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A preparation method of doped tin oxide electrode with long life and high activity for electrolyzing water to produce ozone

A high-activity, long-life technology, applied in the direction of electrodes, electrolytic components, electrolytic processes, etc., can solve the problems of short life of electrode products, limit the application of electrode materials, etc., and achieve the effect of prolonging the service life

Active Publication Date: 2020-11-17
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, nickel-antimony-doped tin dioxide electrodes are usually prepared by pyrolytic coating technology, and the electrode products often have a short service life, usually less than 10 hours, which seriously limits the practical application of this electrode material.
Although the service life of the electrode has been extended by sol-gel, electrodeposition, polymer material compounding, doping and other technologies, the longest service life reported so far is less than 1800 hours.

Method used

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  • A preparation method of doped tin oxide electrode with long life and high activity for electrolyzing water to produce ozone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 1) Firstly, the titanium mesh used for the electrode is placed in an oxalic acid solution and boiled for pretreatment to remove impurities on the surface of the titanium substrate;

[0020] 2) Preparation of intermediate layer coating solution:

[0021] According to the atomic ratio of Mn:Sb:Sn=40:20:100, the intermediate layer coating solution is equipped with manganese-containing tin tetrachloride pentahydrate and ethanol of antimony trichloride;

[0022] 3) Preparation of surface active layer coating solution:

[0023] According to the atomic ratio of Ni:Sb:Sn=2:20:1000, the surface active layer coating solution is equipped with nickel-containing tin tetrachloride pentahydrate and ethanol of antimony trichloride;

[0024] 4) Brush the intermediate layer coating solution on the titanium substrate in step 1) or immerse the titanium substrate in the intermediate layer coating solution, then dry the titanium substrate in an oven at 90°C, and then transfer it to a muffle...

Embodiment 2

[0028] 1) First, the titanium plate used for the electrode is placed in a hydrochloric acid solution and boiled for pretreatment to remove impurities on the surface of the titanium substrate;

[0029] 2) Preparation of intermediate layer coating solution:

[0030] According to the atomic ratio of Co:Sb:Sn=10:10:100, the intermediate layer coating solution is equipped with cobalt-containing tin tetrachloride pentahydrate and isopropanol of antimony trichloride;

[0031] 3) Preparation of surface active layer coating solution:

[0032] According to the atomic ratio of Ni:Sb:Sn=8:50:1000, the surface active layer coating solution is equipped with nickel-containing tin tetrachloride pentahydrate and isopropanol of antimony trichloride;

[0033] 4) Brush the intermediate layer coating solution on the titanium substrate in step 1) or immerse the titanium substrate in the intermediate layer coating solution, then dry the titanium substrate in an oven at 70°C, and then transfer it to...

Embodiment 3

[0036] 1) Firstly, the titanium rod used for the electrode is placed in a sulfuric acid solution and boiled for pretreatment to remove impurities on the surface of the titanium substrate;

[0037] 2) Preparation of intermediate layer coating solution:

[0038] According to the atomic ratio of Ru: Sb: Sn = 60: 50: 100, the intermediate layer coating solution is equipped with ruthenium-containing tin tetrachloride pentahydrate and butanol of antimony trichloride;

[0039] 3) Preparation of surface active layer coating solution:

[0040] According to the atomic ratio of Ni:Sb:Sn=5:80:1000, the surface active layer coating solution is equipped with nickel-containing tin tetrachloride pentahydrate and butanol of antimony trichloride;

[0041] 4) Brush the intermediate layer coating solution on the titanium substrate in step 1) or immerse the titanium substrate in the intermediate layer coating solution, then dry the titanium substrate in an oven at 80°C, and then transfer it to a ...

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Abstract

The invention discloses a preparation method of an electrolytic water generating ozone with a long-service-life and high-activity characteristic doped tin oxide electrode. The method comprises the following steps that firstly, a preparation intermediate layer is coated on a titanium baseboard, wherein the intermediate layer can be a doped tin oxide coating containing one of manganese, cobalt and ruthenium or more elements; a nickel-antimony co-doped tin oxide active layer is further coated and prepared after the preparation of the intermediate layer is finished; and finally the electrolytic water generating ozone with the long-service-life and high-activity characteristic doped the tin oxide electrode is prepared. The preparation method of the electrolytic water generating ozone with the long-service-life and high-activity characteristic doped the tin oxide electrode has the characteristics of being wide in raw material source, simple in technology and efficient and stable in product,and has a good application prospect.

Description

technical field [0001] The invention belongs to the field of environmental protection water treatment / environmental protection materials, and in particular relates to a preparation method of a doped tin oxide electrode for electrolyzing water with long life and high activity to produce ozone. Background technique [0002] Ozone is widely used in wastewater treatment, drinking water disinfection, chemical synthesis and many other fields. Compared with the high-voltage discharge ozone production technology, the electrolysis water production ozone technology has the advantages of low voltage, no harmful nitrogen oxide by-products, no noise, and high ozone concentration. It is a promising ozone preparation technology. The core of this technology is an anode material that can efficiently electrolyze water to generate ozone, and nickel-antimony-doped tin dioxide is a new anode material developed in recent years with this function. The current efficiency of the nickel-antimony dop...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/06C25B1/13
CPCC25B1/13C25B11/091
Inventor 王云海王子轩胡孟华孙宇洁孟令轩杨丹汀
Owner XI AN JIAOTONG UNIV