Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Preparation method and application of nitrogen-doped ternary sulfide electrocatalyst material

A technology of sulfide electricity and catalysts, which is applied in the direction of physical/chemical process catalysts, chemical/physical processes, electrodes, etc., can solve the problems of reduced efficiency of catalytic water splitting, etc., and achieve high practical application value, simple process, and easy process control Effect

Active Publication Date: 2019-08-30
BEIJING UNIV OF TECH
View PDF5 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the oxygen generation process is a complex oxidation-reduction process involving four electrons, it is the rate-determining step in the water splitting reaction process, resulting in a decrease in the overall catalytic water splitting efficiency

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method and application of nitrogen-doped ternary sulfide electrocatalyst material
  • Preparation method and application of nitrogen-doped ternary sulfide electrocatalyst material
  • Preparation method and application of nitrogen-doped ternary sulfide electrocatalyst material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Put the cleaned foamed nickel vertically into the lining of the hydrothermal kettle, then add a mixed solution of sodium molybdate and nickel chloride with a concentration of 6mmol / L, then put it into a stainless steel autoclave jacket and seal it, place it in React in an oven at 160° C. for 10 hours. After the reaction is completed, cool down to room temperature naturally, and wash the nickel sheet with distilled water and ethanol several times. Then put into the mixed solution of sodium sulfide and thioacetamide, the concentrations are 10mmol / L and 0.5mmol / L respectively, and react in hydrothermal reaction at 140°C for 24h. After the reaction, the nickel sheet is taken out, washed 3 to 5 times with deionized water, and dried at 80°C. That is, nitrogen-doped NiMoS grown on a nickel foam substrate 4 Electrocatalyst, from figure 1 It can be seen that a linear structured catalyst is obtained.

Embodiment 2

[0026] Put the cleaned foamed nickel vertically into the lining of the hydrothermal kettle, then add a mixed solution of sodium molybdate and cobalt nitrate with a concentration of 4mmol / L, then put it into a stainless steel autoclave jacket and seal it, and place it at 150 The reaction was carried out in an oven at ℃ for 16 hours. After the reaction was completed, it was naturally cooled to room temperature, and the nickel sheet was cleaned several times with distilled water and ethanol respectively. Then put into the mixed solution of sodium sulfide and thiourea, the concentrations are 6mmol / L and 1mmol / L respectively, and react in hydrothermal reaction at 160°C for 12h. After the reaction, the nickel sheet is taken out, washed 3 to 5 times with deionized water, and dried at 80°C. That is, nitrogen-doped CoMoS grown on a nickel foam substrate 4 electrocatalyst.

Embodiment 3

[0028] Put the mixed solution of sodium molybdate and cobalt chloride with a concentration of 8mmol / L into the jacket of a stainless steel autoclave and seal it, place it in an oven at 200°C for 24 hours, and cool it naturally to room temperature after the reaction is completed. Wash several times with distilled water and ethanol. Then put into the mixed solution of sodium sulfide and thiourea, the concentrations are 12mmol / L and 1.5mmol / L respectively, and react in hydrothermal reaction at 180°C for 12h. After the reaction, the product was collected, washed 3 to 5 times with deionized water and absolute ethanol, and dried at 80°C. That is, nitrogen-doped CoMoS 4 electrocatalyst particles.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to preparation method and application of a nitrogen-doped ternary sulfide electrocatalyst material, and belongs to the technical field of catalysts. The method comprises the following steps: ultrasonically removing oxides and impurities on the surface of a metal substrate by using hydrochloric acid, absolute ethyl alcohol and deionized water separately; adding a transition metal precursor salt and a soluble salt of tungsten or molybdenum into deionized water, and carrying out stirring for dissolving; vertically putting the substrate into a hydrothermal kettle, then addingthe prepared solution, and carrying out a hydrothermal reaction; washing the product with water, putting the product into a hydrothermal kettle, and adding solution containing a sulfur source and a nitrogen source to carry out a vulcanization and nitridation reaction; and washing the obtained product with deionized water, and carrying out drying to obtain a nitrogen-doped ternary sulfide electrocatalyst, where introduction of the substrate is omitted if particles are prepared by the method. In the preparation process of the X-M-S catalyst, in-situ nitrogen doping is carried out, so that catalytic performance of the prepared water electrolysis catalyst is improved.

Description

technical field [0001] The invention provides a preparation technology of a nitrogen-doped ternary sulfide electrocatalyst material, belonging to the technical field of catalysts. Background technique [0002] While traditional energy reserves are decreasing day by day and pollution is increasing day by day, the exploration and application of new energy sources has become the key to improving this situation. Hydrogen energy has the characteristics of high energy density, cleanness and environmental protection, and is considered to be an excellent substitute for fossil fuels. Electrolyzed water has become one of the most promising green hydrogen production methods due to its environmental friendliness, high product purity, and no carbon emissions. Platinum, iridium and other noble metal-based materials are efficient catalysts for electrolysis of water, but their reserves are scarce and expensive, which has become the most important bottleneck restricting the large-scale appl...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01J27/24C25B11/06C25B11/03C25B1/04
CPCB01J27/24C25B1/04C25B11/031C25B11/075B01J35/33Y02E60/36
Inventor 胡鹏王金淑
Owner BEIJING UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com