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

A technology of titanium-based oxides and composite coatings, applied in chemical instruments and methods, electrodes, electrolytic processes, etc., can solve the problems of poor bonding ability between surface coatings and carriers, high raw material costs, and high electrode cost, and achieve low prices , Good electrical conductivity and stable electrode performance

Inactive Publication Date: 2008-10-01
CHINA MEAT RES CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 electrod

Method used

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

Examples

Experimental program
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Example Embodiment

[0024] Example 1

[0025] The manufacture method of the titanium-based oxide composite coating electrode of the present invention comprises the following steps:

[0026] (1) Treatment of the titanium metal plate as a carrier: first polish it with 320-mesh sandpaper, rinse it with water, then polish it with 600-mesh sandpaper to remove surface oxides and dirt, make the titanium metal plate smooth and bright, and then wash it with hot washing powder solution To remove oil stains on the surface of the titanium metal plate;

[0027] (2) Acid etching: Put the titanium metal plate into 10% oxalic acid solution, heat the solution to boiling, and keep boiling slightly for 2.5 hours. The surface of the titanium metal plate is uniform gray pockmarked surface, and then rinse with a large amount of water Impurities such as titanium oxalate and oxalic acid remaining on the surface of the titanium metal plate are then further rinsed with deionized water;

[0028] (3) Coating the intermedi...

Example Embodiment

[0035] Example 2

[0036] The manufacture method of the titanium-based oxide composite coating electrode of the present invention comprises the following steps:

[0037] (1) Treatment of the titanium metal plate as a carrier: first polish it with 320-mesh sandpaper, rinse it with water, and then polish it with 600-mesh sandpaper to remove surface oxides and dirt, so that the titanium metal plate is smooth and bright, and then use 5% Na 2 CO 3 Solution cleaning to remove oil stains on the surface of the titanium metal plate;

[0038] (2) Acid etching: Put the titanium metal plate into 8% oxalic acid solution, heat the solution to boiling, and keep boiling slightly for 2 hours. The surface of the titanium metal plate is uniform gray pockmarked surface, and then rinse with a large amount of water Impurities such as titanium oxalate and oxalic acid remaining on the surface of the titanium metal plate are then further rinsed with deionized water;

[0039] (3) Coating the interme...

Example Embodiment

[0044] Example 3

[0045] The manufacture method of the titanium-based oxide composite coating electrode of the present invention comprises the following steps:

[0046] (1) Treatment of the titanium metal plate as a carrier: first polish it with 320-mesh sandpaper, rinse it with water, then polish it with 600-mesh sandpaper to remove surface oxides and dirt, make the titanium metal plate smooth and bright, and then clean it with a metal cleaner; To remove oil stains on the surface of the titanium metal plate;

[0047] (2) Acid etching: Put the titanium metal plate into 15% oxalic acid solution, heat the solution to boiling, and keep boiling slightly for 3 hours. The surface of the titanium metal plate is uniform gray pockmarked surface, and then rinse with a large amount of water Impurities such as titanium oxalate and oxalic acid remaining on the surface of the titanium metal plate are then further rinsed with deionized water;

[0048] (3) Coating the intermediate layer on...

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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...

Claims

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Application Information

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IPC IPC(8): C25B11/06C02F1/461
Inventor 王守伟杨雅雯汪定国赵燕万波朱百泉李轶伦
Owner CHINA MEAT RES CENT
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