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Foamed nickel loaded Ru-NiO hydrogen evolution reaction catalyst and preparation method thereof

A foamed nickel and catalyst technology, applied in electrolysis components, electrodes, electrolysis process, etc., can solve the problems of high price, poor stability, and low reserves, and achieve large-scale production, improve catalytic activity and stability, and simple operation. Effect

Active Publication Date: 2022-06-03
NANJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large number of experiments have proved that platinum (Pt)-based catalysts have excellent HER activity, but their low reserves, high price and poor stability are not conducive to practical applications.

Method used

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  • Foamed nickel loaded Ru-NiO hydrogen evolution reaction catalyst and preparation method thereof
  • Foamed nickel loaded Ru-NiO hydrogen evolution reaction catalyst and preparation method thereof
  • Foamed nickel loaded Ru-NiO hydrogen evolution reaction catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The foam nickel-supported Ru-NiO hydrogen evolution reaction catalyst of the present invention comprises the following steps:

[0026] (1) the nickel foam of 2cm*4cm is cleaned successively in acetone, ethanol and deionized water, and then the oxide film on the surface is removed by treatment in a dilute sulfuric acid solution with a concentration of 1mol / L;

[0027] (2) Weigh 0.3 g of nickel nitrate hexahydrate, 0.36 g of urea and 0.092 g of ammonium fluoride, dissolve in 30 mL of deionized water and stir well, add the processed nickel foam in (1), and in a reactor at 140° C. The reaction was continued for 12h, and then dried;

[0028] (3) placing the product obtained in (2) in 30 mL with a concentration of 0.02 mol L -1 Electrochemical deposition was carried out in the ruthenium trichloride aqueous solution, the fixed voltage was -1V, the deposition time was 60min, and then dried;

[0029] (4) The product prepared in (3) was subjected to N at 300° C. 2 The final pr...

Embodiment 2

[0031] The foam nickel-supported Ru-NiO hydrogen evolution reaction catalyst of the present invention comprises the following steps:

[0032] (1) the foamed nickel of 2cm*4cm is cleaned successively in acetone, ethanol and deionized water, and then the oxide film on the surface is removed by treatment in a dilute hydrochloric acid solution with a concentration of 2mol / L;

[0033] (2) Weigh 0.36g of nickel nitrate hexahydrate, 0.36g of urea and 0.092g of ammonium fluoride, dissolve in 30mL of deionized water and stir well, add the processed nickel foam in (1), and in the reactor at 160°C The reaction was carried out for 8h, and then dried;

[0034] (3) placing the product obtained in (2) in 30 mL with a concentration of 0.02 mol L -1 Electrochemical deposition was carried out in the ruthenium trichloride aqueous solution, the fixed voltage was -1V, the deposition time was 60min, and it was dried;

[0035] (4) After drying the product obtained in 2), at 350°C N 2 The final pr...

Embodiment 3

[0037] The foam nickel-supported Ru-NiO hydrogen evolution reaction catalyst of the present invention comprises the following steps:

[0038] (1) the nickel foam of 2cm*4cm is cleaned successively in acetone, ethanol and deionized water, and then the oxide film on the surface is removed by treatment in a dilute nitric acid solution with a concentration of 3mol / L;

[0039] (2) Weigh 0.36g of nickel nitrate hexahydrate, dissolve 0.5g of urea and 0.092g of ammonium fluoride in 30mL of deionized water and stir well, add (1) pretreated nickel foam, and in the reactor at 170 React at ℃ for 8h, then dry;

[0040](3) placing the product obtained in (2) in 30 mL with a concentration of 0.02 mol L -1 Electrochemical deposition was carried out in the ruthenium trichloride aqueous solution, the fixed voltage was -1V, the deposition time was 60min, and then dried;

[0041] (4) The product obtained in (3) was subjected to N at 500° C. 2 The final product was obtained by calcining for 3 h...

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Abstract

The invention discloses a nickel foam loaded Ru-NiO hydrogen evolution reaction catalyst and a preparation method thereof, the catalyst carrier is nickel foam and is loaded with ruthenium-doped nickel oxide, and the catalyst is prepared by the following method: taking nickel nitrate hexahydrate as a nickel source, urea and ammonium fluoride as structure-directing agents, and water as a solvent; immersing the carrier into a solution for hydrothermal reaction to generate nickel hydroxide on the surface of the foamed nickel, then carrying out electrodeposition in a ruthenium trichloride aqueous solution to load ruthenium on the surface of the nickel hydroxide, and finally calcining to convert the nickel hydroxide into nickel oxide; according to the catalyst, ruthenium is doped in nickel oxide, so that the catalytic activity and stability of the catalyst for electrocatalytic hydrogen evolution reaction are improved, and the preparation method is simple.

Description

technical field [0001] The invention relates to a catalyst for electrolysis reaction, in particular to a catalyst for hydrogen evolution reaction of Ru-NiO supported by foam nickel and a preparation method thereof. Background technique [0002] The rapid consumption of fossil fuels has brought about problems such as environmental pollution and energy shortage, which have a serious impact on people's lives. Therefore, it is urgent to develop and utilize environmentally friendly and renewable new energy. However, the current mainstream renewable energy sources such as solar energy and wind energy cannot provide energy continuously due to their discontinuity in time and space, thus limiting their wide application. H 2 As an easy-storage, transportable, clean, non-polluting, high-energy-density renewable energy, it is considered as one of the potential candidates for future low-carbon energy systems. Compared with traditional hydrogen production methods, electrocatalytic water...

Claims

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Application Information

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IPC IPC(8): C25B11/091C25B11/054C25B11/061C25B11/031C25B1/04
CPCC25B11/091C25B11/054C25B11/061C25B11/031C25B1/04Y02E60/36
Inventor 唐亚文张嘉晨陆杨金家豪顾雅楠孙瀚君
Owner NANJING NORMAL UNIVERSITY
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