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Preparation method of high-performance nickel-based ruthenium-containing compound oxide hydrogen evolution electrode

A technology of ruthenium composite oxide and hydrogen evolution electrode, which is applied in the field of electrocatalytic hydrogen evolution, can solve the problems that the coating is easy to be eroded by bubbles, easy to fall off, electrode life shortening, etc., and achieves convenient and feasible operation, simple and novel method, and improved stability Effect

Inactive Publication Date: 2014-07-16
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems that the traditionally prepared nickel-ruthenium oxide coating is easily eroded by bubbles and easily falls off, resulting in shortened electrode life, a method for preparing a high-performance nickel-based ruthenium-containing composite oxide hydrogen evolution electrode is provided.

Method used

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  • Preparation method of high-performance nickel-based ruthenium-containing compound oxide hydrogen evolution electrode
  • Preparation method of high-performance nickel-based ruthenium-containing compound oxide hydrogen evolution electrode
  • Preparation method of high-performance nickel-based ruthenium-containing compound oxide hydrogen evolution electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Pretreatment of nickel foam substrate

[0027] Put the nickel foam substrate into the acetone solution and ultrasonically vibrate for 15 minutes for chemical degreasing, then soak it in the hydrochloric acid aqueous solution with a molar concentration of 3mol / L for 0.5 hours to remove the oxides on the surface of the Ni foam substrate, and finally rinse with deionized water Clean and dry naturally before use;

[0028] (2) Preparation of nickel-based ruthenium-containing composite oxide hydrogen evolution electrode with nickel foam as the substrate

[0029] Take ethylene glycol as solvent, configure the nickel ruthenium precursor solution containing nickel chloride, ruthenium trichloride and urea, wherein the molar concentration of nickel chloride is 8mmol / L, and the molar concentration of ruthenium trichloride is 2mmol / L, The molar concentration of urea is 20mmol / L; put the foamed nickel substrate pretreated in step (1) into the reaction kettle containing the nicke...

Embodiment 2

[0033] Step (1) is the same as step (1) in Example 1.

[0034] (2) Preparation of nickel-based ruthenium-containing composite oxide hydrogen evolution electrode with nickel foam as the substrate

[0035] Take ethylene glycol as solvent, configure the nickel ruthenium precursor solution containing nickel chloride, ruthenium trichloride and urea, wherein the molar concentration of nickel chloride is 8mmol / L, and the molar concentration of ruthenium trichloride is 2mmol / L, The molar concentration of urea is 20mmol / L; put the foamed nickel substrate pretreated in step (1) into the reaction kettle containing the nickel-ruthenium precursor solution, and react at 120°C for 12 hours; after the reaction is completed, use Rinse with ion water, anneal at 400° C. for 1 hour in a muffle furnace, and cool to room temperature to prepare a nickel-based ruthenium-containing composite oxide hydrogen evolution electrode.

[0036] (3) Hydrogen evolution performance test of nickel-based ruthenium...

Embodiment 3

[0039] Step (1) is the same as step (1) in Example 1.

[0040] (2) Preparation of nickel-based ruthenium-containing composite oxide hydrogen evolution electrode with nickel foam as the substrate

[0041] Take ethylene glycol as solvent, configure the nickel ruthenium precursor solution containing nickel chloride, ruthenium trichloride and urea, wherein the molar concentration of nickel chloride is 8mmol / L, and the molar concentration of ruthenium trichloride is 2mmol / L, The molar concentration of urea is 20mmol / L; put the foamed nickel substrate pretreated in step (1) into the reaction kettle containing the nickel-ruthenium precursor solution, and react at 90°C for 12 hours; after the reaction is completed, use Rinse with ion water, anneal at 400° C. for 1 hour in a muffle furnace, and cool to room temperature to prepare a nickel-based ruthenium-containing composite oxide hydrogen evolution electrode.

[0042] (3) Hydrogen evolution performance test of nickel-based ruthenium-...

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Abstract

The invention provides a preparation method of a high-performance nickel-based ruthenium-containing compound oxide hydrogen evolution electrode, and belongs to the field of electric catalytic hydrogen evolution in chlorine alkali industry. The method comprises the following steps: firstly, putting a foam nickel substrate into an acetone solution and carrying out ultrasonic concussion for 15 minutes so as to perform chemical degreasing; then, soaking the foam nickel substrate in a 3mol / L hydrochloric acid aqueous solution for 0.5 hour so as to remove oxides from the surface of the foam nickel substrate; finally, carrying out in-situ growth of nickel ruthenium oxide nanorods on the surface of the pretreated foam nickel substrate by virtue of a solvent thermal synthesis method, thereby obtaining the hydrogen evolution electrode with good catalytic performance and high stability. The method is simple and novel and is convenient and feasible to operate. The prepared nickel-based ruthenium-containing compound oxide hydrogen evolution electrode has a unique nanorod structure; the coating surface of the electrode is flat and flawless without a fracturing phenomenon. Thus, the electrode provided by the invention can be widely taken as a hydrogen evolution electrode material for alkaline electrolysis water.

Description

technical field [0001] The invention belongs to the field of electrocatalytic hydrogen evolution, and in particular relates to a preparation method of a high-performance nickel-based ruthenium-containing composite oxide hydrogen evolution electrode. Background technique [0002] Hydrogen energy is highly valued by people because of its rich resources, safety and cleanness, and superior performance. It is very likely to replace fossil fuels in the future. Hydrogen can be prepared in many ways, among which electrolysis of water is the best method for producing hydrogen, with mature technology, simple process, no pollution, and high purity hydrogen. In the actual hydrogen production process of electrolyzed water, due to the large hydrogen evolution overpotential, the electrolytic water industry consumes a lot of energy. Therefore, it is important to prepare a catalytic hydrogen evolution electrode with high activity and stability, reduce the electrode overpotential in the elect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/08C23C18/12
Inventor 魏子栋张莉熊昆陈四国李莉廖建华王晓雪
Owner CHONGQING UNIV
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