| abstract |
The invention provides a lithium ion battery pole piece, a preparation method thereof, and a lithium ion battery, belonging to the technical field of lithium ion batteries. The provided method for preparing a lithium ion battery pole piece includes: (1) preparing a slurry; (2) coating the slurry; (3) plasma etching: using plasma etching equipment at room temperature to The pole piece is etched to form holes perpendicular to the surface of the pole piece in the coating; (4) the etched pole piece is rolled and rolled for use. By using the plasma etching method, the graphene distributed in the horizontal direction in the pole piece is selectively etched, which is beneficial to the transport of lithium ions in the pole piece, reduces the steric hindrance effect of graphene, and greatly enhances the lithium ion The ionic conductivity of the battery pole pieces. |