Patent ID: 6830847
Filing Date: 2004-12-14
Classification: H01M,Y02E

Abstract:
A zinc/air depolarized cell comprising an anode casing and a cathode casing, an anode material comprising zinc particles and alkaline electrolyte within said anode casing, and a catalytic cathode within said cathode casing, wherein the cathode casing is in the form of a can having an open end and a closed end, and wherein said anode casing is in the form of a can comprising a body having an open end and a closed end and an inside surface and an outside surface, wherein the open end of the anode casing resides within the open end of the cathode casing with electrically insulating material between said anode and cathode casings and abutting at least a portion of said anode casing outside surface, wherein the anode casing has a circumventing peripheral edge surface at the open end thereof, wherein the anode casing comprises a triclad of three different metals comprising stainless steel having a layer of nickel on its outside surface and a layer of copper on the inside surface of said stainless steel, said copper layer in contact with said zinc, wherein at least a portion of each of said three different metals are exposed at the peripheral edge surface of said anode casing, wherein said anode casing peripheral edge surface is plated with at least one layer of a protective metal comprising tin, thereby covering and preventing exposure of said different metals at said peripheral edge surface.