▎ 摘　　要

NOVELTY - Preparing graphene involves mixing the nano-particles of the crypto-crystalline graphite nanoparticles and N-methylpyrrolidone to obtain a crystal graphite suspension, adding a micron-sized ceramic ball to the crystal-graphite suspension and stirring for 2-4 hours to convert the crystals of the crystallization suspension into a crystallization paste, stirring the microns-size ceramic ball, driving the nano particles of the crystals to shear in the hidden crystals in the crystals paste, so that the graphene is peeled off from the surface of the particles to obtain the graphene paste, and adding the nano particle of the crystal sheet is 0.09-0.13 g/cm3 into the crystalline paste. USE - Method for preparing graphene used as conductive agent for preparing lithium ion battery (claimed). Uses include but are not limited to mechanical reinforced composite material, gas barrier coating, transparent conductive film, heat management material and energy storage device field. ADVANTAGE - The preparation method of graphene does not introduce defects and heteroatoms. The process is simple and is easy to engineered amplification production, and the peeling efficiency and yield are high, the prepared graphene paste has high concentration.