▎ 摘　　要

NOVELTY - The piece has a silicon-based active material layer arranged between a current collector and a pre-lithiation layer. The silicon-based active material layer is provided with micropores on a side in contact with the pre-lithiation layer. USE - Pre-lithiated silicon-based cathode pole piece for use in a lithium ion battery (claimed). ADVANTAGE - The piece: ensures the cathode exerting high specific capacity; improves the first coulomb efficiency of the cathode of the battery; improves the electrochemical performance of the battery; effectively reduces the consumption of efficient lithium in the electrolyte and battery; reduces the production of the electrolyte liquid injection amount needed by the lithium ion battery and the generation of the gas when the lithium battery product works; simplifies the production process and formation process of lithium ion battery; and solve the problem that the solid electrolyte interface (SEI) formation in the conventional lithium battery is unstable. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparation method of pre-lithiated silicon-based cathode pole piece.