Abstract: Metal-air button cells including a closed cell housing and, arranged therein, an air cathode and a metal-based anode separated from one another by a separator, wherein the cell housing is substantially composed of a first housing half-part and a second housing half-part; the housing half-parts are configured to be cup-shaped and have a base and a circumferential side wall; the base of the second housing half-part has one or more entry and/or exit openings for atmospheric oxygen; and the air cathode is configured to be disc-shaped and is positioned on the base of the second housing half-part such that it covers the entry and/or exit openings and its periphery bears on the inner side of the circumferential side wall of the second housing half-part.

Abstract: Metal-air button cells including a closed cell housing and, arranged therein, an air cathode and a metal-based anode separated from one another by a separator, wherein the cell housing is substantially composed of a first housing half-part and a second housing half-part; the housing half-parts are configured to be cup-shaped and have a base and a circumferential side wall; the base of the second housing half-part has one or more entry and/or exit openings for atmospheric oxygen; and the air cathode is configured to be disc-shaped and is positioned on the base of the second housing half-part such that it covers the entry and/or exit openings and its periphery bears on the inner side of the circumferential side wall of the second housing half-part.

Abstract: A galvanic element includes a mercury-free negative electrode which consists essentially of a metal or a metal alloy and a nonmetallic conductive agent. A method for producing a galvanic element includes a mercury-free negative electrode produced from a powder of metal or metal alloy particles, surfaces of which are at least partially coated with a nonmetallic conductive agent.

Abstract: Apparatus for forming flat galvanic elements, wherein a large number of flat cells are inserted next to one another in recesses in a holder, wherein the recesses have been adapted to suit the cross-section of the cells. Conductor tabs on the flat cells point in the same direction and are clamped between contacting springs in the form of plates arranged on holders. The contacting springs contact both sides of the conductor tabs and have contacting surfaces that are much wider than the conductor tabs.