▎ 摘　　要

NOVELTY - Preparation of graphene tin-based silicon-based battery anode material involves adding predetermined amount of tin chloride solution to a reactor, stirring, adding solid brown graphene oxide to the solution, vibrating for 1-3 hours with an ultrasonic oscillator, adding predetermined amount of 37% hydrochloric acid solution, stirring for 6-10 hours by a magnetic stirrer, adding hydrazine hydrate, placing the reactor in a water bath, stirring for 8 hours, aging reaction solution at room temperature, filtering, washing such that the pH of liquid is 7, centrifuging resultant product, vacuum-drying for 5-18 hours, obtaining primary product, adding the primary product to an ethanol solution, adding silicon nanoparticles to the solution, vibrating the solution for predetermined with an ultrasonic oscillator, applying the coating, calcining at high temperature for several hours using hydrogen/argon. USE - Preparation of graphene tin-based silicon-based anode material of lithium battery. ADVANTAGE - The method enables preparation of graphene tin-based silicon-based battery anode material by simple process. The anode material improves durability of the battery. DETAILED DESCRIPTION - The solid brown graphene oxide is prepared by adding powdered natural graphite to a reactor, then adding sodium nitrate, placing the reactor in a cold bath, measuring concentrated sulfuric acid through a measuring cylinder, adding concentrated sulfuric acid to the reactor, then adding potassium permanganate to the reactor in multiple portions, reacting, removing the reactor from the cold bath, obtaining brown viscous suspension, adding predetermined amount of water droplets to the brown suspension, maintaining temperature at 80-00 degrees C when the suspension is diluted, aging the suspension, adding a mixture of hydrogen peroxide and distilled water when the temperature of the suspension is reduced to 40-60 degrees C, adding obtained bright yellow graphite oxide dispersion to a centrifuge, removing supernatant of the suspension, washing resultant solid with distilled water, 30% hydrochloric acid and ethanol, respectively, precipitating using petroleum ether, filtering the precipitate using polytetrafluoroethylene membrane, and drying. The silica nanoparticle suspension is prepared by adding predetermined amount of 20% hydrofluoric acid/ethanol solution and silicon nanoparticles to a reactor, aging at room temperature for predetermined period of time, vacuum-drying, adding obtained nano-silicon ions to an ethanol solution, centrifuging obtained suspension, and drying.