Mixed metal oxide (MMO) coated titanium anode, also known as DSA (Dimensionally Stable Anode), also known as DSE anode, is a new type of insoluble anode material developed in the late 1960s. It is made on a titanium substrate. A layer of precious metal oxide (MMO) is coated with a special process to make it have good electrocatalytic activity and conductivity.
Classification of MMO coated titanium anodes:
According to the gas evolved from the anode in the electrochemical reaction to distinguish:
The precipitated is called chlorine evolution anode, such as ruthenium-coated titanium electrode: the precipitated and oxidized is called oxygen evolution anode, such as iridium-coated titanium electrode and platinum coating (or platinum-plated).
1. Chlorine evolution anode (ruthenium-coated titanium electrode): high chloride ion content in electrolyte: generally in hydrochloric acid environment and electrolysis of sea water, electrolysis of salt water environment.
2. Oxygen evolution anode (iridium-coated titanium electrode): The electrolyte is generally sulfuric acid environment.
3. Platinum-plated anode (platinum-coated anode): Titanium is the base material, and the precious metal platinum is plated on the surface. The thickness of the coating is generally 1-10um (micrometer).
Application fields of MMO coated titanium anode:
Chlor-alkali industry, electrolytic organic synthesis, electrolytic extraction of non-ferrous metals, electrolytic silver catalyst production, electrolytic method of manufacturing copper foil, electrolytic oxidation method of mercury recovery, seawater electrolysis, industrial wastewater treatment, power plant cooling circulating water treatment, electrolytic method of acid production Alkaline ionized water, copper plate zinc plating, rhodium plating, palladium plating, gold plating, lead plating, electrodialysis desalination of seawater, cathodic protection, production of anode foil, anodic oxidation of aluminum foil, etc. It is widely used in chemical industry, metallurgy, water treatment, environmental protection, electroplating, electrolytic organic synthesis and other fields.