Patent ID: 7951479

Claim:
An apparatus, comprising: an anode having an elongate ribbon shape; a cathode having an elongate ribbon shape, the cathode disposed adjacent to and in alignment with the anode; a separator disposed between the anode and the cathode; and a first porous edge film disposed against a cathode first surface, the first porous edge film further disposed around and onto an opposed second cathode surface defining a cathode and separator interface, with the first porous edge film disposed against the separator wherein the first porous edge film protects the separator from contacting an conductive surface of the cathode along the first edge of the cathode and protects the cathode from tearing the separator and contacting the anode, wherein a first adhesive interconnects the first porous edge film to the cathode, the first adhesive covering less than the entirety of the cathode interface, and the anode and cathode are disposed in a case with an electrolyte, and wherein the first adhesive is disposed along the first porous edge film such that one or more areas of the first porous edge film are not covered with the first adhesive.