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Phosphorus-doped bimetallic selenide electrocatalyst material with adjustable monometallic element electronic structure, and preparation method and application of phosphorus-doped bimetallic selenide electrocatalyst material

A technology of selenide electricity and metal elements, applied in the field of electrochemistry

Active Publication Date: 2021-09-10
山东大学深圳研究院 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are few reports on the preparation and regulation methods of selenide electrocatalyst materials.

Method used

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  • Phosphorus-doped bimetallic selenide electrocatalyst material with adjustable monometallic element electronic structure, and preparation method and application of phosphorus-doped bimetallic selenide electrocatalyst material
  • Phosphorus-doped bimetallic selenide electrocatalyst material with adjustable monometallic element electronic structure, and preparation method and application of phosphorus-doped bimetallic selenide electrocatalyst material
  • Phosphorus-doped bimetallic selenide electrocatalyst material with adjustable monometallic element electronic structure, and preparation method and application of phosphorus-doped bimetallic selenide electrocatalyst material

Examples

Experimental program
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Effect test

Embodiment 1

[0056] A preparation method of an iron-nickel selenide electrocatalyst material with adjustable electronic structure of a phosphorus-doped single metal element, comprising the following steps:

[0057] (1) Cut the selected nickel foam into 1*3cm 2 , using acetone, hydrochloric acid, deionized water, and ethanol to ultrasonically clean the cut foam nickel for 30 minutes respectively. After cleaning, put it into a vacuum drying oven and dry it under vacuum for 24 hours at 60° C. to obtain the pretreated foam nickel; The treated foamed nickel was placed in a reaction kettle containing 40mL nickel-iron precursor solution, and then hydrothermally reacted in an oven at 120°C for 16h; Dry at 60°C for 24 hours to obtain a foamed nickel precursor grown with nickel-iron hydrotalcite nanosheets.

[0058] (2) Put the foamed nickel precursor with nickel-iron hydrotalcite nanosheets into a reaction kettle equipped with 30mL 30mmol / L sodium selenium hydride solution, then hydrothermally rea...

Embodiment 2

[0070] A preparation method of an iron-nickel selenide electrocatalyst material with adjustable electronic structure of a phosphorus-doped single metal element, comprising the following steps:

[0071] (1) Cut the selected nickel foam into 1*3cm 2 , using acetone, hydrochloric acid, deionized water, and ethanol to ultrasonically clean the cut foam nickel for 30 minutes respectively. After cleaning, put it into a vacuum drying oven and dry it under vacuum for 24 hours at 60° C. to obtain the pretreated foam nickel; The treated foamed nickel was placed in a reaction kettle containing 40mL nickel-iron precursor solution, and then hydrothermally reacted in an oven at 120°C for 16h; Dry at 60°C for 24 hours to obtain a foamed nickel precursor grown with nickel-iron hydrotalcite nanosheets.

[0072] (2) Put the foamed nickel precursor with nickel-iron hydrotalcite nanosheets into a reaction kettle equipped with 30mL 30mmol / L sodium selenium hydride solution, then hydrothermally rea...

Embodiment 3

[0077] A preparation method of an iron-nickel selenide electrocatalyst material with adjustable electronic structure of a phosphorus-doped single metal element, comprising the following steps:

[0078] (1) Cut the selected nickel foam into 1*3cm 2 , using acetone, hydrochloric acid, deionized water, and ethanol to ultrasonically clean the cut foam nickel for 30 minutes respectively. After cleaning, put it into a vacuum drying oven and dry it under vacuum for 24 hours at 60° C. to obtain the pretreated foam nickel; The treated foamed nickel was placed in a reaction kettle containing 40mL nickel-iron precursor solution, and then hydrothermally reacted in an oven at 120°C for 16h; Dry at 60°C for 24 hours to obtain a foamed nickel precursor grown with nickel-iron hydrotalcite nanosheets.

[0079] (2) Put the foamed nickel precursor with nickel-iron hydrotalcite nanosheets into a reaction kettle equipped with 30mL 30mmol / L sodium selenium hydride solution, then hydrothermally rea...

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Abstract

The invention provides a phosphorus-doped bimetallic selenide electrocatalyst material with an adjustable monometallic element electronic structure as well as a preparation method and application of the phosphorus-doped bimetallic selenide electrocatalyst material. The bimetallic selenide electrocatalyst material is obtained by carrying out hydrothermal treatment on the surface of foamed nickel to grow nickel-iron hydrotalcite nanosheets and then carrying out selenylation and phosphorus doping. According to the method, introduced phosphorus atoms can independently regulate and control the electronic structure of the metal element iron on the premise that the electronic structure of nickel is not changed, so the electrocatalytic activity of the material is further influenced, and it is indirectly proved that the electronic structure of the element iron has great influence on the catalytic activity. In addition, a material source is wide, a synthesis method is simple and convenient, and requirements on equipment are low; and the obtained material is used for an electrochemical oxygen evolution reaction, and has electrochemical properties such as ultrahigh stability and ultralow overpotential.

Description

technical field [0001] The invention relates to a phosphorus-doped single-metal element electronic structure-adjustable double-metal selenide electrocatalyst material and a preparation method and application thereof, belonging to the technical field of electrochemistry. Background technique [0002] Using renewable energy (such as wind energy, solar energy, tidal energy, etc.) to electrochemically split water to produce hydrogen (2H 2 O→2H 2 +O 2 ) is a sustainable hydrogen production method. The hydrogen produced by this method has the advantages of clean and pollution-free, high purity, high conversion efficiency, and environmental friendliness. It is a very promising hydrogen production strategy. The water splitting process can be divided into two half-reactions, the anodic oxygen evolution reaction (OER) and the cathodic hydrogen evolution reaction (HER). Due to the coupling process of multiple protons and electrons involved in the OER process, the slow kinetic rate o...

Claims

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Application Information

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IPC IPC(8): C25B11/091C25B11/031C25B1/04
CPCC25B11/091C25B11/031C25B1/04Y02E60/36
Inventor 王建军黄远桑元华王书华刘宏
Owner 山东大学深圳研究院
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