metaalkatoden

Metaalkatoden refers to the cathode terminal of an electrochemical cell or device that is constructed from a metallic material. In electrochemistry, a cathode is defined as the electrode where reduction occurs, meaning it is the site where a chemical species gains electrons. The choice of metal for the cathode is critical and depends on the specific application, the electrolyte used, and the desired electrochemical reaction.

Commonly used metals for cathodes include copper, silver, platinum, and various alloys. For instance, in electroplating processes, a metal cathode is often used to deposit a thin layer of another metal onto its surface. The cathode's material properties, such as its conductivity, reactivity, and surface characteristics, influence the efficiency and quality of the electrochemical process. In some battery technologies, the cathode material is a key component determining the battery's voltage and energy density. The term can also extend to the cathode in vacuum tubes or gas discharge lamps where a metal electrode emits electrons, although its primary use is in electrochemical contexts.