Non-acid medium preparation method of flaky nickel phosphide array electrode material

An array electrode and nickel phosphide technology, applied in the direction of electrodes, electrolysis process, electrolysis components, etc., can solve toxicity and other problems, achieve the effect of improving quality and yield, avoiding waste of reagents, and high utilization rate of nickel atoms

Pending Publication Date: 2022-01-04
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a non-acid medium preparation method for sheet-like nickel phosphide array electrode materials, which specifically solves the toxicity problem of the surface acid treatment and activation process of nickel foam in the prior art

Method used

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  • Non-acid medium preparation method of flaky nickel phosphide array electrode material
  • Non-acid medium preparation method of flaky nickel phosphide array electrode material
  • Non-acid medium preparation method of flaky nickel phosphide array electrode material

Examples

Experimental program
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Effect test

Embodiment 1

[0037] (1) Ultrasonic cleaning with acetone, hydrochloric acid (3mol / L), ethanol and deionized water for 10 minutes in sequence, and drying at 60°C for later use;

[0038] (2) Weigh 328mg of cetyltrimethylammonium bromide, add it into a beaker, then add 5mL of hydrogen peroxide, 5mL of deionized water, and 10mL of ethanol into the beaker, and sonicate for 10min to obtain a clear and transparent solution. Nickel foam with a size of 1×3 cm was added to the above solution, and ultrasonically treated for 10 min. Then the nickel foam and the solution were transferred to a polytetrafluoroethylene hydrothermal kettle for hydrothermal reaction at 180°C for 20h. After naturally cooling to room temperature, take out the activated nickel foam, rinse with deionized water and ethanol three times each, and dry at 60°C for later use;

[0039] (3) Measure 5mL of hydrogen peroxide and 23mL of deionized water into a beaker, sonicate for 10min, then add 2mL of 1mmol / L cetyltrimethylammonium bro...

Embodiment 2

[0042] (1) Ultrasonic cleaning with acetone, hydrochloric acid (3mol / L), ethanol and deionized water for 10 minutes in sequence, and drying at 60°C for later use;

[0043] (2) Weigh 164mg of cetyltrimethylammonium bromide, add it into a beaker, then add 10mL of hydrogen peroxide and 10mL of ethanol into the beaker, and ultrasonicate for 10min to obtain a clear and transparent solution. Nickel foam with a size of 1×3 cm was added to the above solution, and ultrasonically treated for 10 min. Then the nickel foam and the solution were transferred to a polytetrafluoroethylene hydrothermal kettle for hydrothermal reaction at 180°C for 24h. After naturally cooling to room temperature, take out the activated nickel foam, rinse with deionized water and ethanol three times each, and dry at 60°C for later use;

[0044] (3) Measure 5mL of hydrogen peroxide and 22mL of deionized water into a beaker, sonicate for 10min, then add 3mL of 1mmol / L cetyltrimethylammonium bromide solution, and ...

Embodiment 3

[0047] (1) Ultrasonic cleaning with acetone, hydrochloric acid (3mol / L), ethanol and deionized water for 10 minutes in sequence, and drying at 60°C for later use;

[0048] (2) Weigh 328mg of cetyltrimethylammonium bromide, add it into a beaker, then add 5mL of hydrogen peroxide, 5mL of deionized water, and 10mL of ethanol into the beaker, and sonicate for 10min to obtain a clear and transparent solution. Nickel foam with a size of 1×3 cm was added to the above solution, and ultrasonically treated for 10 min. Then the nickel foam and the solution were transferred to a polytetrafluoroethylene hydrothermal kettle for hydrothermal reaction at 180°C for 24h. After naturally cooling to room temperature, take out the activated nickel foam, rinse with deionized water and ethanol three times each, and dry at 60°C for later use;

[0049] (3) Measure 5mL of hydrogen peroxide and 24mL of deionized water into a beaker, sonicate for 10min, then add 1mL of 1mmol / L cetyltrimethylammonium bro...

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Abstract

The invention discloses a non-acid medium preparation method of a flaky nickel phosphide array electrode material. According to the method, a flaky nickel phosphide array is grown on a foamed nickel substrate by adopting a non-acid medium hydrothermal method and a chemical vapor deposition method. The method specifically comprises the following three steps: firstly, mixing hydrogen peroxide, hexadecyl trimethyl ammonium bromide, ethanol and deionized water to serve as a solvent, and performing oxidation activation and crystal face pre-orientation on the surface of foamed nickel through a hydrothermal method; then carrying out hydrothermal reaction on the activated foamed nickel, hydrogen peroxide, deionized water and a hexadecyl trimethyl ammonium bromide solution to obtain a flaky nickel hydroxide array with an ordered crystal face structure; and finally, reacting with sodium hypophosphite through a chemical vapor deposition method to obtain the flaky nickel phosphide array electrode material with a large active crystal face proportion. The hydrofluoric acid etching process is replaced by the hydrogen peroxide oxidation process, so that the method has the characteristics of high efficiency, low cost, low toxicity, environmental friendliness, simplicity in operation and the like, and has a wide application prospect in the field of electro-catalytic hydrogen production.

Description

technical field [0001] The invention belongs to the technical field of electrocatalytic hydrogen production, and in particular relates to a preparation method of sheet nickel phosphide array / foam nickel electrode material. Background technique [0002] As fossil fuels contribute to global warming and pollution, finding clean, renewable alternatives is an urgent need. Electrolyzed water technology is a reliable technology for storing and transmitting wind and solar energy. Theoretically zero pollution can be achieved by generating hydrogen and oxygen. However, the water splitting reaction requires a high overpotential to obtain a suitable reaction rate. Although platinum-based materials and ruthenium-based oxides are the most effective electrocatalysts for hydrogen evolution reaction and oxygen evolution reaction, the scarcity, high cost, and instability of noble metals limit their wide application. At present, people have designed a variety of highly active non-noble metal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/077C25B1/04C25B11/031C25B11/061
CPCC25B11/077C25B11/061C25B11/031C25B1/04Y02E60/36
Inventor 冯苗朱阿元
Owner FUZHOU UNIV
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