8741 in a rolling direction and 60 degree gloss in accordance with JIS Z8741 in a direction transverse to the rolling direction each of 400% or more, wherein an average crystal grain size of the rolled copper foil is 100 μm or more after heating at 1000° C.
2. The rolled copper foil for producing graphene according to claim 1 , wherein an arithmetic surface roughness Ra in accordance with JIS B0601 of a copper foil surface is 0.25 μm or less.
3. A method of producing graphene using the rolled copper foil for producing graphene according to claim 1 , comprising the steps of:
providing a carbon-containing gas while placing the heated copper foil in a chamber to form graphene on a surface of the copper foil for producing graphene; and
laminating a transfer sheet on the surface of the graphene, and etching and removing the copper foil for producing graphene while transferring the graphene to the transfer sheet.
4. A method of producing graphene using the rolled copper foil for producing graphene according to claim 2 , comprising the steps of:
providing a carbon-containing gas while placing the heated copper foil in a chamber to form graphene on a surface of the copper foil for producing graphene; and
laminating a transfer sheet on the surface of the graphene, and etching and removing the copper foil for producing graphene while transferring the graphene to the transfer sheet.