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Preparation method of trinickel disulfide-nickel electrode material for electrolytic water hydrogen production

A technology for nickel disulfide and nickel electrodes, which is applied to electrodes, electrolysis processes, electrolysis components, etc., can solve the problems of cumbersome procedures, insufficient bonding performance, insufficient catalytic activity, etc. The effect of improving compound stability

Inactive Publication Date: 2018-07-24
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the current composite method of catalyst and electrode material, which has cumbersome procedures, insufficient bonding performance, and insufficient catalytic activity, the present invention proposes a preparation method of nickel disulfide-nickel electrode material for hydrogen production by electrolysis of water, so as to achieve high stability As well as the preparation of highly catalytically active electrode materials, the preparation process is simple and has the potential for large-scale production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Mix thiourea with a concentration of 1.5g / 100mL and ethanol, place it on a magnetic stirrer, and stir continuously at a speed of 80rpm to completely dissolve thiourea in ethanol to obtain a compound sulfur source solution;

[0034] (2) Set the size to 1×1cm 2 The pore size is 350μm, the porosity is 97%, and the surface density is 480g / m 3The nickel foam was immersed in acetone, deionized water, and dilute hydrochloric acid in order to ultrasonically clean it, and finally rinsed with deionized water, blotted dry and vacuum dried at 60 °C for 24 h. Immerse the treated foamed nickel into the reaction vessel, raise the temperature to 170°C at a heating rate of 5°C / min, feed argon for 20 minutes, discharge the oxygen in the reaction vessel, then heat the composite sulfur source solution, and heat The temperature is 80°C, the ethanol dissolved with thiourea is evaporated to form steam, the argon flow rate is controlled to 250 sccm, the steam flow rate is 10 sccm, and the...

Embodiment 2

[0038] (1) Mix thiourea with a concentration of 1.8g / 100mL and ethanol, place it on a magnetic stirrer, and stir continuously at a speed of 60rpm to completely dissolve thiourea in ethanol to obtain a compound sulfur source solution;

[0039] (2) Set the size to 1×1cm 2 The pore size is 400μm, the porosity is 99%, and the surface density is 410g / m 3 The nickel foam was immersed in acetone, deionized water and dilute hydrochloric acid in order to ultrasonically clean, and finally rinsed with deionized water, blotted dry and vacuum dried at 80°C for 12 hours. Immerse the treated foamed nickel in the reaction vessel, heat up to 172°C at a heating rate of 12°C / min, feed argon for 20 minutes, discharge the oxygen in the reaction vessel, then heat the composite sulfur source solution, and heat The temperature is 130°C, the ethanol dissolved with thiourea is evaporated to form steam, the argon flow rate is controlled to 230 sccm, the steam flow rate is 30 sccm, and the ethanol vapor...

Embodiment 3

[0043] (1) Mix thiourea with a concentration of 1.7g / 100mL and ethanol, place it on a magnetic stirrer, and stir continuously at a speed of 40 rpm to completely dissolve thiourea in ethanol to obtain a compound sulfur source solution;

[0044] (2) Set the size to 1×1cm 2 The pore size is 370μm, the porosity is 97%, and the surface density is 410g / m 3 The nickel foam was immersed in acetone, deionized water, and dilute hydrochloric acid in order to ultrasonically clean it, and finally rinsed with deionized water, blotted dry, and dried in vacuum at a temperature of 68 °C for 19 h. Immerse the treated foamed nickel into the reaction vessel, raise the temperature to 178°C at a heating rate of 8°C / min, feed argon for 20 minutes, discharge the oxygen in the reaction vessel, then heat the composite sulfur source solution, and heat The temperature is 102°C, the ethanol dissolved with thiourea is evaporated to form steam, the argon flow rate is controlled to 280 sccm, the steam flow ...

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Abstract

The invention provides a preparation method of a trinickel disulfide-nickel electrode material for electrolytic water hydrogen production. Foamed nickel is used as a substrate; ethanol steam dissolvedwith thiourea is loaded through argon gas; meanwhile, ammonia gas is introduced for performing cold plasma etching on the nickel substrate; after cooling, a trinickel disulfide / nickel composite electrode material is obtained. The preparation method overcomes the defects that the working procedures of the compounding mode of the existing catalyst and electrode material are complicated; the combination performance is not excellent; the catalytic activity is poor. An oxidation layer at the plasma etching foam nickel surface is subjected to surface activation; the fast reaction of thiourea and nickel metal is promoted to form trinickel disulfide; the prepared catalyst and electrode material interface structure is stable. Further, alkaline gas is added, so that the surface appearance becomes coarse and porous; the specific surface area of the catalyst is increased; further, the catalytic activity of the composite electrode material is promoted. In addition, the preparation process is simple; large-scale production potential is realized.

Description

technical field [0001] The invention relates to the technical field of hydrogen production by electrolysis of water, in particular to a preparation method of nickel disulfide-nickel electrode material for hydrogen production by electrolysis of water. Background technique [0002] The development of human society is inseparable from the use of energy. However, the limited content of fossil fuels in the earth's crust, and the problems of air pollution and global warming caused by them will lead to serious energy and life problems for human beings. Hydrogen energy is an environmentally friendly and renewable new type of energy. Due to its high efficiency, zero pollution and simple production, its development and application is conducive to solving the efficiency and pollution problems in current energy use. Hydrogen production by electrolysis of water is an industrialized and cheap preparation of H 2 It is an important means to produce products with a purity of 99% to 99.9%. A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/04C25B11/03C25B1/04
CPCC25B1/04C25B11/03C25B11/051C25B11/057C25B11/075Y02E60/36
Inventor 陈庆廖健淞
Owner CHENDU NEW KELI CHEM SCI CO LTD
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