▎ 摘　　要

NOVELTY - Preparing single crystal graphene, comprises preparing single crystal graphene by a chemical vapor deposition process; where chemical vapor deposition process comprising In a reaction system that does not contain reducing gas, forming a graphene nucleus on the substrate, and (ii) under the action of reducing gas, and forming single crystal graphene on basis of graphene core. USE - The method is useful for preparing single crystal graphene. ADVANTAGE - The method achieves consistent orientation. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a single crystal graphene prepared by the method.