▎ 摘　　要

NOVELTY - Preparation of irradiated tin dioxide/graphene aerogel nanocomposite material involves using redox reaction of the spherical tin, solder balls and then graphene oxide hydrothermal reaction, and preparing tin dioxide/graphene aerogel nanocomposite. USE - Method for preparing irradiated SnO2/graphene aerogel nanocomposite material used for lithium ion battery. ADVANTAGE - The method is energy-saving and environment-friendly. DETAILED DESCRIPTION - Preparation of irradiated tin dioxide (SnO2)/graphene aerogel nanocomposite material comprises: (A) dissolving phosphorus pentoxide and potassium persulfate in a mass ratio of 1:1 in an appropriate amount of concentrated sulfuric acid and heating at 80 degrees C, then adding 3 g natural graphite to the solution, heating for 4 hours; cooling to room temperature, diluting with 300-400 ml deionized water, allowing to stand for 12 hours; washing, pumping and filtering at 60 degrees C and drying in vacuum oven; (B) adding the resulting precursor to 120 ml concentrated sulfuric acid in an ice bath, stirring slowly, adding 15 g potassium permanganate, maintaining the temperature at 0-5 degrees C; controlling the temperature at 35 degrees C with stirring to a sufficient reaction; adding 250-300 ml deionized water, diluting in an ice bath temperature below 5 degrees C; stirring to 700 ml deionized water, and immediately adding 20 ml of 30% hydrogen peroxide, a mixture of air bubbles into a bright yellow color; (C) allowing the mixture to stand for 12 hours, carrying out suction filtration, and washing with diluted hydrochloric acid, removing part of metal ion filter, washing filter with deionized water, removing acid, dissolving the resulting solid in water, using the ultrasonic dispersion of the solution to obtain graphene oxide solution; (D) at room temperature, adding 0.8 g polyethylene pyrrolidone to 50 ml diethylene glycol and stirring for 10 minutes to obtain white powder, completely dissolving to obtain colorless solution, placing the flask in an oil heating bath, and increasing the temperature to 180 degrees C, adding 1.2 g tin (II) chloride dihydrate at constant temperature for 5-10 minutes; and (E) dissolving 0.8 g sodium borohydride in 10 ml diethylene glycol, rapid stirring with a disposable pipette, after a few seconds, quickly dropwise adding to the conical flask sodium borohydride in diethylene glycol solution at 30 drops/minute, maintaining the temperature at 160-180 degrees C for 10-25 minutes, stopping heating, cooling to room temperature, centrifuging and washing 3 times with ethanol, placing the sample in a vacuum oven at 80 degrees C and drying to obtain pure spherical tin simple substance; and (F) dispersing 0.15 g spherical tin simple substance in halo graphene oxide, adding 1.5 l of 36.5 wt.% hydrochloric acid, fully stirring to obtain sol and carrying out ultrasonic treatment of the obtained sol for 3 hours until the formation of a black gel; transferring sample to 100 ml autoclave at 180 degrees C for 8 hours; cooling the reaction vessel to room temperature, washing the samples several times repeatedly with distilled water to obtain tin oxide/graphene aerogel; and labeling the sample as SnO2/GAs-0; SnO2 /GAs-0 into a GJ-2-II electron accelerator titanium window at an acceleration voltage and current 8 mA 2MeV respectively 140, 280, 560, and 840 kGy dose electron beam irradiation (irradiation according to dose, were named as: SnO2/GAs-140, SnO2/GAs-280, SnO2/GAs-560, and SnO2/GAs-840), all samples were frozen after drying for 18 hours to prepare a lithium-ion battery anode material.