UNIT CELL FOR SECONDARY BATTERY INCLUDING SEPERATOR WITH INSULATING COATING LAYER AND MANUFACTURING METHOD THEREOF

A unit cell for secondary battery according to one embodiment of the present disclosure includes an electrode plate on which a tab is formed, and a separator, wherein the separator comprises a first coating part in which organic/inorganic composite porous coating layer is formed on at least one surface of a base substrate, and a second coating part on which an insulating coating layer is formed.