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Coating titanium anode

A titanium anode and coating technology, applied in the direction of electrodes, electrode shape/type, electrolysis process, etc., can solve problems such as unsatisfactory electrocatalytic performance

Inactive Publication Date: 2008-08-06
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the electrolysis of acidic brine, the electrocatalytic performance of the above two representative electrode materials is not ideal

Method used

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  • Coating titanium anode

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preparation example Construction

[0012] The preparation method of titanium anode of the present invention is:

[0013] (1) The treatment of the base material, that is, the cleaning agent degreasing, degreasing, pickling and etching;

[0014] (2) preparation of active coating liquid;

[0015] (3) The coating of the inner layer coating, the core layer coating and the outer layer coating of the active coating;

[0016] (4) Coating and heat treatment of active coating.

[0017] The specific steps are:

[0018] (1) Taking titanium as the base material, washing it with washing powder solution, soaking it in 10% oxalic acid solution for 2 hours to make the surface of the titanium base form an uneven pockmarked layer, then washing it with distilled water and drying;

[0019] (2) preparation of ruthenium-titanium oxide binary coating solution: raw material is ruthenium trichloride, wherein contains Ru 37wt%, tetra-n-butyl titanate (99%, chemically pure), the coating of ruthenium on every titanium anode The surface...

Embodiment

[0025] An implementation example of the present invention is described in detail below:

[0026] Titanium anodes A1, A2 and A3 were prepared by thermal decomposition method. Among them, A1 is a ruthenium-titanium oxide binary titanium anode, A2 is an iridium-tantalum oxide binary titanium anode, and A3 is a titanium anode with a sandwich structure. The specific steps are:

[0027] (1) With titanium as the substrate, take TA1 with a thickness of 2mm and a specification of 20mm×50mm, wash it with washing powder solution, and soak it in 10% oxalic acid solution for 2 hours, so that the surface of the titanium substrate will form uneven pockmarks layers, washed with distilled water, and dried.

[0028] (2) prepare ruthenium-titanium oxide binary coating liquid, raw material is ruthenium trichloride (containing Ru 37wt%), tetra-n-butyl titanate, and the coating mass surface density of ruthenium on every titanium anode gets 1.5g / m 2 , weigh the source material according to the ...

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Abstract

The invention provides a novel type coating titanium anode, which comprises titanium substrate and anodic active coating. The novel type coating titanium anode is characterized in that: the coating has the three layers of the sandwich type structure, namely, an inner layer coating, a core layer coating and an outer layer coating, wherein the inner layer coating and the outer layer coating are both iridium-tantalum oxide coating, the core layer coating is ruthenium-titanium oxide coating. The novel type coating titanium anode of the invention is a coating which is introduced with the iridium-tantalum oxide coating and the ruthenium-titanium oxide coating, since the hierarchical structure of the sandwich, the preponderances of the chlorine evolution and the oxygen evolution aspects are kept and the corrosion resisting property is good, thereby, the novel type coating titanium anode can proceed electrolysis in acidity salt solution, method for preparing the novel type coating titanium anode is easy, and raw material of the novel type coating titanium anode is easy to obtain.

Description

technical field [0001] The invention belongs to the field of electrochemical industry, and more specifically relates to a new type of coated titanium anode with a sandwich-like structure, which is especially suitable for simultaneous chlorine and oxygen evolution, so it has a higher evolution rate in the electrolysis of acidic saline solutions. Gas activity and high corrosion resistance. Background technique [0002] The electrode material used in the early stage of electrochemistry was artificial graphite. Since Beer first developed the Ti-based ruthenium dioxide coated anode in 1965, it has completely changed the traditional thinking of anode material selection. Since then, the ruthenium-based titanium anode material with ruthenium oxide as the active component has been rapidly popularized and applied in the chlorine analysis electrochemical industry. As a representative ruthenium-titanium oxide coated titanium anode is still one of the most important electrode materials ...

Claims

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Application Information

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IPC IPC(8): C25B11/02C25B11/08
Inventor 陈永毅唐电邵艳群王欣刘雪华颜琦浦达昌
Owner FUZHOU UNIV
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