Electrolytische

Electrolytische, or electrolytic, phenomena describe processes and devices that rely on electrolytes and external electrical energy to drive chemical change. In chemistry, electrolytische processes are non-spontaneous redox reactions carried out in an electrolytic cell with the aid of a power source.

In such cells, an external power supply pushes electrons through the circuit; oxidation occurs at the anode, and reduction occurs at the cathode. The anode is connected to the positive terminal and becomes the site of oxidation, while the cathode, connected to the negative terminal, is reduced. The electrolyte provides ionic conduction, allowing ions to move between electrodes, often involving water or molten salts. Faraday's laws relate the amount of material transformed to the total electric charge passed.

Common applications include electroplating of metals, electrorefining and purification of metals, and industrial production of chemicals, notably chlorine and sodium hydroxide via the chlor-alkali process. Electrolysis of water yields hydrogen and oxygen. In electronics, the term electrolytic is used for devices such as electrolytic capacitors, which store charge using a liquid or gel electrolyte to achieve high capacitance.

Safety and environmental considerations involve handling caustic and reactive electrolytes, managing gases such as chlorine, and controlling energy use and waste streams from electrolytic cells or electroplating operations. The concept has historical roots in early 19th-century electrochemistry and remains central to modern manufacturing, chemical synthesis, and energy technologies.