▎ 摘　　要

NOVELTY - A negative electrode sheet comprises a negative electrode current collector and a negative electrode membrane arranged on the current collector. The negative electrode membrane comprises a conductive material, an active material and a binder. The conductive material has a three-dimensional conductive network structure. The active material is attached to the three-dimensional conductive network structure, and is a silicon-lithium composite material made of metal lithium and a silicon-based material. USE - Negative electrode sheet for lithium-ion battery (claimed). ADVANTAGE - The negative electrode sheet has improved dual lithium storage function, high specific energy, cycle improvement and improved interface contact resistance due to use of conductive material having three-dimensional conductive network structure, which ensures the stability of conductive network during the expansion of silicon in the silicon-based material and provides sufficient metal lithium deposition sites. The high specific surface area of the three-dimensional conductive network structure in the conductive material can adsorb electrolyte, improve wetting and improve battery performance. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) preparation of negative electrode sheet; and (2) lithium-ion battery, which comprises a positive electrode sheet, the negative electrode sheet, a separator and an electrolyte.