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An electrolytic cell is an electrochemical cell in which electrolysis takes place. Just like a galvanic cell, electrolytic cells have reduction occurring at the cathode and oxidation occurring at the anode. Unlike in a galvanic cell, however, in which the current is generated spontaneously, in an electrolytic cell a current must be supplied by an external electrical power source for reaction to occur. The result is to force oxidation at one electrode and reduction at the other. A rechargeable battery functions as a galvanic cell when it is doing work and as an electrolytic cell when it is being recharged. Electrolytic cells convert electrical energy into chemical energy.
Electrolysis occurs in electrochemical cells and drives reactions in their nonspontaneous directions through an electric current.Electrolysis can be used to to predict how much products form from an electric current flow.
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