POUCH FOR SECONDARY BATTERY AND SECONDARY BATTERY USING THE SAME

摘要

PURPOSE: A pouch exterior for a secondary battery is provided to prevent corrosion by preventing oxidation of a thin metal film even when microcracks are formed on an internal resin layer. CONSTITUTION: A pouch exterior for a secondary battery comprises an inner resin layer(110), a thin metal layer(130), and an external resin layer(140). A buffer layer with a smaller reactivity than the thin metal layer is formed on the side which is in contact with the thin metal layer. The thin metal layer is formed of aluminum metal. The buffer layer consists of one or more metals selected from copper, silver, platinum, and gold and has a thickness of 100 nm - 10 micron. A secondary battery includes the pouch exterior.