▎ 摘　　要

NOVELTY - Preparing graphene aerogels-loaded tin oxide composite materials, comprises (i) stirring graphene oxide solution with deionized water, and subjecting to ultrasonic wave; (ii) dissolving water-soluble tin salts in deionized water, adding graphene oxide and tin salt, and magnetically stirring; (iii) pouring organic amine solution into mixed solution, and magnetically stirring; (iv) adding mixed solution with hot water, maintaining heat, cooling, washing with alcohol, and washing thrice with water; and (v) placing the product into a freeze-drier, and freezing-drying overnight at -52 degrees C. USE - The method is useful for preparing graphene aerogels-loaded tin oxide composite materials (claimed). ADVANTAGE - The method produces product with three-dimensional structure having good electrolyte wettability, and electrical conductivity; controls the growth of tin dioxide particles; reduces the volume expansion of the product due to negative effect, and thus increases the utilization rate of the product as an anode material with good structural stability, and cyclic performance. DETAILED DESCRIPTION - Preparing graphene aerogels-loaded tin oxide composite materials, comprises (i) adding 3 mg/ml graphene oxide solution into 20-50 ml beaker, adding 10-40 ml deionized water, stirring for 20 minutes to mix uniformly, and subjecting the mixture to ultrasonic wave for 1-6 hours; (ii) dissolving 50-200 mg water-soluble tin salts in 10 ml deionized water, adding graphene oxide and tin salt in a mass ratio of 2:1-1:3, and magnetically stirring for 5 minutes, pouring the graphene oxide solution, magnetically stirring for 1-4 hours, and subjecting the mixture to ultrasonic wave for 20 minutes to 2 hours; (iii) pouring 0.1-2 ml organic amine solution into the mixed solution, and magnetically stirring for 30 minutes to 2 hours; (iv) adding mixed solution with hot water placed in a polytetrafluoroethylene kettle, maintaining heat at 80-180 degrees C for 6-24 hours, cooling the reaction kettle to room temperature, washing the product with alcohol in a cylinder, and washing thrice with water; and (v) placing the product into a freeze-drier, and freezing-drying overnight at -52 degrees C, to obtain the product.