▎ 摘　　要

NOVELTY - Preparing graphene membrane from graphite liquid carbon dioxide suspension comprises graphite, liquid carbon dioxide, an insulating bucket, a stirrer and a volatile plate having ultra-low viscosity, super-strong fluidity, super-strong permeability and super-adsorption, weighing liquid carbon dioxide having specific gravity of 1.101 and boiling point of -78.5 and graphite powder having specific gravity of 2.25, adding into the insulating bucket including stirrer, breaking the graphite particles into a suspension having free carbon atoms and mixing uniformly by stirring, injecting the quantitative suspension into a high level volatile plate based on the area of the volatile plate and allowing the liquid carbon dioxide to evaporate to obtain the graphene membrane at the bottom of the volatile plate. USE - The method is useful in preparing graphene membrane from graphite liquid carbon dioxide suspension. ADVANTAGE - The method: is simple; utilizes rich source of raw materials; is highly efficient in preparing graphene; easily controls the size, shape and arbitrary thickness of the layer; ensures good promotion and application value.