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A carbon-coated Fe-doped nise nanomaterial with excellent electrolytic water oxygen evolution performance and its preparation method

A technology of electrolysis of water and carbon coating, applied in the direction of electrolysis components, electrolysis process, chemical instruments and methods, etc., can solve the problems of easy dissolution, poor conductivity, few active sites, etc., and achieve easy adsorption of reactants and good stability , the effect of more active sites

Active Publication Date: 2022-04-19
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitations of its few exposed active sites, easy solubility in electrolyte solution, and poor conductivity, it is still a research difficulty to find effective and economical methods to improve the catalytic activity of transition metal-based catalysts for oxygen evolution reaction.

Method used

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  • A carbon-coated Fe-doped nise nanomaterial with excellent electrolytic water oxygen evolution performance and its preparation method
  • A carbon-coated Fe-doped nise nanomaterial with excellent electrolytic water oxygen evolution performance and its preparation method
  • A carbon-coated Fe-doped nise nanomaterial with excellent electrolytic water oxygen evolution performance and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 0.5 g of ferric nitrate (Fe(NO 3 ) 3 9H 2 O) and 1.0 g of nickel nitrate (Ni(NO 3 ) 2 ·6H 2 O) Add it into 10 ml of water, dissolve it into a uniform mixed solution, then soak the cleaned filter paper in the mixed solution for 2 hours, take out the filter paper after the adsorption is saturated, and use toilet paper to absorb the excess solution on the surface, dry it with 0.5 Put gram of selenium powder together into a tube furnace, under nitrogen atmosphere, first heat to 450 degrees Celsius for 2 hours, then heat to 750 degrees Celsius for 2 hours, then cool down to room temperature naturally to get Fe-NiSe composite electrolytic water oxygen evolution catalyst .

Embodiment 2

[0025] 1.0 g of ferric nitrate (Fe(NO 3 ) 3 9H 2 O) and 2.0 grams of nickel nitrate (Ni(NO 3 ) 2 ·6H 2 O) Add it into 20 ml of water, dissolve it into a uniform mixed solution, then soak the cleaned filter paper in the mixed solution for 2 hours, take out the filter paper after the adsorption is saturated, and use toilet paper to absorb the excess solution on the surface, dry it and mix it with 0.5 Put gram of selenium powder together into a tube furnace, under nitrogen atmosphere, first heat to 450 degrees Celsius for 2 hours, then heat to 750 degrees Celsius for 2 hours, then cool down to room temperature naturally to get Fe-NiSe composite electrolytic water oxygen evolution catalyst .

Embodiment 3

[0027] 0.5 g of ferric nitrate (Fe(NO 3 ) 3 9H 2 O) and 1.0 g of nickel nitrate (Ni(NO 3 ) 2 ·6H 2 O) Add it into 10 ml of water, dissolve it into a uniform mixed solution, then soak the cleaned filter paper in the mixed solution for 1 hour, take out the filter paper after the adsorption is saturated, and absorb the excess solution on the surface with toilet paper, dry it and mix it with 0.5 Put gram of selenium powder together into a tube furnace, under nitrogen atmosphere, first heat to 450 degrees Celsius for 2 hours, then heat to 750 degrees Celsius for 2 hours, then cool down to room temperature naturally to get Fe-NiSe composite electrolytic water oxygen evolution catalyst .

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Abstract

A carbon-coated Fe-doped NiSe nanomaterial with excellent electrolytic water oxygen evolution performance and a preparation method thereof. The method comprises: cutting the filter paper into a rectangular paper strip of 1 × 2 centimeters, washing it repeatedly in ethanol for three times, taking it out and drying it; soaking the clean filter paper in an appropriate amount of ferric nitrate (Fe(NO 3 ) 3 9H 2 O) and nickel nitrate (Ni(NO 3 ) 2 ·6H 2 O) in the mixed solution; the saturated filter paper is taken out from the mixed solution, and then the excess solution on the surface of the filter paper is blotted and dried with toilet paper; the dried saturated filter paper and selenium powder are put into the tube furnace together , and annealed at high temperature under the protection of nitrogen to obtain Fe‑NiSe. The Fe-NiSe obtained by the invention has fast preparation speed and high yield, and has important application value in electrolyzing water for oxygen evolution under alkaline conditions.

Description

technical field [0001] The invention relates to a carbon-coated Fe-doped NiSe nano-catalyst with excellent electrolytic water oxygen evolution performance and a preparation method thereof, belonging to the technical field of inorganic nano-materials. Background technique [0002] For modern society, with the depletion of fossil energy and the increasingly severe environmental pollution, the research on the development of renewable energy and clean energy is becoming more and more important. Hydrogen is an ideal substitute for fossil fuels due to its high energy density, environmental friendliness and renewable characteristics. Electrocatalytic water splitting is an efficient method for producing clean hydrogen energy, but its oxygen evolution reaction (OER) requires an ultrahigh overpotential to complete a four-electron transfer process, thus hindering the rate of the water splitting reaction. Studies have shown that noble metal oxides (such as IrO 2 and RuO 2 ) have high...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/057B01J35/02C25B1/04C25B11/091B01J35/00
CPCB01J27/0573C25B1/04C25B11/04B01J35/33B01J35/40Y02E60/36
Inventor 陈志明杨晓冬王晓梅徐波李村成
Owner UNIV OF JINAN
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