SEPARATOR FOR NON-AQUEOUS SECONDARY BATTERY, METHOD FOR PRODUCING SAME, AND NON-AQUEOUS SECONDARY BATTERY

An embodiment of the present invention provides a separator for a non-aqueous secondary battery containing a porous substrate; and a heat-resistant porous layer that is formed on one side or on both sides of the porous substrate, and that contains a wholly aromatic polyamide, inorganic particles and an ionic material, in which the inorganic particles have an average primary particle diameter of from 0.02 µm to less than 0.1 µm or in which the inorganic particles include a metal sulfate or a metal hydroxide.