Abstract: An electrochemical cell having a cell housing that contains an active anode material and an active cathode material. An electrically conductive current collector member within the cell housing is in electrical contact with one of the active materials, and an electrically conductive pin member having a first portion protrudes from the cell through an orifice in the cell housing. A sealing member is disposed in the the orifice between the pin member and the cell housing to seal the interior of the cell from its surroundings. A second portion of the electrically conductive pin member is both releasably secured within an aperture in the current collector member and in electrical contact with the current collector member, so that when the pressure within the cell exceeds a predetermined pressure limit, the pin member is ejected from the cell and the excessive internal pressure is then vented.

Abstract: A sealing gasket for an electrochemical cell disposed between the cell container and cover comprising an annular sidewall and an inwardly extending base flange, said sidewall having a nonuniform thickness such that the average thickness of that quarter of said sidewall immediately above said flange is greater than the average thickness of the sidewall at its top quarter, thereby enabling increased sealing surface area and increased terminal clearance.

Abstract: A hermetically sealed electrochemical cell system of the Li/MnO.sub.2, Li/SO.sub.2, Li/C.sub.2 F or Li/CF.sub.x type having its lithium anode electronically connected to the cell housing thereby rendering the housing the anodic terminal of the cell. A terminal pin extends into the housing and is electronically insulated therefrom by a glass-to-metal hermetic seal. All metal components of the cell electronically connected to the cathode including the terminal pin and cathode collector are made of a non-ferrous metal such as molybdenum to decrease the deposition of a conductive corrosive material on the glass-to-metal seal and resulting corrosion of the seal, thereby increasing the shelf life of the cell.

Abstract: An improved sealing gasket for an electrochemical cell having an outer upstanding flange adapted for being compressed between the upper sidewall of the container and the peripheral edge of the cover to seal the cell, and an inner upstanding flange adapted to be turned over the peripheral edge of the separator so as to effectively secure and isolate the cathode disposed under the separator from the anode and the cover of the cell.

Abstract: A sealed electrochemical cell having a secondary seal comprising a cylindrical sleeve disposed and secured around the upstanding wall of the cell's container, a second cover disposed on top of the cell's primary cover and a gasket compressed between the cylindrical ring and the cover forming said secondary seal.

Abstract: A method for producing a molded metal oxide electrode such as a silver oxide electrode and the electrode so produced for use in electrochemical cells, such as alkaline-zinc cells, which comprises a metal oxide and a minor amount of an ethylene acrylic acid polymer.