CELL POUCH WITH HIGH INSULATION RESISTANCE

摘要

PURPOSE: A cell pouch is provided to have excellent insulating resistance by preventing penetration of anions generated at operating a cell into a metal layer. CONSTITUTION: A cell pouch includes a sealant layer (10); a metal layer (20) formed on the sealant layer; and an outer layer (30) formed on the metal layer. The sealant layer includes an organic anionic material which is anionic when ionized with a sealing resin. The amount of the anionic material included is 0.5-30 parts by weight per 100.0 parts by weight of the sealing resin. The sealing resin includes polypropylene. The anionic material is that the polypropylene is substituted by at least one among PSS, polyacrylic acid, polymethacrylic acid, polyalcohol, polyphosphate, polymaleic acid and hyaluronic acid.