Figure 1

Schematic of basic synthesis procedure.
Graphene films are converted from coal tar pitch on the top and bottom surface of Ni layer at 1100 °C for 4 min under low vacuum and a reducing atmosphere.

Schematic of basic synthesis procedure.
Graphene films are converted from coal tar pitch on the top and bottom surface of Ni layer at 1100 °C for 4 min under low vacuum and a reducing atmosphere.