▎ 摘　　要

NOVELTY - Lithium-replenishing cathode sheet comprises a current collector and a lithium-replenishing composite cathode film. The lithium-replenishing composite cathode film comprises a lithium belt and a cathode belt. The lithium- replenishing composite cathode film is wound to form a winding structure. USE - The cathode sheet is useful in battery (claimed). ADVANTAGE - The cathode sheet introduces the required supplementary lithium into the inner part of the pole piece; adopts winding structure; achieves the inter-phase distribution of the lithium belt and the cathode active material; achieves the double effect of lithium supplementation and increase rate; enables that the winding structure increases the uniformity of the lithium; reduces the influence of pole piece in the uneven lithium and at the same time, the distribution of lithium in the pole piece will not affect the thickness of the pole piece; ensures that the position of the lithium belt will provide space for the expansion of the active material particles in the pole piece and does not affect the pore size distribution inside the pole piece; does not affect the diffusion of the electrolyte and does not affect the bonding between the active material layer and the current collector in the pole piece, so that the pole piece maintains sufficient peeling force. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing lithium-replenishing cathode sheet comprising (a) stacking and compacting lithium sheet and cathode membranes to obtain lithium-containing cathode membranes, (b) winding the lithium-containing cathode film layer, cutting in parallel to the winding direction to obtain a lithium-replenishing composite cathode film and (c) stacking and compacting the current collector and the lithium-replenishing composite cathode film to obtain the lithium-replenishing cathode sheet. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the process of the preparation method of the lithium-replenishing cathode sheet in battery. 3Lithium sheet 4Cathode membrane