SILICON-OXYGEN COMPOSITE ANODE MATERIAL, PREPARATION METHOD THEREOF AND LITHIUM-ION BATTERY

The present application relates to a silicon-oxygen composite anode material and the preparation method thereof, and a lithium-ion battery. Wherein the silicon-oxygen composite anode material comprises a silicon-oxygen material and a composite coating layer coating the surface of the silicon-oxygen material. The composite coating layer comprises a carbon material and a lithium-containing compound, the carbon material has pores, and the lithium-containing compound is filled in the pores. The silicon-oxygen composite anode material and the preparation method thereof are simple and low cost, which is also easy to conduct industrial production, moreover, the prepared silicon-oxygen composite anode material has excellent electrochemical cycle and expansion inhibition performance, which can prolong the life-span of a lithium ion battery.