COATED SEPARATOR FOR SECONDARY BATTERY AND METHOD OF MANUFACTURING THE SAME

A coated separator for a secondary battery including a separator substrate including a porous polymer resin; and a coating layer present on at least one surface of the separator substrate. The coating layer includes an inorganic material and a coupling agent, the inorganic material comprises a hydroxide of a metal, or a hydroxide of a metal oxide, and the coupling agent is a titanium-based or a silane-based coupling agent.