SEPARATOR AND LITHIUM-ION BATTERY INCLUDING THE SAME

Disclosed are a separator and a lithium-ion battery including the separator. The separator includes a coating; the coating includes a first additive and a second additive, and a mass ratio of the first additive to the second additive ranges from 1:9 to 9:1; and the coating includes a plurality of adhesive layer holes, and a pore diameter of the adhesive layer hole ranges from 0.01 μm to 10 μm. In the present disclosure, an electrostatic adsorption capability of a surface on a separator coated with an oil or an oil mixture is reduced, so that fewer particles can be adsorbed, and a self-discharge value of a battery cell can be reduced, thereby improving quality of the battery cell.