Foamed nickel-based erbium-doped nickel-cobalt bimetallic phosphide nano array as well as preparation method and application thereof

A nano-array, nickel foam technology, applied in electrodes, electrolysis processes, electrolysis components, etc., can solve the problems of low catalytic activity, long-term corrosion resistance, unsatisfactory electrocatalytic performance and practical industrial application, etc., and achieve catalytic activity. High, improve the intrinsic catalytic activity, optimize the effect of Gibbs free energy

Inactive Publication Date: 2021-07-20
YUNNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, their long-term corrosion resistance, electrocatalytic performance, and practical industrial applications are often unsatisfactory
It is disclosed in the p

Method used

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  • Foamed nickel-based erbium-doped nickel-cobalt bimetallic phosphide nano array as well as preparation method and application thereof
  • Foamed nickel-based erbium-doped nickel-cobalt bimetallic phosphide nano array as well as preparation method and application thereof
  • Foamed nickel-based erbium-doped nickel-cobalt bimetallic phosphide nano array as well as preparation method and application thereof

Examples

Experimental program
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Example Embodiment

[0031] The present invention provides a method of preparing a foam-nickel-doped nickel-doped nickel-cobalt bimetalline phosphatine nano-array (ER-NICOP / NF), including the following steps:

[0032] The soluble trivalent nibquide, soluble divalent nickel salt, soluble bvilobal cobalt salt, urea, ammonium fluid, and water, to obtain a mixed solution;

[0033] After soaking the foam nickel with the mixed solution, the hydrothermal reaction is obtained.

[0034] The phosphorus source and the water heat product are calcined in the protective atmosphere to obtain the foam-nickel-plyc-doped nickel-cobalt bimetallic phosphide nano array.

[0035] The invention is not particularly limited for the source of each raw material, and the commercially available goods well known to those skilled in the art can be used.

[0036] The present invention adds soluble trivalent ribs, soluble divalent nickel salts, soluble bvilobal cobalt salts, urea, ammonium fluid, and water to obtain a mixed solutio...

Example Embodiment

[0061] Example 1

[0062] 1 mmol ni (no NO) 3 ) 2 · 6h 2 O, 1mmol Co (NO 3 ) 2 · 6h 2 O, urea (6mmol) and NH 4 F (2.5 mmol) was dissolved in 30 ml of water, stirred for 30 minutes, aged for 1 hour at room temperature. The solution is then transferred to a 50 ml stainless steel autoclave with TEFLON liner, and a piece of foam is 6 cm. 2 , Thickness of 1.5 mm, surface density is 350g · cm -2 Immersion in the reaction solution, maintained at 120 ° C for 6 hours. When the temperature was cooled to room temperature, the obtained NiCO nanowire array precursor (Nico Nwas Precuesor / NF) was washed with water and ethanol and dried overnight at 60 ° C in a vacuum drying tank.

[0063] Nah 2 PO 2 · H 2 O (500 mg) and pre-prepared NICO NWAS Precuesor / NF are placed on the upstream side and center of the tubular furnace, respectively. The sample was then calcined in a Ar atmosphere for 2 hours, the heating rate was 2 ° C · min. -1 . Finally, cooling to room temperature to get NiCOP / NF.

Example Embodiment

[0064] Example 2

[0065] 1 mmol ni (no NO) 3 ) 2 · 6h 2 O, 1mmol Co (NO 3 ) 2 · 6h 2 O, 0.05mmol ER (NO 3 ) 3 · 6h 2 O (molar ratio = 5%), urea (6mmol) and NH 4 F (2.5 mmol) was dissolved in 30 ml of water, stirred for 30 minutes, aged for 1 hour at room temperature. The solution is then transferred to a 50 ml stainless steel autoclave with TEFLON liner, and a piece of foam is 6 cm. 2 , Thickness of 1.5 mm, surface density is 350g · cm -2 Immersion in the reaction solution, maintained at 100 ° C for 10 hours. When the temperature was cooled to room temperature, the obtained ER-NWAS Precuesor / NF was washed several times a few times with water and ethanol and dried overnight at 60 ° C in a vacuum drying tank.

[0066] Nah 2 PO 2 · H 2 O (500 mg) and pre-prepared ER-NICO NWAS Precuesor / NF are placed on the upstream and centers of the tubular furnace, respectively. The sample was then calcined in a Ar atmosphere for 3 hours, and the heating rate was 2 ° C · min. -1 . Finally, coo...

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Abstract

The invention provides a foamed nickel-based erbium-doped nickel-cobalt bimetallic phosphide nano array as well as a preparation method and application thereof, and belongs to the technical field of functional materials and electro-catalytic water decomposition. The preparation method comprises the following steps: mixing soluble trivalent erbium salt, soluble divalent nickel salt, soluble divalent cobalt salt, urea, ammonium fluoride and water to obtain a mixed solution; carrying out hydrothermal reaction on the mixed solution and foamed nickel to obtain a hydrothermal product; and calcining a phosphorus source and the hydrothermal product in a protective atmosphere to obtain the foamed nickel-based erbium-doped nickel-cobalt bimetallic phosphide nano array. Introduction of rare earth element erbium is a promising strategy and can be used for regulating and controlling the microstructure and the electronic structure of the catalyst, so that electrocatalytic reaction kinetics is accelerated.

Description

technical field [0001] The invention relates to the technical field of functionalized materials and electrocatalytic water splitting, in particular to a nickel-cobalt double-metal phosphide nano-array doped with foamed nickel-based erbium and its preparation method and application. Background technique [0002] Electrochemical water splitting is an attractive, low-cost carbon-neutral hydrogen production technology. However, the slow kinetics and high energy consumption of hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) have been a difficult and challenging task for water splitting. In order to explore high performance and high stability bifunctional As electrocatalysts, and to replace noble metal-based catalysts (Pt-based and Ir- / Ru-based oxides), it is necessary to construct highly active, cost-effective non-noble metal bifunctional electrocatalysts. [0003] Transition metal phosphides (TMPs) are promising non-noble metal bifunctional electrocatalyst...

Claims

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Application Information

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IPC IPC(8): C25B11/091C25B1/04C25B11/031C25B11/052
CPCC25B1/04Y02E60/36
Inventor 胡广志张华陈安然贾秀秀
Owner YUNNAN UNIV
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