▎ 摘　　要

NOVELTY - A flexible stannous oxide nano sheet/carbon nanotube-graphene three-dimensional composite material preparing method involves preparing three-dimensional graphene foam. Carbon nanotube-graphene foamed three-dimensional composite material is prepared followed by growing stannous oxide nano sheets by dissolving tin chloride dehydrate and urea in water, and subjecting to dispersion to give a mixed solution C, adding solution C to autoclave, removing impurities-dimensional graphene composite foam polytetrafluoroethylene autoclave immersed in solution C, cleaning to obtain finished product. USE - Method for preparing flexible stannous oxide nano sheet/carbon nanotube-graphene three-dimensional composite material. ADVANTAGE - The composite material has good mechanical stability and good flexibility, without breaking or peeling under repeated bending. DETAILED DESCRIPTION - A flexible stannous oxide nano sheet/carbon nanotube-graphene three-dimensional composite material preparing method involves preparing three-dimensional graphene foam by obtaining nickel foam, washing by using ethanol for 3-5 times, after cleaning and placing into quartz tube furnace under argon and hydrogen protection, respectively 500sccm and flow 200sccm pass into a quartz tube furnace, at heating rate of 10-15 degrees C/min in a quartz tube furnace heated to 1000-1050 degrees C and then at 1000-1050 degrees C and a mixed gas of argon and hydrogen reaction for 4-6 minutes, removing the oxide layer of foam, passing hydrogen and argon at a flow rate 50sccm, 10sccm and 800sccm at 1000-1050 degrees C in a quartz tube furnace, stopping passing of methane, argon and hydrogen, respectively, and the flow rate 500sccm and 200sccm pass into a temperature of 1000-1050 degrees C quartz tube furnace, and the quartz tube furnace to 100-120 degrees C/min cooling rate of 1000-1050 degrees C to cool to room temperature to give a black foam, immersing black foam in the mixed solution A for 20-24h to give a three-dimensional graphene foam. Carbon nanotube-graphene foamed three-dimensional composite material is prepared by adding nickel nitrate hexahydrate and cobalt nitrate hexahydrate sequentially to deionized water, ultrasonic dispersion for 15-20 minutes, adding 12-18mmol urea, to obtain a mixed solution B, adding mixed solution B to autoclave, utilizing high temperature tape obtained in three-dimensional graphene foam secured to the glass sheet, to obtain a three-dimensional graphene foam covered with a glass plate, and covering with a three-dimensional graphene foam glass sheet, immersing in a high pressure reaction a mixed solution of the kettle, and sealing the autoclave, placing sealed autoclave in an oven to a high temperature, and high-temperature oven at a heating rate of 3-4 degrees C/min from room temperature to 120-125 degrees C and at temperature of 120-125 degrees C, incubating for 2-3 h, cooling at room temperature, taking out from autoclave, to obtain a nickel cobalt / graphene composites, placing composites in an air atmosphere and a temperature of 350-400 degrees C for 1-2 min, placing nickel and cobalt / graphene composites into a quartz tube furnace, and ethylene, hydrogen and Argon respectively 20sccm, 40sccm and flow 10sccm pass into the quartz tube furnace, heating rate of 10-15 degrees C/min in a quartz tube furnace of 350-400 degrees C, warming to 750-800 degrees C, at a temperature of 750-800 degrees C and ethylene, hydrogen and argon mixed gas atmosphere reaction for 2-3 min to obtain carbon nanotube / graphene composite containing the catalyst, adding 98% nitric acid solution to the autoclave, immersing into the mass fraction of 98% nitric acid solution, sealing the autoclave, and placed in a sealed autoclave to a temperature of 120-125 degrees C for 5-6h, removal of impurities obtained carbon nanotubes - dimensional graphene foam composites, followed by growing stannous oxide nano sheets by dissolving tin chloride dehydrate and urea in deionized water, and subjecting to ultrasonic dispersion for 20-30 min, 10-15 drops/min 30% hydrochloride solution, with stirring at a speed of 400-500 rpm for 20-30 min, to give a mixed solution C, adding solution C to the Teflon autoclave, and carbon nanotubes, removing impurities - dimensional graphene composite foam polytetrafluoroethylene autoclave immersed in a mixed solution C, and sealing autoclave, at 180-185 degrees C for 14-15 h, removing product, cleaning with water and ethanol to give the product after cleaning, dried at 300-350 degrees C under heat for 2-3 h, to obtain finished product.