Electrode having titanium-based oxide composite coating and manufacturing method thereof

Abstract

The invention provides a Ti-based oxide composite coating electrode which is characterized in low cost, small power consumption and long service life, comprising titanium metal plate vector, an intermediate layer arranged on the surface of the vector and a surface active layer arranged outside of the intermediate layer. Wherein, the composition of the intermediate layer is Sn0<2> and Sb<2>0<3> and the molar ratio of Sn to Sb is 100: (5-15), and the composition of the surface active layer is Sn0<2>, Sb<2>0<3> and Ce0<2> and the molar ratio of Sn to Sb to Ce is 100: (5-15): (0.5-3). The electrode of the invention effectively makes use of non-noble metal electrode, reduces cost of electrode material. Because the intermediate layer is arranged, a bonding force between the surface active layer and the vector is greatly strengthened so as to extend service life. The electrode manufacturing method of the invention comprises steps of polishing the titanium metal plate vector, processing acid etch, coating the intermediate layer on the surface of the titanium metal plate, and coating the surface active layer.

Description

technical field [0001] The invention relates to an electrode used for the electrolysis of electrolyte solution and a manufacturing method thereof, in particular to an electrode with a composite coating for treating organic waste water and a manufacturing method thereof. Background technique [0002] Electrodes have been widely used as anode materials in the field of electrochemistry. In order to improve the corrosion resistance and catalytic activity of the anode electrode, a protective coating of special composition is usually provided on the outer surface of the electrode substrate. At present, the protective coating components of a commonly used electrode include mixed oxides such as iridium and ruthenium. Since iridium and ruthenium are noble metals, electrodes containing these noble metal components are expensive and consume a lot of energy during operation. There are also some electrodes, such as diamond electrodes, Pt electrodes and other precious metal electrodes, w...

AI Technical Summary

Problems solved by technology

At present, the protective coating components of a commonly used electrode include mixed oxides such as iridium and ruthenium. Since iridium and ruthenium are noble metals, electrodes containing these noble metal components are expensive and consume a lot of energy during operation.

There are also some electrodes such as diamond electrodes, Pt electrodes and other noble metal electrodes, which have high raw material costs and high manufacturing costs.

Another common electrode, tin-antimony electrode, does not use precious metals, and the cost is relatively low, but the bonding ability between the surface coating and the carrier is poor, so the coating is easy to peel off and the service life is short

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