Our electrodes are divided into three categories. In addition to the platinum electrodes, the first is the chlorine electrode, which is the helium electrode. The chlorine electrode is used in a relatively soft environment, such as the chloralkali industry for water treatment or electrolysis of salt; Oxygen-evolving electrodes, ie, osmium electrodes, are used in harsh environments such as sulfuric acid systems, nitric acid systems, or mixed acid systems.
The selection of titanium electrodes needs to consider the comprehensive environment, one is price, and the other is application..
First, the cost of the osmium electrode is 1/3 of that of the cesium electrode, so the osmium electrode is used in general applications such as chlor-alkali, sodium hypochlorite generator, sodium chlorate, and water treatment. Because niobium has a strong electrocatalytic activity in platinum group elements.
Second, antimony electrodes have particularly strong anti-oxidation, antimony is antimony metal, belonging to the role of stabilizers, used in strong oxidizing environments and media, compared to antimony electrodes for durability, the disadvantage is expensive, and The electrocatalytic activity is relatively weak, and the reaction is high voltage and power consumption in industrial production.