SEPARATOR FOR LITHIUM SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME

Disclosed is a separator for a lithium secondary battery, including: a porous polymer substrate; and a hydrophilic modification layer disposed inside of the porous polymer substrate, or disposed inside of the porous polymer substrate and on at least one surface of the porous polymer substrate, and including a polymer compound represented by Chemical Formula 1 and a surfactant. According to an embodiment of the present disclosure, it is possible to increase the electrolyte wettability and lithium-ion transport rate in a separator by using a polymer compound having a specific structure and a surfactant. Therefore, a battery using the separator may provide improved output characteristics and cycle characteristics.