▎ 摘　　要

NOVELTY - Cathode sheet comprises cathode material, electrolyte and conductive agent, where the conductive agent includes substrate and interface layer, the interface layer is coated on the surface of the substrate, the coating method of the interface layer is point coating, and the ratio of the interface layer in the conductive agent is 0.1-10 wt.%. USE - The cathode sheet is useful in manufacturing solid-state batteries (claimed). ADVANTAGE - The cathode sheet: has interface layer, which is resistant to reduction, coating the interface layer on the surface of the substrate, which can well block the reducing effect of the conductive agent on the electrolyte, reduces the reduction and decomposition of the electrolyte caused by the conductive agent, and improves the cycle performance of the battery. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: Preparing cathode sheet, comprising adding conductive agent, solid electrolyte, cathode material and binding agent into the dispersion solution and mixing uniformly to obtain electrode slurry, coating the electrode slurry on the current collector through a coating machine to obtain composite cathode material, and placing the composite cathode material into an oven, and drying to obtain final product; and Manufacturing solid-state battery, comprising sequentially stacking and hot-pressing anode sheet, electrolyte membrane, and cathode sheet to obtain solid-state battery.