PTFE Battery Case Comprising PTFE-Based Material

摘要

The present invention provides a battery case, comprising an accommodation unit to which an electrode assembly including a positive electrode, a negative electrode, and a separation film interposed between the positive electrode and the negative electrode can be mounted. The battery case has a lamination structure on which a first polymer resin layer, a metal layer, and a second polymer resin layer are sequentially laminated from an inner surface of the battery case facing the electrode assembly. The second polymer resin layer constituting an outermost layer includes a polytetrafluoroethylene (PTFE)-based material.