▎ 摘　　要

NOVELTY - The sheet comprises a first cathode active layer arranged on a cathode current collector. The first cathode active layer is provided with a cathode active material. The cathode active material is provided with a composite silicon material and a carbon material. The composite silicon material is provided with multiple base particles. A conductive material is dispersed between the base particles. A surface of the base particles adheres with graphite particles. The conductive material is selected as graphene and conductive carbon tube. The cathode current collector is provided with a second cathode active layer. USE - Cathode sheet for use in a lithium-ion battery (Claimed). ADVANTAGE - Sheet can effectively improve cycle life and safety of the lithium ion battery. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the cathode sheet.