Copper Oxide Cell

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Copper Oxide Cell

a chemical current source of comparatively high power, in which the positive electrode consists of a platelike porous cake made of copper oxide (sometimes of powdered copper and its oxide) and a binder, and the negative electrode is made of zinc amalgam or a zinc-mercury alloy. The most widely used electrolyte is a solution of caustic soda (NaOH). The electromotive force of copper oxide cells is 0.88-0.96 volts (V); discharge voltage, 0.7-0.5 V; specific power, 25-35 watt-hr per kg. Copper oxide cells are used mainly in railroad signaling and communications installations and in automatic telephone exchanges.

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