Electrochemical reactions

Electrochemical reactions are chemical reactions that involve the transfer of electrons from one species to another. These reactions can be either oxidation-reduction reactions, in which one species is oxidized (loses electrons) while another is reduced (gains electrons), or they can be electrolysis reactions, in which electrical energy is used to drive a non-spontaneous chemical reaction. In either case, the transfer of electrons is what sets these reactions apart from other types of chemical reactions.