▎ 摘　　要

NOVELTY - Preparation of single-layer graphene comprises catalyzing and growing graphene on surface of alloy substrate by using chemical vapor deposition method in hydrogen and inert atmosphere, and finishing preparing single-layer graphene. USE - Method for preparing single-layer graphene (claimed). ADVANTAGE - The method uses two or more than two different alloy metals in alloy substrate to control process of discomposing, dispersing and precipitating for carbon source, restrains process of precipitating carbon dissolved in the metal substrate simply with high efficiency, enables graphene to grow by catalyzing on surface and obtains single-layer graphene with uniform layer distribution; and is suitable for industrial production.