Galvanic Cell
An electrochemical cell in which a spontaneous redox reaction generates electrical energy.
Formula / equation
E°cell > 0
Unit
V
In depth
Electrons flow from the negative anode, where oxidation occurs, through the external circuit to the positive cathode. The cell potential is positive and equals the difference between the two electrode potentials, and it drives current until the reaction reaches equilibrium.
Examples in the real world
Any battery in use; a lemon cell made with zinc and copper strips.