Titanium is a metal that is prone to passivation. In the atmosphere and most acidic aqueous solutions (except for fluorinated acids), the surface of titanium is prone to the formation of a poorly conductive oxide film, which increases the contact resistance of the titanium electrode surface. The existence of contact resistance not only increases energy consumption and reduces the service life of the anode, but also changes the controllability of the electrolytic cell pressure and the type of electrode reaction. Therefore, in the production process of titanium electrode products, it is necessary to coat a metal surface layer with good conductivity and not easy to passivate on the titanium electrode to form various insoluble titanium electrodes.

Titanium anode preparation process: Titanium substrate processing and shaping (titanium material processing and shaping titanium substrate) → Surface treatment of titanium substrate (in order to increase the effective area of the substrate and enhance the adhesion between the coating and the titanium substrate, usually boiling and degreasing with 10% to 15% alkali or coating powder, and then boiling and etching with 10% to 15% oxalic acid) → Coating and firing (According to different usage requirements, prepare halides of Ru, Ir, Sn, Ti, Pd, Ta, Co, Ni, etc. into alcohol solutions in different proportions → coating → drying → oxidation firing, and repeatedly make the required titanium anode) → quality inspection → leaving the factory.