▎ 摘　　要

NOVELTY - Preparing lithium ion battery silicon oxide anode slurry involves dissolving the graphene powder into the aqueous solution with the dispersant, vacuum stirring, planetary ball milling, using graphene dispersion device for stirring and dispersion, adding styrene butadiene rubber and stabilizer, and then uniformly dispersing to obtain water-based graphene slurry. The dispersant is selected from any one of sodium lignosulfonate, sodium carboxymethyl cellulose, sodium lauryl sulfate, cetyltrimethylammonium bromide, gum arabic, and anionic SAA gum arabic. The stabilizer is selected from any one of sodium citrate, calcium citrate, and sodium alginate. The amorphous carbon layer coated silicon dioxide/copper oxide composite negative electrode material includes silicon oxide and Si-Cu compound particles. The amorphous carbon and the carbon nanotubes attached to the surface of the amorphous carbon, and carbon nanotubes are embedded in the amorphous carbon carbon layer. USE - Method for preparing lithium ion battery silicon oxide anode slurry. ADVANTAGE - The method enables to prepare lithium ion battery silicon oxide anode slurry with excellent electrochemical performance. DETAILED DESCRIPTION - Preparing lithium ion battery silicon oxide anode slurry involves dissolving the graphene powder into the aqueous solution with the dispersant, vacuum stirring, planetary ball milling, using graphene dispersion device for stirring and dispersion, adding styrene butadiene rubber and stabilizer, and then uniformly dispersing to obtain water-based graphene slurry. The dispersant is selected from any one of sodium lignosulfonate, sodium carboxymethyl cellulose, sodium lauryl sulfate, cetyltrimethylammonium bromide, gum arabic, and anionic SAA gum arabic. The stabilizer is selected from any one of sodium citrate, calcium citrate, and sodium alginate. The amorphous carbon layer coated silicon dioxide/copper oxide composite negative electrode material includes silicon oxide and Si-Cu compound particles. The amorphous carbon and the carbon nanotubes attached to the surface of the amorphous carbon, and carbon nanotubes are embedded in the amorphous carbon carbon layer. The silicon dioxide/copper oxide composite negative electrode material is prepared by mixing silicon dioxide and copper oxide uniformly, passing 900-1200 degrees C high temperature treatment, then adding the mixture to deionized water ball mill to obtain a uniformly dispersed silicon dioxide/copper oxide slurry, then adding a certain viscous carbon source and carbon nanotubes for vacuum stirring uniform mixing, spray drying to obtain composite precursor, which is uniformly mixed with another carbon source and placing in the tubular furnace 800-1050 degrees C high temperature pyrolysis to obtain amorphous carbonlayer coated silicon dioxide/copper oxide composite cathode material.