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Molybdenum doped iron/nickel lamellar array @ nickel foam base composite electrode material and preparing method and application thereof

A composite electrode and nickel foam technology, which is applied in the direction of electrodes, electrolysis process, electrolysis components, etc., can solve the problems of poor catalyst stability, etc., and achieve the effects of good stability, low energy consumption, and convenient industrial production

Active Publication Date: 2018-11-06
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the catalyst for the hydrogen evolution reaction under alkaline conditions has problems such as poor stability, and further research is needed.

Method used

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  • Molybdenum doped iron/nickel lamellar array @ nickel foam base composite electrode material and preparing method and application thereof
  • Molybdenum doped iron/nickel lamellar array @ nickel foam base composite electrode material and preparing method and application thereof
  • Molybdenum doped iron/nickel lamellar array @ nickel foam base composite electrode material and preparing method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The molybdenum-doped iron / nickel layered array@foam nickel-based composite electrode material of the present invention specifically includes the following steps:

[0036] a. Take foam nickel, cut it into 1cm×3cm size, put it in a beaker, add absolute ethanol to submerge, pour out absolute ethanol after ultrasonication for 15min, add 1mol / L dilute hydrochloric acid until submerged, ultrasonication for 15min and then rinse with water spare;

[0037] b. Measure 20 mL of deionized water and place it in a conical flask, then add 0.45 g of ferric nitrate nonahydrate, 0.7 g of nickel nitrate hexahydrate, 0.7 g of ammonium fluoride, 0.05 g of polyethylene glycol (molecular weight: 6000), and urea 0.5g, stirred and ultrasonicated for 15min, until completely dissolved, placed in a 25mL high-temperature autoclave, added the nickel foam treated in step a, then raised the temperature to 120°C for 4h, separated, washed with water, and dried to obtain FeNi-LDHs Nickel Foam in Layered...

Embodiment 2

[0045] a. Take foam nickel, cut it into 1cm×3cm size, put it in a beaker, add absolute ethanol to submerge, pour out absolute ethanol after ultrasonication for 15min, add 1mol / L dilute hydrochloric acid until submerged, ultrasonication for 15min and then rinse with water spare;

[0046] b. Measure 20 mL of deionized water and place it in a conical flask, then add 0.5 g of ferric nitrate nonahydrate, 0.73 g of nickel nitrate hexahydrate, 0.72 g of ammonium fluoride, 0.1 g of polyethylene glycol (molecular weight: 6000), and urea 0.6g, stirred and ultrasonicated for 20min, until completely dissolved, placed in a 25mL high-temperature autoclave, added the nickel foam treated in step a, then raised the temperature to 150°C for 5h, separated, washed with water, and dried to obtain FeNi-LDHs@foam nickel.

[0047] c. Measure 20 mL of deionized water and place it in a conical flask, add 0.0247 g of ammonium heptamolybdate, and ultrasonicate until completely dissolved; immerse the FeN...

Embodiment 3

[0050] a. Take foam nickel, cut it into 1cm×3cm size, put it in a beaker, add absolute ethanol to submerge, pour out absolute ethanol after ultrasonication for 15min, add 1mol / L dilute hydrochloric acid until submerged, ultrasonication for 15min and then rinse with water spare;

[0051] b. Measure 20 mL of deionized water and place it in a conical flask, then add 0.55 g of ferric nitrate nonahydrate, 0.75 g of nickel nitrate hexahydrate, 0.75 g of ammonium fluoride, 0.15 g of polyethylene glycol (molecular weight: 6000), and urea 0.7g, stirred and ultrasonicated for 20min, until it was completely dissolved, placed in a 25mL high-temperature autoclave, added the nickel foam treated in step a, then raised the temperature to 100°C for 6h, and obtained FeNi-LDHs@foam after separation, washing and drying nickel.

[0052] c. Measure 20 mL of deionized water and place it in a conical flask, add 0.0247 g of ammonium heptamolybdate, and ultrasonicate until it is completely dissolved; ...

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Abstract

The invention discloses a molybdenum doped iron / nickel lamellar array @ nickel foam base composite electrode material and a preparing method and application thereof. The material uses foamed nickel asa substrate, an iron / nickel lamellar thermometal hydroxide (FeNi-LDHs) array grows on the surface of the foamed nickel, and the metal molybdenum is doped into the array. According to the preparing method of the material, a hydrothermal method is adopted for directly growing FeNi-LDHs nanosheet arrays on the foamed nickel substrate, then the FeNi-LDHs array is used as a substrate to dope metal Moon the surface of the array through the hydrothermal method, and finally high temperature carbonization and revivification are carried out to obtain the electrode material with the electro-catalytic property. The composite material is stable in performance under the alkaline condition, the high reutilization degree is achieved, the large electrochemical active area is achieved, and the material catalytic activity is greatly improved; and the preparing method is simple in preparing process, low in sintering temperature, low in energy consumption in the preparing process and favorable for industrial production.

Description

technical field [0001] The invention relates to the technical field of electrolytic water catalysis for hydrogen evolution, in particular to a molybdenum-doped iron / nickel layered array@foam nickel-based composite electrode material and its preparation method and application. Background technique [0002] As the cornerstone of various production activities in human society, energy is the most important driving force for the development of human productivity. From ancient times to the present, fossil energy has been the main source of energy used by human beings, and its consumption rate has become faster and faster with the development of human beings. Especially since entering the industrialized society, the existing reserves will be exhausted within a few centuries. The consumption of fossil energy has also brought about environmental pollution. Therefore, the development of sustainable and clean alternative energy is a top priority. Since the hydrogen combustion process ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/06C25B11/04C25B1/04
CPCC25B1/04C25B11/04Y02E60/36
Inventor 喻发全李攀王建芝谌伟明薛亚楠蔡宁
Owner WUHAN INSTITUTE OF TECHNOLOGY
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