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Nickel-sulfur composite hydrogen evolution electrode doped with foamed nickel load CeO2 and preparation method

A hydrogen evolution electrode and composite electrode technology, applied in electrodes, chemical instruments and methods, electrolytic coatings, etc., can solve the problems of low catalytic activity, high cost of hydrogen evolution electrodes, poor stability, etc., and achieve good hydrogen evolution catalytic performance and large price advantage , good stability

Inactive Publication Date: 2017-12-15
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to provide a kind of low cost, high catalytic activity and high stability analytical foam nickel load doped CeO 2 The nickel-sulfur composite hydrogen evolution electrode and its preparation method solve the shortcomings of the existing hydrogen evolution electrode, such as high cost, low catalytic activity and poor stability

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  • Nickel-sulfur composite hydrogen evolution electrode doped with foamed nickel load CeO2 and preparation method
  • Nickel-sulfur composite hydrogen evolution electrode doped with foamed nickel load CeO2 and preparation method
  • Nickel-sulfur composite hydrogen evolution electrode doped with foamed nickel load CeO2 and preparation method

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Experimental program
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Effect test

Embodiment 1

[0024] In this example, foamed nickel-based NiS / CeO 2 The preparation method of the composite electrode adopts a composite electrodeposition method to deposit a nickel-sulfur coating on the surface of the three-dimensional foamed nickel. At the same time, during the electrodeposition process, the nano-scale CeO in the composite plating solution was mixed by magnetic stirring. 2 Doped into the nickel-sulfur coating, the specific steps are as follows:

[0025] (1) Selection and pretreatment of nickel foam

[0026] The purity of the three-dimensional porous nickel foam is 99.9%, and the surface density is 480g / m 2 . At room temperature, degrease and degrease the nickel foam in acetone for 10 minutes, and clean it with ultrapure water; then, put it into 2M (molar concentration) HCl for acidification and activation treatment for 5 minutes; finally, put it into ultrapure water for ultrasonic cleaning for 2 minutes and bake Dry and set aside.

[0027] (2) Preparation of foamed n...

Embodiment 2

[0035] In this example, foamed nickel-based NiS / CeO 2 The preparation method of the composite electrode adopts a composite electrodeposition method to deposit a nickel-sulfur coating on the surface of the three-dimensional foamed nickel. At the same time, during the electrodeposition process, the nano-scale CeO in the composite plating solution was mixed by magnetic stirring. 2 Doped into the nickel-sulfur coating, the specific steps are as follows:

[0036] (1) Selection and pretreatment of nickel foam

[0037] The purity of the three-dimensional porous nickel foam is 99.9%, and the surface density is 550g / m 2 . At room temperature, the nickel foam was degreased and degreased in acetone for 10 minutes, and cleaned with ultrapure water; then, it was acidified and activated in 2M HCl for 5 minutes; finally, it was ultrasonically cleaned in ultrapure water for 2 minutes and dried for use.

[0038] (2) Preparation of foamed nickel-based NiS / CeO 2 Compound electrode

[0039]...

Embodiment 3

[0043] In this example, foamed nickel-based NiS / CeO 2 The preparation method of the composite electrode adopts a composite electrodeposition method to deposit a nickel-sulfur coating on the surface of the three-dimensional foamed nickel. At the same time, during the electrodeposition process, the nano-scale CeO in the composite plating solution was mixed by magnetic stirring. 2 Doped into the nickel-sulfur coating, the specific steps are as follows:

[0044] (1) Selection and pretreatment of nickel foam

[0045] The purity of the three-dimensional porous nickel foam is 99.9%, and the surface density is 500g / m 2 . At room temperature, the nickel foam was degreased and degreased in acetone for 10 minutes, and cleaned with ultrapure water; then, it was acidified and activated in 2M HCl for 5 minutes; finally, it was ultrasonically cleaned in ultrapure water for 2 minutes and dried for use.

[0046] (2) Preparation of foamed nickel-based NiS / CeO 2 Compound electrode

[0047]...

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Abstract

The invention relates to a nickel-sulfur composite hydrogen evolution electrode doped with foam nickel load CeO2and a preparation method, and belongs to the technical field of material science and the field of electrocatalysis hydrogen production. The electrode takes three-dimensional foam nickel as a carrier and a nickel-sulfur coating as a surface active layer, andCeO2 is compounded and doped into the nickel-sulfur coating through a composite electrode position method to form a foam nickel-based Ni / CeO2 composite electrode. The nickel-sulfur coating was deposited on the surface of the three-dimensional foam nickel through the composite electrode position method. Meanwhile, in the electrode position process, the nano-scale CeO2in a composite plating solution is doped into the nickel-sulfur coating by magnetic stirring. The hydrogen evolution electrode has the characteristics of being low in overpotential, high in electrode stability and the like, and the preparation process is simple and suitable for large-scale production.

Description

technical field [0001] The invention relates to a foam nickel loaded doped CeO 2 A nickel-sulfur composite hydrogen evolution electrode and a preparation method thereof belong to the field of material science and technology and the field of electrocatalytic hydrogen production. Background technique [0002] Hydrogen energy has attracted the attention of countries all over the world for its remarkable advantages such as high combustion value, renewable, clean and pollution-free. Although hydrogen production from fossil fuels represented by steam methane reforming is currently the most economical hydrogen production method, it not only consumes a large amount of fossil fuels but also produces a large amount of carbon dioxide during the production process, which cannot fundamentally solve the energy crisis and environmental problems. Alkaline electrolyzed water, as the oldest and most technologically mature method of electrolyzed water, is the most potential low-cost, high-eff...

Claims

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Application Information

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IPC IPC(8): C25B11/06C25B1/04C25D9/04C25D15/00B01J27/043
CPCB01J27/043C25B1/04C25D9/04C25D15/00C25B11/051C25B11/057C25B11/091Y02E60/36
Inventor 张开悦刘伟华刘建国严川伟
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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