▎ 摘　　要

NOVELTY - A silicon dioxide nanosphere/graphene composite material has amorphous silicon dioxide nanospheres closely attached to the graphene. The silicon dioxide nanospheres have a diameter of 150-250 nm. USE - Silicon dioxide nanosphere/graphene composite material. ADVANTAGE - The silicon dioxide nanosphere/graphene composite material can be prepared using inexpensive raw materials in a simple manner. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of silicon dioxide nanosphere/graphene composite material, which involves: (a) weighing 30 ml ethanol and 3 ml deionized water, fully mixing to prepare an ethanol/water mixed solution, adding 30 mg graphite oxide to the ethanol/water mixed solution, then adding 25 mg surfactant sodium dodecylbenzenesulfonate to obtain a mixed reaction liquid (A), placing the mixed reaction liquid (A) in an ice bath at 0 degrees C, and carrying out ultrasonic treatment until the graphite oxide in the mixed reaction solution (A) is completely dissolved to obtain a mixed reaction solution (B); (b) weighing 25 ml tetraethyl orthosilicate, dripping the tetraethyl orthosilicate into the mixed reaction solution (B), then adding 3 mg sodium hydroxide, carrying out ultrasonic treatment for 15 minutes to obtain a mixed reaction solution (C), stirring the mixed reaction solution (C) for 2 hours using a magnetic stirrer, then transferring the fully stirred mixed reaction solution (C) to a 100 ml PTFE reaction kettle liner, and carrying out reaction at a high-temperature of 160 degrees C for 12 hours; and (c) cooling the reaction kettle to room temperature after the reaction is completed, stirring the obtained black product with ethanol, centrifuging, and drying at 60 degrees C for 12 hours to obtain the target product.