▎ 摘　　要

NOVELTY - Silicon-carbon cathode material of lithium ion battery comprises a mixture of nano silicon and nano carbon deposited on the surface of a substrate (carbon material) through a plasma-enhanced chemical vapor deposition process. The substrate is in a fluidized state of motion in the deposition zone. The plasma enhanced chemical vapor deposition process is performed in a fluidized plasma vapor deposition furnace, and the fluidized plasma vapor deposition furnace is provided with a anode plate. The cathode plate has a vibration conveying function, and the stirring and feeding mechanism is used to mix the substrate uniformly and transport the substrate from below the negative plate to above the negative plate. The substrate is fluidized and cyclically moved in the deposition area under the action of the vibration of the cathode plate and the stirring and feeding mechanism. USE - Used as silicon-carbon cathode material of lithium ion battery. ADVANTAGE - The material improves performance of the silicon carbon cathode material. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) a preparing the lithium ion battery silicon carbon cathode material comprises (i) introducing the substrate into the fluidized plasma gas phase deposition furnace, and vacuumizing the deposition furnace, (ii) heating the deposition furnace, and making the substrate under the action of the negative plate vibration and the stirring feeding mechanism in the deposition area as the fluidized circulating motion, (iii) introducing diluted gas into the deposition furnace, connecting the plasma generator, alternately adding silicon source gas and carbon source gas, depositing nano-silicon and nano-carbon on the surface of the substrate, nano-silicon deposition, depositing carbon coating film, depositing to obtain the product A, (iv) sieving and filtering the product A; (2) a lithium ion battery silicon carbon cathode material formed by mixing or blending the lithium ion battery silicon carbon cathode material; (3) a lithium-ion battery silicon-carbon cathode material, formed by mixing or blending lithium-ion battery silicon-carbon cathode materials B1, B2 and lithium-ion battery carbon cathode materials; and (4) a device for preparing technique of lithium ion battery silicon carbon cathode material