ELECTRODE ASSEMBLY INCLUDING SEPARATION FILM FOR ENHANCING SAFETY, AND LITHIUM SECONDARY BATTERY COMPRISING SAME

摘要

The present invention relates to an electrode assembly including a separation film for enhancing safety, and to a lithium secondary battery comprising same, and more particularly, to an electrode assembly, wherein the electrode assembly that comprises an anode, a cathode, and the separation film, and further comprises a vaporization substance, which is coated on a surface of the separation film, for generating a gas through electrolysis at a specific pressure, and to a lithium secondary battery comprising the electrode assembly. The electrode assembly and the lithium secondary battery comprising same, according to the present invention, enhance the safety of the battery by comprising the vaporization substance that generates gas through electrolysis in an over-charged state, and significantly reduce decrease in battery capacity due to suppression of resistance increase, by means of coating the vaporization substance on the surface of the separation film rather than on an electrode, thereby rendering superior life property of the battery.