Abstract: An atmospheric oxygen element with a cathode of activated charcoal and carbon black. A manganese chloride solution is used as electrolyte. The anode consists of zinc sheets. The capacity of this element depends on the amount of MnCl.sub.2. This amount can be increased by adding manganomanganite (MN.sub.2 O3) produced by precipitation with an alkaline solution in the presence of oxygen. During the delivery of current, ZnCl.sub.2 is created, which replaces the bivalent manganese in the manganite with zinc ions and thus dissolves MnCl.sub.2.

Abstract: An atmospheric oxygen element. The element comprises a substantially planar carrier structure comprising a central foil member and conductive sheets on either side thereof, positive electrode plates adhered to each of the guide sheets, a cover for covering the upper surface of the positive electrode plates defining a plurality of openings for allowing the passage of air therethrough, a coating for substantially covering the exterior surfaces of the element, and protective structure for protecting the openings.