▎ 摘　　要

NOVELTY - High areal density silicon carbon cathodepole piece comprises current collector, first coating layer close to the current collector and second coating layer coated on the first coating layer. The first coating layer includes graphite anode active material, conductive agent I and binder I, and the second coating layer includes silicon carbon anode active material, conductive agent II, binder II and additives. USE - Used as high areal density silicon carbon cathodepole piece. ADVANTAGE - The cathode electrode pole piece: has high surface density and compaction density, which can improve the energy density and rate performance of the lithium ion battery; and utilizes porous carbon in first coating and second coating can alleviate the volume expansion effect of the silicon carbon cathodeelectrode during the charging and discharging process, and improve the cycle performance and service life.