| abstract |
The present invention is a laminated sheet comprising a laminate sheet in which an outer coating layer of a polymer film, a barrier layer of a metal foil and an inner sealant layer are sequentially laminated, and the inner sealant layer is provided with moisture (H 2 O), or an adsorbent material capable of adsorbing carbon dioxide (CO 2 ) generated at an abnormal operating condition or a high temperature of the battery, and a lithium secondary battery including the same will be. The adsorbing material adsorbs carbon dioxide which is a cause of ignition and explosion of the battery at a high temperature and moisture, and separates the carbon dioxide from the internal environment of the battery, thereby suppressing electrolyte side reaction and swelling phenomenon, thereby greatly improving the safety of the battery. |