Slurry for porous membrane of secondary battery separator, porous membrane for secondary battery separator and method for producing the same, separator for secondary battery, and secondary battery

摘要

This porous film slurry for a secondary battery separator contains non-conductive particles, a porous film binder, and a medium, and the porous film binder contains: a porous film binder (A) that is in a particle form and that has a potential degree of swelling with respect to a non-aqueous electrolyte after porous film formation of less than a factor of 10; a porous film binder (B) that is in a particle form and that has a potential degree of swelling with respect to the non-aqueous electrolyte after porous film formation of a factor of 10-50; and a porous film binder (C) that is in a non-particle form and that has a potential degree of swelling with respect to the non-aqueous electrolyte after porous film formation of less than a factor of 5.