SEPARATOR FOR A LITHIUM SECONDARY BATTERY AND A LITHIUM SECONDARY BATTERY COMPRISING THE SAME

摘要

The present invention relates to a separator for a lithium secondary battery and a lithium secondary battery comprising the same. In particular, the separator for a lithium secondary battery of the present invention comprises a thermoplastic polyolefin-based porous polymer sheet; and an aramid-based non-woven sheet laminated on at least one side of the polymer film, wherein the polyolefin-based polymer sheet and the aramid-based non-woven sheet are adhered with an adhesive, and the adhesive loses an adhesive force at a temperature of 80? or higher to separate the two sheets from each other. The separator for a lithium secondary battery of the present invention has a shut-down function, while exhibiting excellent shape stability even at a high temperature.