electrochemical cell

An electrochemical cell is a device used for creating an electromotive force (voltage) and current from chemical reactions. The current is caused by the reactions releasing and accepting electrons at the different ends of a conductor. A common example of an electrochemical cell is a standard 1.5-volt battery.
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A device that uses a redox reaction to produce electricity, or a device that uses electricity to drive a redox reaction in the desired direction.