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Preparation method and application of electro-catalysis electrode material with composite coating

An electrode material and composite coating technology, which is applied in the field of preparation of composite coating electrocatalytic electrode materials, can solve the problems of poor conductivity, difficult production process, instability, etc. long life effect

Pending Publication Date: 2021-12-21
安徽康菲尔检测科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The Chinese patent with the publication number CN 109402586 A reports "a composite coating for electrodes with corrosion resistance and strong conductivity", which adopts the method of magnetron sputtering, which is deposited on a copper alloy substrate and sintered to shape; The electrode is expensive, the coating is thin and the service life is short, and the manufacturing process is difficult to industrialize in batches
[0006] The Chinese patent whose publication number is CN112899715 A reports "a kind of cobalt oxide nanosheet chlorine analysis electrode and its preparation method and application", which adopts the process method of direct deposition of electrochemical deposition carrier; although this method avoids a large amount of organic pollutants However, as a catalytic anode, it is easily oxidized and structurally unstable, with poor coating bonding, thin coating and poor conductivity. In addition, excessive cracks in the catalytic layer will also lead to a rapid collapse of the catalytic electrode structure system and a shorter service life; The electrode is poor in acid and alkali resistance, and its scope of application is limited

Method used

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  • Preparation method and application of electro-catalysis electrode material with composite coating
  • Preparation method and application of electro-catalysis electrode material with composite coating
  • Preparation method and application of electro-catalysis electrode material with composite coating

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Embodiment 1 The preparation method of composite coating electrocatalytic electrode material

[0073] Grind the titanium-based material with 100-mesh, 500-mesh, and 1000-mesh sandpaper respectively to form a certain roughness on the surface, rinse it with deionized water, then perform ultrasonication for 30 minutes, and dry it for later use;

[0074] Alkaline washing and degreasing of the treated substrate material, after cleaning and drying, use oxalic acid etching, after cleaning and drying, heat treatment with high-purity nitrogen gas at 650°C in a tube furnace for later use;

[0075] Prepare the conductive sublayer:

[0076] The main components of the deposition solution are: silver nitrate / copper chloride 0.02moL / L (mixed total concentration), citric acid 0.1moL / L, HCl 10mL / L, TiO 2 Nanoparticles 0.5g / L;

[0077] Electrodeposition time Electrodeposition is carried out in a constant temperature water bath with electromagnetic stirring, where the water bath tempera...

Embodiment 2

[0087] Embodiment 2 The preparation method of composite coating electrocatalytic electrode material

[0088] Titanium substrate pretreatment

[0089] The substrate used is a titanium plate, which is polished with 100 mesh, 500 mesh, and 1000 mesh respectively to form a certain rough surface on the surface, and then dried for later use;

[0090] Cook the polished titanium plate in 10% alkali solution for 1 hour, carry out deoiling treatment, and dry it for later use;

[0091] Digest the alkali-washed titanium plate in 10%wt oxalic acid, hydrochloric acid, sulfuric acid, nitric acid or several mixed acid solutions for 2 hours, and perform corrosion treatment;

[0092] Rinse clean, treat with nitrogen in a tube furnace at 800°C for 2 hours, and use high-voltage electric spark surface treatment for later use; prepare conductive subbase

[0093] Configure the bottom layer electrodeposition solution A, its main composition is as follows:

[0094]

[0095]

[0096] Dissolve,...

Embodiment 3

[0120] Embodiment 3 The preparation method of composite coating electrocatalytic electrode material

[0121] Titanium substrate pretreatment

[0122] The substrate used is a titanium plate, which is polished with 100 mesh, 500 mesh, and 1000 mesh respectively to form a certain rough surface on the surface, and then dried for later use;

[0123] Cook the polished titanium plate in 10% alkali solution for 2 hours, carry out deoiling treatment, and dry it for later use;

[0124] Digest the alkali-washed titanium plate in 10%wt oxalic acid, hydrochloric acid, sulfuric acid, nitric acid or several mixed acid solutions for 2 hours, and perform corrosion treatment;

[0125]Rinse it clean, treat it with nitrogen in a tube furnace at 500°C for 2 hours, and then use high-voltage electric spark surface treatment for later use; prepare a conductive base layer

[0126] Configure the bottom layer electrodeposition solution A, its main composition is as follows:

[0127]

[0128] Disso...

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Abstract

The invention discloses a preparation method of the electro-catalysis electrode material with a composite coating. The preparation method comprises the following five steps: pretreating a titanium substrate, preparing a conductive subbase layer, preparing an anti-oxidation middle layer, preparing a conductive compact middle layer, and preparing a catalyst layer so as to obtain the electro-catalysis electrode material with the composite coating. The electrode material disclosed by the invention has good stability under an enhanced degradation test, has the characteristics of cheap and easily available raw materials, high mechanical strength and good activity, and can rapidly reduce organic matters in wastewater and improve the biodegradability of the wastewater. VOCs are not generated in the method disclosed by the invention, so the method is environment-friendly and energy-saving.

Description

technical field [0001] The invention relates to the field of preparation of electrode materials, in particular to a preparation method and application of a composite coating electrocatalytic electrode material. Background technique [0002] With the continuous progress of my country's electrochemical industry, electrochemical electrodes for various industrial applications are constantly appearing; from the initial inert graphite electrode to the development of various alloy electrodes with catalytic activity, the electrode has achieved long-term stability and huge growth in the electrochemical industry. contribution. At present, the most typical one is titanium metal oxide coated electrode, which is also the most important material supporting industrial development, and its industrial market share is higher than 95%; it is widely used in electrochemical chemical synthesis, chlor-alkali industry, chloric acid Salt production, electroplating and hydrometallurgy, sewage treatme...

Claims

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Application Information

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IPC IPC(8): C02F1/461C25D15/00C25D5/10C25D9/04C02F101/30
CPCC02F1/46109C25D15/00C25D5/10C25D9/04C02F2001/46142C02F2101/30
Inventor 彭旭魏彤郑文贤王光应
Owner 安徽康菲尔检测科技有限公司