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Long-life anode electrode material and preparation method thereof

Active Publication Date: 2021-11-23
杭州兴态环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the harsh operating conditions of fuel cells and electrolyzed water hydrogen production equipment, and the high contact resistance of stainless steel, serious corrosion problems will occur during operation
The current methods of modifying stainless steel materials include heat treatment, gold-silver plating on the surface, carbon film, polyaniline, nitriding and other processes, but the above-mentioned processes are relatively complicated, and it is difficult to mass-produce them, and they cannot meet the requirements of contact resistance and corrosion potential.
[0004] In order to improve the resource utilization of waste water and waste salt, in the zero discharge of waste water, the concentrated brine (salt content > 5%) produced in the waste water process is often used in the electric drive membrane electrolyte to play a conductive role, but the water contained in the waste water Salt wastewater usually contains a certain amount of organic pollution factors. In practical applications, the electrodes of the electro-actuated membrane will be polluted, the voltage will increase, the energy consumption of the electro-actuated membrane will increase, and the efficiency will decrease, which will seriously affect the life of the electro-actuated membrane. Therefore, it is used for The electro-oxidation electrode is used as an electric-driven electrode, which can effectively solve the damage of the waste brine generated in the wastewater process as the anode liquid to the electric-driven membrane electrode, and can realize the removal of organic matter in the anode liquid brine while the electric-driven membrane is working. Pollutants, to achieve the purpose of resource utilization and reduce energy consumption

Method used

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  • Long-life anode electrode material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Prepare a hydrochloric acid solution with a mass fraction of 15%, put it into a water bath and heat it to 80°C, weigh the cut porous titanium, and then etch it for 120min. After taking it out, clean it ultrasonically and dry it. The porous titanium was transferred to an atmosphere furnace, a mixture of hydrogen and argon was introduced (the volume fraction of hydrogen was 5%), the temperature was programmed to 600°C, and after thermal reduction for 1 h, it was naturally cooled to room temperature.

[0047] Transition layer: Weigh tin tetrachloride to make 200mM ethylene glycol, oxalic acid, acetone solution (volume fraction, 80% ethylene glycol, 15% acetone, 5% oxalic acid), and stir for more than 24 hours. Lay the etched titanium sheet flat, dip the tin salt solution with a wool brush and brush it on the surface of the titanium sheet. After the solvent evaporates, transfer the loaded titanium sheet to a muffle furnace, control the temperature at 400°C, and heat After ...

Embodiment 2

[0050] Prepare a solution of oxalic acid with a mass fraction of 15%, put it into a water bath and heat it to 80°C, weigh the cut porous titanium, and perform etching for 120 minutes. After taking it out, clean it ultrasonically and dry it. The porous titanium was transferred to an atmosphere furnace, a mixture of hydrogen and nitrogen was introduced (the volume fraction of hydrogen was 7%), the temperature was programmed to rise to 600 °C, and after thermal reduction for 1 h, it was naturally cooled to room temperature.

[0051] Transition layer: Weigh manganese dichloride to make 200mM ethylene glycol, oxalic acid, acetone solution (volume fraction, 80% ethylene glycol, 15% propanol, 5% acetic acid), and stir for more than 24 hours. Lay the etched titanium sheet flat, dip the tin salt solution with a wool brush and brush it on the surface of the titanium sheet. After the solvent evaporates, transfer the loaded titanium sheet to a muffle furnace, control the temperature at 40...

Embodiment 3

[0054] Prepare a nitric acid solution with a mass fraction of 15%, put it into a water bath and heat it to 80°C, weigh the cut porous titanium, and then etch it for 120min. After taking it out, clean it ultrasonically and dry it. The porous titanium was transferred to an atmosphere furnace, and a mixture of carbon monoxide and argon (the volume fraction of carbon monoxide was 3%) was introduced, and the temperature was programmed to rise to 600°C. After thermal reduction for 1 h, it was naturally cooled to room temperature.

[0055] Transition layer: Weigh cobalt dichloride to make 200mM ethylene glycol, acetone, oxalic acid solution (volume fraction, 80% ethylene glycol, 15% acetone, 5% oxalic acid), and stir for more than 24 hours. Lay the etched titanium sheet flat, dip the tin salt solution with a wool brush and brush it on the surface of the titanium sheet. After the solvent evaporates, transfer the loaded titanium sheet to a muffle furnace, control the temperature at 400...

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Abstract

The invention provides a long-life anode electrode material and a preparation method thereof, and relates to the fields of new materials, new energy and environmental protection, in particular to the technical fields of electro-oxidative degradation of pollutants, electrically-driven membrane pollution-resistant electrodes, hydrogen production through water electrolysis and hydrogen fuel cell electrodes in the environmental protection industry. According to the main technical scheme, the anode electrode material comprises a metal substrate, a transition layer and a noble metal functional coating; the transition layer is deposited on the substrate; the noble metal functional coating is deposited on the transition layer; the transition layer is made of corrosion-resistant and high-potential-resistant metal oxide; and the noble metal functional coating is one or more metals selected from ruthenium, iridium, platinum, gold and silver, and a certain amount of one or more non-noble metals selected from tin, antimony, lead, manganese, nickel, silicon, cobalt and zinc are doped in the noble metal coating. The invention mainly aims at improving the binding force of the electrode coating and the metal substrate, reducing the content of noble metal, improving the efficiency of an electrode and prolonging the service life of the electrode.

Description

technical field [0001] The invention relates to the technical fields of new materials, energy, and environmental protection, and relates to a long-life anode electrode material and a preparation method thereof, in particular to an electro-oxidation coating electrode in the environmental protection field, a pollution-resistant coating electrode in an electric drive membrane, a fuel cell, an electrolytic Preparation method of metal bipolar plate and diffusion layer coating in the field of hydrogen production from water. Background technique [0002] Printing and dyeing, pharmaceutical, petroleum refining, coal chemical and other industries involve a large amount of organic refractory wastewater. Due to the high content of macromolecular organic matter, complex components, and difficult biochemical degradation, it has become a major industry problem. As a potential advanced oxidation technology, electro-oxidation technology has the advantages of simple equipment, non-differenti...

Claims

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Application Information

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IPC IPC(8): H01M8/0206H01M8/0228H01M8/0232H01M8/0245C02F1/461C25B11/093C25B11/053C25B11/063C25B1/04
CPCH01M8/0245H01M8/0232H01M8/0228H01M8/0206C02F1/46109C25B11/093C25B11/063C25B11/053C25B1/04C02F2001/46142Y02E60/36Y02E60/50
Inventor 李想刘长影
Owner 杭州兴态环保科技有限公司
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