▎ 摘　　要

NOVELTY - Silicon-graphene-enhanced composite aerogel comprises at least carbon and silicon, the carbon element mainly exists in the form of silicon-graphene reinforced composite airgel, the carbon element present in the form of the silicon-graphene enhanced composite aerogel more than 96% of the total mass of the carbon element of the silicon-graphene enhanced composite aerogel, the silicon element is present in the form of silicon nanoparticles, the silicon element is at least partially present in a form wrapped in the graphene, conductive polymer, and lithium-conducting polymer aerogel network, and the wrapped silicon element more than 96% of the total mass of the silicon element, the mass ratio of the silicon element to the carbon element is 2:1-1:2. USE - Used as silicon-graphene-enhanced composite aerogel. ADVANTAGE - The composite gas gel improves the specific capacity of the electrode. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: preparing silicon-graphene-enhanced composite aerogel comprising (i) mixing a uniformly mixed graphene oxide solution, a silicon nanomaterial dispersion, and a dispersion liquid C of a water-soluble reducing agent with a lithium-conducting polymer and a reinforcing agent, and adding the mixture into a closed reactor, (ii) heating the closed reactor to performing reduction and self-assembly of graphene oxide to obtain a silicon-graphene enhanced composite hydrogel and (iii) carrying out low-temperature freezing treatment on the silicon-graphene enhanced composite hydrogel, and drying with a freeze dryer to obtain the silicon-graphene enhanced composite aerogel; electrode prepared by the above method; and preparing electrode comprising (iv) grinding the silicon-graphene enhanced composite aerogel prepared into silicon-graphene enhanced composite aerogel powder, and weighing the silicon-graphene enhanced composite aerogel powder based on the mass ratio of the silicon-graphene enhanced composite aerogel powder to the binder being a: b, where a = 90-95, b = 5-10, and a + b = 100, (v) mixing a silicon-graphene enhanced composite aerogel powder, a binder and a solvent to prepare a slurry, coating the slurry on continuous release paper, and drying and winding to obtain a cathode roll, (vi) slitting the cathode roll based on a required size, and (vii) packaging, casual inspection and shipment.