METHOD FOR MANUFACTURING A SEPARATOR FOR AN ELECTROCHEMICAL DEVICE, SEPARATOR AND ELECTROCHEMICAL DEVICE

The present disclosure relates to a method for manufacturing a separator for an electrochemical device, which includes (S1) preparing a coating slurry including a polymer binder, inorganic particles, and a dispersion medium; (S2) heating at least one surface of the porous substrate; and (S3) applying the coating slurry prepared in the step (S1) to at least one surface of the porous substrate heated in the step (S2) to thereby form a porous coating layer, wherein the porous coating layer includes an area, where the polymer binder is filmed, in at least a portion of the surface in contact with the porous substrate.