galvanic cells

Galvanic cells are devices that generate electricity through chemical reactions between different metals and solutions. They consist of two electrodes (metals) immersed in electrolyte solutions; one metal undergoes oxidation (loses electrons), while the other undergoes reduction (gains electrons). The movement of electrons from the oxidized metal to the reduced metal creates an electric current, which can power devices. This process is the basis for batteries. Essentially, galvanic cells convert chemical energy directly into electrical energy through spontaneous chemical reactions, enabling portable power sources like batteries.