▎ 摘　　要

NOVELTY - The method for rapidly preparing large-sized single crystal graphene, involves introducing pre-configured standard mixed gas into chemical vapor deposition system, carrying out chemical vapor deposition on the surface of the copper foil to obtain large-sized single crystal graphene. The standard mixed gas is selected from high purity methane, high purity hydrogen and/or high purity argon. The methane is used as a carbon source for graphene growth. The copper foil is used as a growth catalytic substrate for graphene. USE - Method for rapidly preparing large-sized single crystal graphene. ADVANTAGE - The method enables rapid preparation of large-sized single crystal graphene with increased purity and high repetition rate.