SEPARATOR AND ELECTROCHEMICAL DEVICE HAVING SAME

摘要

The separator of the present invention comprises: (A) a porous base having pores; and (B) a porous coating layer which is disposed on at least one surface of the porous base and formed to include a mixture of inorganic particles and a binder polymer, wherein the binder polymer comprises a copolymer containing: (a) a first monomer unit including at least one of an amine group or an amide group in a side chain; and (b) a second monomer unit made of (meta) acrylate having an alkyl group of carbon number 1 to 14. Since the porous coating layer included in the separator of the present invention shows high packing density, thinning of a battery can be easily implemented without hindering stability. Additionally, the porous coating layer has a high adhesive strength to the porous base, thereby solving the problem that inorganic particles in the porous coating layer are separated in an assembly process for an electrochemical device.