▎ 摘　　要

NOVELTY - Preparing silicon carbon cathode for lithium-ion battery comprises ball milling graphite to obtain pre-stripped graphite, dispersing the pre-stripped graphite in weakly acidic solution containing dispersant to obtain first mixed solution, dispersing silicon oxide (SiOx) in graphene oxide solution, ultrasonically stirring and dispersing to obtain second mixed solution, under strong stirring condition, slowly adding the second mixed solution into first mixed solution to obtain third mixed solution, centrifuging and separating third mixed solution, adding the separated solid into the emulsified asphalt to obtain SiOx/carbon (C) hydrogel, and drying to obtain SiOx/C composite material, and subjecting SiOx/C composite material to high-temperature thermal reduction treatment at 700-1200°C for 1-5 hours under atmospheric protection to obtain silicon-carbon cathode material. USE - Method for preparing silicon carbon cathode for lithium-ion battery, that is used in button cell (claimed). ADVANTAGE - The method: uses SiOx material, which is introduced between the graphite sheets by the way of separating and restoring the graphite layer structure; increases the loading of silicon-based materials; introduces graphene into the composite material, which solves the problem of poor conductivity of silicon-based materials and can greatly improve the rate performance of electrode materials; utilizes the adsorption characteristics and high-temperature shrinkage characteristics of asphalt in porous materials to obtain silicon-carbon composite cathode with graphite-like structure, and has excellent cycle performance and excellent rate performance. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: ilicon carbon cathode for lithium-ion battery prepared by the above-mentioned method; button cell, prepared by using the silicon carbon cathode for lithium-ion battery; and a method for preparing the button cell.