Although the appearance of each of these cells is simple, the explanation of its operation is far from be and led to a great scientific activity in the nineteenth and twentieth centuries and various theories.
batteries are basically two metal electrodes immersed in a liquid, solid or paste which is called electrolyte. The electrolyte is a conductor of ions.
When the electrodes react with the electrolyte, one electrode (the anode) will produce electrons (oxidation), and the other (cathode) there is an absence of electrons (reduction). When the excess electrons from the anode to the cathode pass through an external conductor to the battery produces an electric current.
As seen in the background is an oxidation reaction and a reduction to occur simultaneously.
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