SEPARATOR FOR SECONDARY BATTERY, MANUFACTURING METHOD THEREOF, METHOD FOR MANUFACTURING SECONDARY BATTERY COMPRISING THE SEPARATOR AND SECONDARY BATTERY MANUFACTURED BY THE METHOD

The present disclosure relates to a separator for a secondary battery comprising a porous polymer substrate; a first layer formed on at least one surface of the porous polymer substrate, and comprising inorganic particles and a nonparticulate acrylic polymer having a glass transition temperature of 15° C. or less, wherein the nonparticulate acrylic polymer connects and fixes the inorganic particles; and a second layer formed on an upper surface of the first layer, and comprising a particulate acrylic polymer having a glass transition temperature of 20° C. to 50° C. The separator for a secondary battery according to the present disclosure has good adhesion with electrode and can solve the resistance problem in the presence of the inorganic particles.