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Titanium electrode is a kind of electrode that uses metal titanium as the substrate, and finally forms an oxide coating with electrocatalytic activity on the titanium substrate by sintering and oxidation. It is also known as a Dimensionally Stable Anode(DSA for short) due to its physical dimension stability when in .
Features
1. Strong corrosion resistance, durability and high temperature resistance, high stability, can be used in various media;
2. Lower cost than pure gold and pure platinum anodes, but has similar electrochemical performance;
3. The overpotential for the oxygen evolution reaction is very high, and the overpotential for the hydrogen evolution reaction is very low;
4. It is appropriate for DSA insoluble anodes and has the properties of high output current density, uniform conduction, and low loss.
The preparation methods of titanium electrodes are as follows:
Thermochemical decay
The thermal decomposition process typically involves dissolving metal salt compounds in organic solvents or aqueous solutions, coating the solution on a titanium substrate, heating to volatilize the solvent, and then sintering at a high temperature to decompose and oxidize the salts to produce an oxide coating. Coating techniques include rolling, brushing, and spraying.
Sol-gel technique
In the sol-gel process, metal organic compounds (such metal alkoxides) or inorganic compounds are dissolved in a solvent to produce active monomers, which are then polymerized to form sol and coated on the titanium substrate. The film is sintered at a specific temperature after being dried to create a gel film in order to provide a coating.
Electrodeposition
Coated titanium electrodes are created using the electrodeposition process. Typically, a titanium cathode is used as opposed to an insoluble electrode as an anode. The appropriate metal ions are present in the solution during electrolysis, and these ions are then deposited on the titanium cathode. following drying, high temperature By sintering, the coated titanium electrode is produced.
Sputtering process
The sputtering process produces a dense coating that has a powerful bonding force with the substrate. However, this approach is unsuitable for industrialized large-scale manufacturing because it necessitates the use of specialized equipment, the preparation procedure is very challenging, and the mother liquor is squandered considerably.

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