▎ 摘　　要

NOVELTY - Cathode sheet comprises composite binder, the composite binder is obtained by mixing the polyacrylonitrile copolymer and acrylonitrile-styrene-butadiene rubber in a mass ratio of 1-4:2-5. USE - The cathode sheet is useful in lithium-ion batteries (claimed). ADVANTAGE - The cathode sheet has excellent adhesion and excellent tensile properties; can well adapt to the volume expansion of the silicon cathode, and improves the gram capacity and first effect of the silicon-containing negative electrode lithium battery. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing cathode sheet. The method utilizes cathode active material, conductive agent, N-methylpyrrolidone.