▎ 摘　　要

NOVELTY - Graphene is prepared by weighing 1 g of expansible graphite and 0.01 g of ferrocene according to mass ratio expansible graphite:ferrocene of 100:1, uniformly mixing in 20 ml sample bottle until materials are uniformly scattered on the bottom of bottle, microwave processing sample bottle for 15 s in microwave oven which is preheated for 1 minute, wherein expansible graphite increases and fills the whole glass bottle, taking out sample bottle, carefully collecting fully expanded graphite, preferably the fully expanded graphite on the upper layer, and soaking 10 mg of fully expanded graphite. USE - A preparation method of graphene (claimed). ADVANTAGE - Preparation method is simple, graphene has high quality and excellent thermostability and electric conductivity and is stable in solution, aggregation of graphene is inhibited, usage amount of raw material is low, and operation of preparation method is convenient and low cost. DETAILED DESCRIPTION - Graphene is prepared by weighing 1 g of expansible graphite and 0.01 g of ferrocene according to mass ratio expansible graphite:ferrocene of 100:1, uniformly mixing in 20 ml sample bottle until materials are uniformly scattered on the bottom of bottle, microwave processing sample bottle for 15 s in microwave oven which is preheated for 1 minute, wherein expansible graphite increases and fills the whole glass bottle, taking out sample bottle, carefully collecting fully expanded graphite, preferably the fully expanded graphite on the upper layer, soaking 10 mg of fully expanded graphite in 20 ml of hydrochloric acid having concentration of 1.2 mol/L, drying for 12 hours in 80 degrees C of air dry oven, filtering, washing with the ethanol to remove hydrochloric acid on the surface and obtain expanded graphite after conducting, adding 10 ml of 1-methyl-2-pyrrolidone organic solution to expanded graphite, scattering 10 mg of expanded graphite in 100 ml of 1-methyl-2-pyrrolidone organic solution, ultrasonic processing for 75 minutes at room temperature, centrifugal-separating obtained product for 5 minutes at 3000 rpm to remove large particles and aggregate, uniformly distributing gray solution, filtering, washing with ethanol, and drying for 12 hours in 80 degrees C of air dry oven to obtain solid graphene. DESCRIPTION OF DRAWING(S) - The drawing shows a scanning electron microscope (SEM) photograph of stable graphene.