▎ 摘　　要

NOVELTY - A secondary granulation silicon-carbon substrate negative electrode material (200) comprises a carbon substrate (220), nano-silicon (240) embedded in the surface pores of the carbon substrate to form a carbon substrate with nano-silicon embedded in the surface pores, and a modification layer (260) coated on the carbon substrate with nano-silicon embedded in the surface pores. USE - Secondary granulation silicon-carbon substrate negative electrode material is used for battery. ADVANTAGE - The secondary granulation silicon-carbon substrate negative electrode material has excellent liquid permeability (by embedding nano-silicon into the surface pores of the carbon substrate and coating with modification layer), and effectively improves uniformity, cycle performance and stability of the battery. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the secondary granulation silicon-carbon substrate negative electrode material. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the silicon-carbon substrate negative electrode material. 200Silicon-carbon substrate negative electrode material 220Carbon substrate 240Nano-silicon 260Modification layer