▎ 摘　　要

NOVELTY - Preparation of large-area graphene, involves providing a shear force generated by a liquid stream to a graphite dispersion at a flow rate of greater than 100 m/second where shear force acts on the graphite sheet of the graphite dispersion, so that the graphite sheet is dispersed into a large-area graphene, where the area of large-area graphene is less than 20 and diameter of large-area graphene obtained by Raman spectroscopy is 1-1000 mu m. USE - Preparation of large-area graphene (claimed). ADVANTAGE - A highly graphitized graphite sheet can be dispersed into the large-area graphene without destroying the graphene hexagonal mesh planar structure.