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Foamed nickel for supporting metal nickel and vanadium trioxide composition and preparation method and application of foamed nickel

A vanadium trioxide and metal-loaded technology, applied in metal/metal oxide/metal hydroxide catalysts, vanadium oxide, chemical instruments and methods, etc., can solve the problems of high price, inability to promote, and low storage content. , to achieve the effect of easy application, favorable for large-scale industrial application, and simple synthesis method

Inactive Publication Date: 2020-01-17
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional ideal electrode material that can effectively reduce the hydrogen evolution overpotential is mainly the noble metal Pt, but the storage content of Pt on the earth is very low, and the price is too expensive to achieve large-scale promotion.

Method used

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  • Foamed nickel for supporting metal nickel and vanadium trioxide composition and preparation method and application of foamed nickel
  • Foamed nickel for supporting metal nickel and vanadium trioxide composition and preparation method and application of foamed nickel
  • Foamed nickel for supporting metal nickel and vanadium trioxide composition and preparation method and application of foamed nickel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Step 1, preparation of nickel foam loaded with metal nickel and vanadium trioxide composite

[0034] 4mmol NiCl 2 6H 2 O, 4 mmol NH 4 VO 3 ,0.6g NH 4F and 1.2g of urea were added to 40mL of deionized water, stirred for 30 minutes to disperse evenly, and the obtained mixed solution was placed in a polytetrafluoroethylene-lined steel sleeve, and 5 pieces of nickel foam of 1 square centimeter were placed in it. React in an oven for 9 hours, and after naturally cooling to room temperature, take out the nickel foam, wash it with deionized water, and dry it in a vacuum oven at 60°C. The dried nickel foam is loaded into the quartz ark; the quartz ark is pushed into the central hot zone of the tube furnace, and the flange is sealed; the hydrogen and argon are measured by the rotameter (the hydrogen flow rate is 0.02L min -1 , Argon gas flow rate is 0.08L min -1 ) into the tube furnace after being fully mixed; at 5°C min -1 Raise the temperature of the tube furnace to 50...

Embodiment 2

[0048] 2mmol NiCl 2 6H 2 O, 2 mmol NH 4 VO 3 ,0.3g NH 4 Add F and 0.6g urea to 40mL deionized water, stir for 30 minutes to disperse evenly, place the obtained mixed solution in a polytetrafluoroethylene-lined steel sleeve, put 5 pieces of nickel foam of 1 square centimeter, React in an oven for 9 hours, and after naturally cooling to room temperature, take out the nickel foam, wash it with deionized water, and dry it in a vacuum oven at 60°C. The dried nickel foam is loaded into the quartz ark; the quartz ark is pushed into the central hot zone of the tube furnace, and the flange is sealed; the hydrogen and argon are measured by the rotameter (the hydrogen flow rate is 0.02L min -1 , Argon gas flow rate is 0.08L min -1 ) into the tube furnace after being fully mixed; at 5°C min -1 Raise the temperature of the tube furnace to 500°C at a constant temperature for 60 minutes; then cool down to room temperature naturally, take out the quartz ark, and obtain nickel foam load...

Embodiment 3

[0050] 6mmol NiCl 2 6H 2 O, 6 mmol NH 4 VO 3 ,0.9g NH 4 F and 1.8g of urea were added to 40mL of deionized water, stirred for 30 minutes to disperse evenly, and the obtained mixed solution was placed in a polytetrafluoroethylene-lined steel sleeve, and five pieces of nickel foam of 1 square centimeter were put in. React in an oven for 9 hours, and after naturally cooling to room temperature, take out the nickel foam, wash it with deionized water, and dry it in a vacuum oven at 60°C. The dried nickel foam is loaded into the quartz ark; the quartz ark is pushed into the central hot zone of the tube furnace, and the flange is sealed; the hydrogen and argon are measured by the rotameter (the hydrogen flow rate is 0.02L min -1 , Argon gas flow rate is 0.08L min -1 ) into the tube furnace after being fully mixed; at 5°C min -1 Raise the temperature of the tube furnace to 500°C at a constant temperature for 60 minutes; then cool down to room temperature naturally, take out the...

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Abstract

The invention discloses foamed nickel for supporting a metal nickel and vanadium trioxide composition and a preparation method and application of the foamed nickel. The surface of the foamed nickel isuniformly covered by the composition, nanoparticles form spherical clusters, the particle size is within 20-50 nanometers, the shape is an irregular spherical shape, and the sizes of the spherical clusters range from 0.5 to 1.0 microns. Nickel chloride and ammonium metavanadate are adopted as a nickel source and a vanadium source respectively, and urea and ammonium fluoride are adopted as a precipitant and a control agent, and by using a hydrothermal method and a high-temperature reduction method, a composition Ni-V2O3 / NF of the metal nickel and vanadium trioxide is grown in situ on the surface of the foamed nickel. The metal nickel and vanadium trioxide composition supported by the foamed nickel, which is disclosed by the invention, can be not only used as a working electrode for electrocatalytic hydrogen evolution, but also used in fields such as chlor-alkali industry, electrolysis water technology, and solar electrolysis water to produce hydrogen.

Description

technical field [0001] The present invention relates to the preparation method and application of nickel foam loaded with metal nickel and vanadium trioxide compound. The nickel foam is prepared by hydrothermal and high-temperature reduction methods. The nickel foam has excellent performance in electrocatalytic hydrogen evolution as a catalytic electrode , It also has potential application value in other fields of energy development and environmental protection. Background technique [0002] Traditional energy refers to energy that has been widely used by people and is relatively mature in technology under the current level of science and technology, such as coal, oil, natural gas, water energy, wood, etc., also known as conventional energy. It is the main energy source that promotes social progress and civilization. Among them, coal, oil, and natural gas are the most widely used by people. They are formed in the earth's crust through millions of years (according to the cur...

Claims

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Application Information

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IPC IPC(8): C25B11/03C25B11/06B22F9/22C25B1/04B01J23/847B01J35/00C01G31/02
CPCB22F9/22C25B1/04B01J23/8472C01G31/02C25B11/057C25B11/031C25B11/051C25B11/091B01J35/33Y02E60/36
Inventor 杨化桂张馨予刘鹏飞
Owner EAST CHINA UNIV OF SCI & TECH
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