▎ 摘　　要

NOVELTY - Molybdenum dioxide (MoO2)/amorphous carbon coated silicon carbon composite material comprises 5-42 wt.% silicon material, 57.5-95 wt.% carbon-based material and amorphous carbon and 0.05-0.5 wt.% MoO2. The MoO2 is dispersed in amorphous carbon to form MoO2 amorphous carbon coating layer. The silicon material and carbon-based material are composited to form silicon-carbon composite material. The MoO2 amorphous carbon coating layer is coated on surface of silicon-carbon composite material. USE - MoO2/amorphous carbon-coated silicon-carbon composite material used in cathode material of lithium ion battery (all claimed). ADVANTAGE - The MoO2/amorphous carbon-coated silicon-carbon composite material has excellent electrochemical performance, provides good electronic transmission channel, and improves the conductivity of the composite material. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: 1. a method for preparing MoO2/amorphous carbon coated silicon-carbon composite material, which involves: a. mixing 10-40 wt.% silicon material, 40-70 wt.% carbon-based material, 1-20 wt.% binder and 5-30 wt.% organic solvent to prepare mixed slurry; b. drying mixed slurry to obtain silicon-carbon composite material; c. mixing ammonium molybdate ((NH4)4Mo7O24), amorphous carbon raw material and a first solvent to obtain a first liquid dispersion; d. mixing the silicon-carbon composite material and first liquid dispersion to form a mixture, and heating mixture to obtain MoO2-doped amorphous carbon wet gel, drying MoO2-doped amorphous carbon wet gel to obtain MoO2-doped amorphous carbon dry gel; and e. pyrolyzing MoO2-doped amorphous carbon xerogel to obtain MoO2 amorphous carbon-coated silicon-carbon composite material; 2. a cathode material, which comprises MoO2/amorphous carbon coated silicon carbon composite material; and 3. a lithium-ion battery, which comprises positive electrode, negative electrode and electrolyte, where negative electrode comprises negative electrode material.