Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

CoS2/CoS2-NC catalytic electrode material with three-dimensional core-shell structure as well as preparation method and application of catalytic electrode material

A core-shell structure, catalytic electrode technology, applied in chemical instruments and methods, physical/chemical process catalysts, electrodes, etc., can solve problems such as limited activity, achieve abundant production raw materials, accelerate the rate of electron transfer, and produce low-cost Effect

Inactive Publication Date: 2019-06-21
ZHEJIANG UNIV
View PDF2 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the electrocatalytic activity of the electrocatalytic material obtained by the above preparation method is better than that of the widely used commercial Ir / C electrocatalytic material, its further development is limited due to its limited activity. An anode catalyst for water is an essential step to realize industrial water splitting for hydrogen production

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
  • CoS2/CoS2-NC catalytic electrode material with three-dimensional core-shell structure as well as preparation method and application of catalytic electrode material
  • CoS2/CoS2-NC catalytic electrode material with three-dimensional core-shell structure as well as preparation method and application of catalytic electrode material
  • CoS2/CoS2-NC catalytic electrode material with three-dimensional core-shell structure as well as preparation method and application of catalytic electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Preparation of three-dimensional graphene electrode (EG):

[0038] (1-1) Cut the graphite sheet into 2×3cm 2 size, use a mixed solution of ultrapure water and ethanol to wash in an ultrasonic cleaning apparatus for about 1 hour, and dry in an oven at 80 °C;

[0039] (1-2) The graphite sheet treated in step (1) was placed in 0.05M (NH) as an anode 4 ) 2 SO 4 In the solution, the counter electrode is a platinum electrode;

[0040] (1-3) Under the voltage of 10V, electrochemical stripping is performed for about 2min;

[0041] (1-4) Remove the graphite sheet, wash it with deionized water, and dry it in an oven to obtain an EG substrate.

[0042] (2) Electrochemical deposition of Co(OH) 2 :

[0043] (2-1) Using a three-electrode system, the working electrode is EG, and the counter electrode is 2×2cm 2 The platinum electrode, the reference electrode is Ag / AgCl electrode in saturated KCl solution, and the electrolyte is 0.05M Co(NO 3 ) 2 electrolyte;

[0044] (2...

Embodiment 2

[0061] (1) Preparation of three-dimensional graphene electrode (EG):

[0062] (1-1) Cut the graphite sheet into 3×3cm 2 size, use a mixed solution of ultrapure water and ethanol to wash in an ultrasonic cleaning apparatus for about 1 hour, and dry in an oven at 80 °C;

[0063] (1-2) The graphite sheet treated in step (1) was placed in 0.05M (NH) as an anode 4 ) 2 SO 4 In the solution, the counter electrode is a platinum electrode;

[0064] (1-3) Under the voltage of 10V, the electrochemical stripping is performed for about 3 minutes;

[0065] (1-4) Remove the graphite sheet, wash it with deionized water, and dry it in an oven to obtain an EG substrate.

[0066] (2) Electrochemical deposition of Co(OH) 2 :

[0067] (2-1) Using a three-electrode system, the working electrode is EG, and the counter electrode is 2×2cm 2 The platinum electrode, the reference electrode is Ag / AgCl electrode in saturated KCl solution, and the electrolyte is 0.05M Co(NO 3 ) 2 electrolyte;

...

Embodiment 3

[0082] (1) Preparation of three-dimensional graphene electrode (EG):

[0083] (1-1) Cut the graphite sheet into 3×3cm 2 size, use a mixed solution of ultrapure water and ethanol to wash in an ultrasonic cleaning apparatus for about 1 hour, and dry in an oven at 80 °C;

[0084] (1-2) The graphite sheet treated in step (1) was placed in 0.05M (NH) as an anode 4 ) 2 SO 4 In the solution, the counter electrode is a platinum electrode;

[0085] (1-3) Under the voltage of 10V, electrochemical stripping is performed for about 2min;

[0086] (1-4) Remove the graphite sheet, wash it with deionized water, and dry it in an oven to obtain an EG substrate.

[0087] (2) Electrochemical deposition of Co(OH) 2 :

[0088] (2-1) Using a three-electrode system, the working electrode is EG, and the counter electrode is 2×2cm 2 The platinum electrode, the reference electrode is Ag / AgCl electrode in saturated KCl solution, and the electrolyte is 0.05M Co(NO 3 ) 2 electrolyte;

[0089] (2...

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 discloses a CoS2 / CoS2-NC catalytic electrode material with a three-dimensional core-shell structure and a preparation method of the catalytic electrode material. The preparation method comprises the following steps: 1) depositing a Co(OH)2 nanosheet on the surface of a three-dimensional graphene electrode to obtain a Co(OH)2 carbon-based material; 2) performing a reaction on the Co(OH)2 carbon-based material obtained in step (1) and 2-methyl imidazole to obtain a Co(OH)2 / ZIF-67 composite; 3) mixing the composite in the step (2) with sulfur powder for vulcanization reaction to obtain the CoS2 / CoS2-NC catalytic electrode material with the three-dimensional core-shell structure. The obtained CoS2 / CoS2-NC catalytic electrode material with the three-dimensional core-shell structure shows extremely high OER catalytic activity and excellent stability when applied as an anode to water electrocatalysis in an alkaline electrolyte, and has the potential of industrial large-scale preparation of oxygen by electrocatalytic water decomposition.

Description

technical field [0001] The invention relates to the technical fields of nanomaterial technology and electrochemical energy conversion, in particular to a three-dimensional core-shell structure CoS 2 / CoS 2 -Preparation method of NC catalytic electrode material and its application in electrocatalytic water splitting of oxygen. Background technique [0002] Hydrogen production by electrocatalytic water splitting technology is one of the important means to solve the problems of environmental pollution and energy crisis. At present, the global hydrogen energy mainly comes from thermal cracking of petroleum. This process consumes severe energy and causes serious pollution. Compared with this, the electrolysis of water for hydrogen production has the characteristics of cleanliness, environmental protection and high utilization rate, but the overpotential of water cracking anode is relatively high. severely restricted its development. [0003] In terms of kinetics, the anodic el...

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): C25B11/06B01J27/24C25B1/04
CPCY02E60/36
Inventor 侯阳曹骏辉杨彬雷乐成
Owner ZHEJIANG UNIV
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com