Patent ID: 8859146
Filing Date: 2014-10-14
Classification: H01M,Y02P,Y10T

Abstract:
1. An electrochemical cell comprising: a container; an organic, non-aqueous electrolyte; an electrode assembly having an anode consisting essentially of lithium or a lithium alloy strip, a cathode comprising iron disulfide at least partially coated onto both sides of a solid, metallic foil current collector and a separator disposed between the anode and the cathode; wherein the cell possesses an interfacial anode under-balance and the anode and the cathode are spirally wound so that less than 50% of an outermost surface of the electrode assembly, excluding the separator and optional non-active components, is covered by the anode; and means for eliminating an edge effect positioned proximate to the cathode in the outermost surface of the electrode assembly that comprises a pore-blocking substance disposed within the cathode coating along an axial strip at a terminal edge of the cathode.