| abstract |
The present invention discloses a separator for an electrochemical device, and an electrochemical device including the separator, the separator comprising: a porous polymer film; and a porous coating layer comprising at least one of inorganic particles and organic particles a particle and a binder polymer formed on one surface or both surfaces of the porous polymer film, wherein the porous polymer film has a configuration that is parallel to the surface of the film a structure in which the fibers are stacked in the layer, and the diameter of the fibers disposed at one surface side of the film on which the porous coating layer is formed is smaller than the diameter of the fibers disposed at a central portion in the thickness direction of the film . |