Patent ID: 8460809

Claim:
An electrochemical cell comprising: a cylindrical container having positive and negative terminals; an organic, non-aqueous electrolyte; an electrode assembly having an anode consisting essentially of lithium or a lithium alloy strip having a thickness, 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; a first lead establishing electrical connection between the cathode to the positive terminal and a second lead establishing electrical connection between the anode to the negative terminal; wherein the anode and the cathode are spirally wound so that at least 50% of an outermost surface of the electrode assembly, excluding the separator and optional non-active components, is covered by the cathode; and wherein the cathode at the outermost surface includes a terminal edge oriented in a substantially axial direction relative to the cylindrical container and the electrode assembly further comprises one selected from the group consisting of: a) a lithium or lithium-alloy patch, oriented in the axial direction and attached to an outermost wind of the anode directly underneath the terminal edge of the cathode, and wherein the second lead is attached to the outermost wind of the anode on the outermost surface of the electrode assembly; and b) a lithium or a lithium alloy combined patch-lead, oriented in the axial direction and attached to the anode, and wherein the combined patch-lead acts as the second lead for the cell.