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Preparation method of nitrogen-doped graphitized modified electrode

A technology of graphitization and nitrogen doping, applied in the direction of electrodes, electrolytic components, electrolytic process, etc., can solve the problems of high cost of noble metal catalysts, difficulty in large-scale commercial application, poor durability, etc., and achieve the improvement of alkaline hydrogen evolution reaction performance, improve Hydrogen evolution catalytic activity, low cost effect

Pending Publication Date: 2022-06-07
NANTONG UNIVERSITY
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  • Claims
  • Application Information

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Problems solved by technology

[0007] This application aims at the deficiencies of the existing technology, solves the technical problems of high cost, poor durability and scarcity of noble metal catalysts, and is difficult to carry out large-scale commercial application, and provides a nitrogen-doped graphitization modified electrode preparation method

Method used

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  • Preparation method of nitrogen-doped graphitized modified electrode

Examples

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Embodiment 1

[0029] A nitrogen-doped graphitization modified electrode preparation method, using nickel mesh as a metal nickel substrate to prepare electrodes is as follows:

[0030] Step 1: Place the 60 mesh plain nickel mesh in acetone solution for ultrasonic cleaning for 15 minutes, and then repeatedly clean with ethanol to remove the grease layer on the metal surface;

[0031] The second step: the nickel mesh after removing the grease layer on the metal surface is placed in a hydrochloric acid solution with a concentration of 2mol / L for 15min, and then let stand for 15min, and then repeatedly cleaned with distilled water to remove the oxide layer on the metal surface, and after drying, the nickel mesh after surface cleaning treatment is obtained;

[0032] Step 3: The nickel mesh after surface cleaning treatment is placed in a hydrothermal kettle containing 10mmol / L ammonium molybdate, 16mmol / L potassium molybdate and 48mmol / L potassium fluoride mixed solution, the reactor filling degree is...

Embodiment 2

[0037] A nitrogen-doped graphitization modified electrode preparation method, using foam nickel as a metal nickel substrate to prepare electrodes is as follows:

[0038] Step 1: Place the nickel foam in acetone solution for ultrasonic cleaning for 10min, and then repeatedly clean with ethanol to remove the grease layer on the metal surface;

[0039] Step 2: The foam nickel after removing the grease layer on the metal surface is placed in a hydrochloric acid solution with a concentration of 3mol / L for 10 min, and then let stand for 20 min, and then repeatedly cleaned with distilled water to remove the oxide layer on the metal surface, and after drying, the foam nickel after surface cleaning treatment is obtained;

[0040] Step 3: The nickel foam after surface cleaning treatment is placed in a hydrothermal kettle containing 20mmol / L ammonium molybdate, 26mmol / L sodium molybdate and 68mmol / L ammonium fluoride mixed solution, the reactor filling degree is 80%, the water heat kettle is...

Embodiment 3

[0045] A nitrogen-doped graphitization modified electrode preparation method, the method of preparing the electrode using nickel sheet as a metal nickel substrate is as follows:

[0046]Step 1: Place the nickel sheet in acetone solution for 20 minutes of ultrasonic cleaning, and then repeatedly clean with ethanol to remove the grease layer on the metal surface;

[0047] Step 2: The nickel sheet after removing the grease layer on the metal surface is placed in a hydrochloric acid solution with a concentration of 1mol / L for 20 min, and let stand for 10 min, and then repeatedly cleaned with distilled water to remove the oxide layer on the metal surface, and after drying, the nickel sheet after surface cleaning treatment is obtained;

[0048] Step 3: The nickel sheet after surface cleaning treatment is placed in a hydrothermal kettle containing 10mmol / L ammonium molybdate and 56mmol / L ammonium fluoride mixed solution, the reactor filling degree is 90%, the water heat kettle is heated ...

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Abstract

The invention discloses a preparation method of a nitrogen-doped graphitized modified electrode, which comprises the following steps: carrying out surface cleaning treatment on a metal nickel substrate to obtain a clean metal nickel substrate; performing corrosion treatment based on solvothermal reaction on the metal nickel substrate subjected to surface cleaning treatment in a mixed solution containing molybdate and fluoride; carrying out gas-solid reaction on the metal nickel substrate subjected to corrosion treatment under the protection of inert atmosphere, and carrying out nitrogen-doped graphitization modification on substances on the surface layer of the substrate to obtain the nitrogen-doped graphitization modified electrode, compared with a traditional nickel-based electrode preparation method, based on the hydrothermal reaction, the molybdenum element is introduced to the nickel substrate, a nanorod-shaped surface structure containing bimetal is formed, and the specific surface area of the material is increased.

Description

Technical field [0001] The present invention belongs to the field of cathode electrode technology for electrolyzed water, specifically relates to a nitrogen-doped graphitization modified electrode preparation method. Background [0002] The large-scale use of fossil fuels has led to a growing environmental pollution problem and the rapid depletion of fossil fuels, which has an impact on people's daily lives, so exploring and developing sustainable use of clean energy to replace traditional fossil energy is a major problem that needs to be solved urgently in the field of cutting-edge scientific research. [0003] Clean energy refers to new energy technologies that can effectively reduce greenhouse gas emissions, and is one of the important ways to reduce carbon dioxide emissions. Carbon-free hydrogen energy has become the first choice for clean energy, and the product of hydrogen combustion is water, which is the cleanest energy source in the world. And hydrogen has the characteri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/061C25B11/091C25B1/04
CPCC25B11/061C25B11/091C25B1/04Y02E60/36
Inventor 周清稳王皓轩
Owner NANTONG UNIVERSITY
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