A METHOD FOR MANUFACTURING A SEPARATOR FOR A LITHIUM SECONDARY BATTERY AND THE SEPARATOR FABRICATED BY THE SAME

摘要

The present invention relates to a method for manufacturing an organic-inorganic hybrid porous separator, wherein damage to a separator is minimized and properties such as air permeability can be adjusted easily in the process of manufacturing a separator, and the separator. The separator for a secondary battery manufactured according to the method for manufacturing a separator according to the present invention has excellent heat resistance and mechanical properties owing to little surface defect generation in the process of drying the separator and has excellent air permeability owing to inorganic particles not too much condensed in an organic-inorganic hybrid porous layer. The method for manufacturing a porous separator for a secondary battery comprises the steps of: preparing a porous separator substrate; manufacturing slurry for forming an inorganic-organic hybrid porous layer to be applied to at least one side surface of the porous separator substrate; applying the slurry to at least one side surface of the porous separator substrate; and drying the separator substrate having the slurry applied thereto.