▎ 摘　　要

NOVELTY - Improving the graphene lithium storage capacity through the introduction of organosilicon functional groups comprises (i) preparing graphene oxide by hummer method, using Boehm titration to determine the total mol/g content of hydroxy and carboxy groups per unit mass of graphene oxide, (ii) adding graphene oxide to a tetrahydrofuran solution, ultrasonic vibration for 10-60 minutes, adding triethylamine and trimethylchlorosilane with different multiples of total hydroxy and carboxy groups of graphene oxide, adding the content of triethylamine and trimethylchlorosilane in the same multiples, reacting for 12-24 hours, removing the tetrahydrofuran solution by filtration under the pressure of 0.1-0 MPa, and (iii) vacuum drying the silicone-modified solid obtained by filtration at the temperature of 60-200 degrees C, removing the triethylamine hydrochloride formed by the modification reaction by sublimation, and obtaining porous organosilicone modified graphene cathode material. USE - The method is useful for improving the graphene lithium storage capacity through the introduction of organosilicon functional groups. ADVANTAGE - The method is simple and economical, which is more suitable for large-scale preparation of high-capacity lithium ion battery electrode materials. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for manufacturing an electrode sheet, using porous organosilicone modified graphene comprising (i) grinding the porous organosilicon modified graphene anode material, conductive agent, and binder in an agate mortar uniformly in the mass ratio of 8:1:1, where the conductive agent is acetylene black, SP, the binding agent is polyvinylidene fluoride or polyvinylidene fluoride, (ii) adding nitrogen methylpyrrolidone to the agate mortar, and continuously grinding until a uniform thick slurry is formed, (iii) wiping the copper foil with alcohol, blow drying, placing the ground slurry on the surface of the copper foil, and using an automatic film applicator to evenly coat the slurry on the copper foil, (iv) placing the electrode sheet in the air, performing preliminary drying at 80 degrees C to remove N-methyl-2-pyrrolidone, and transferring to a vacuum drying box and drying at 120 degrees C for 12 hours to completely remove N-methyl-2-pyrrolidone, and (v) using punching machine to cut the electrode sheet into a disc with a diameter of 11 mm.