Patent ID: 7273674

Claim:
An electrochemical cell, which comprises: a) a casing comprising a curved wall extending to an opening closed by a lid; b) an anode comprising a plurality of anode portions joined by anode connecting portions, wherein the anode portions comprise an anode current collector supporting lithium; c) a cathode comprising a plurality of cathode portions joined by cathode connecting portions, wherein the cathode portions comprise a cathode current collector supporting a cathode active material which intercalates with lithium; d) a separator disposed between the anode and the cathode as an electrode assembly housed in the casing with a periphery of the anode and cathode portions substantially following a contour of the curved wall of the casing; e) an electrolyte activating the electrode assembly; f) wherein the cell has either: i) a first cathode portion disposed intermediate first and second anode portions and wherein a combined capacity of a first and second anode faces of the respective first and second anode portions facing opposite sides of the first cathode portion is greater than a capacity of the first cathode portion, or ii) a first anode portion disposed intermediate first and second cathode portions and wherein a combined capacity of a first and second cathode faces of the respective first and second cathode portions facing opposite sides of the first anode portion is greater than a capacity of the first anode portion.