▎ 摘　　要

NOVELTY - The utility model claims a grapheme lithium ion cathode electrode plate, a negative electrode plate comprises a negative current collector and coating on the cathode current collector of negative electrode active material layer, the negative electrode active material layer is a silicon-based negative active material. a cathode collector and a cathode active material layer are set as concave-convex structures which are matched with the cathode material layer outside is covered with a layer of graphene layer; cathode pole piece of the utility model has higher specific capacity, capable of effectively relieving the expansion and contraction of the charging and discharging process of the silicon material. coating a layer of graphene on the cathode material, has high charge-carrier mobility can improve the conductivity of the whole cathode to realize fast charging and discharging of the battery, and it can prevent the discharging process on the surface of the cathode material of the solid electrolyte interface film (SEI) of increased thickness, prevent the decrease of discharge capacity and improve the cycle performance of the battery.