A short‐circuited electrochemical cell made with a saline electrolyte, an aluminum alloy or magnesium anode, and a manganese dioxide cathode may be used as a rather efficient short‐term portable heater. The use of a magnesium anode provides somewhat higher heat content but results in the production of considerable hydrogen gas. Certain aluminum‐zinc alloys are almost as energetic as magnesium and produce little hydrogen.
Kurzgeschlossene elektrochemische Zellen mit Kochsalzlösungen als Elektrolyten, einer Al‐Legierung oder Mg als Anode und einer MnOz‐Kathode eignen sich als recht effizientes, tragbares Kurzzeitheizgerät. Sie sind ungiftig und haben einen hohen Wärmeinhalt.
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