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

Co dendrite electrocatalyst and preparation method thereof

A technology of electrocatalysts and nanorods, applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of less active sites for oxygen production, poor oxygen production performance, and small specific surface area. To achieve the effect of promoting the process of electrolysis of oxygen and increasing the exposure ratio

Inactive Publication Date: 2021-03-23
WUHAN UNIV OF TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nanoscale Co metal particles have good electrocatalytic oxygen generation ability, but poor long-term stability and easy to agglomerate; micron bulk Co metal, due to the small specific surface area, has fewer exposed oxygen generation active sites, resulting in poor oxygen generation performance

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
  • Co dendrite electrocatalyst and preparation method thereof
  • Co dendrite electrocatalyst and preparation method thereof
  • Co dendrite electrocatalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Weigh 3.0 g of trimesic acid and 0.6 g of titanium dioxide P25, dissolve the two together in a solution prepared from 5 ml of ethanol and 10 ml of deionized water, and stir until the solution is uniform;

[0028] (2) Pour the prepared solution into a clean hydrothermal reaction kettle, conduct a hydrothermal reaction at 100°C for 24 hours, then wash and dry;

[0029] (3) configure 0.1mol / L cobalt chloride hexahydrate aqueous solution and 25mol / L sodium hydroxide aqueous solution respectively;

[0030] (4) Measure 10ml of the cobalt chloride hexahydrate aqueous solution obtained in step (3) in a beaker, add 150mg of titanium dioxide P25 obtained in step (2), stir to obtain a homogeneous solution, and then add 0.5ml of the obtained solution in step (3) Sodium hydroxide aqueous solution, stir to obtain a uniform solution, then add 1.5ml of hydrazine hydrate, stir until the solution is uniform;

[0031] (5) Pour the prepared solution into a clean hydrothermal reaction ...

Embodiment 2

[0036] (1) Weigh 3.0 g of trimesic acid and 0.6 g of titanium dioxide P25, dissolve the two together in a solution prepared from 5 ml of ethanol and 10 ml of deionized water, and stir until the solution is uniform;

[0037] (2) Pour the prepared solution into a clean hydrothermal reaction kettle, conduct a hydrothermal reaction at 100°C for 24 hours, then wash and dry;

[0038] (3) configure 0.1mol / L cobalt chloride hexahydrate aqueous solution and 25mol / L sodium hydroxide aqueous solution respectively;

[0039] (4) Measure 10ml of the cobalt chloride hexahydrate aqueous solution obtained in step (3) in a beaker, add 50mg of P25 obtained in step (2), stir to obtain a homogeneous solution, and then add 0.5ml of hydrogen obtained in step (3) Sodium oxide aqueous solution, stir to obtain a uniform solution, then add 1.5ml of hydrazine hydrate, stir until the solution is uniform;

[0040] (5) Pour the prepared solution into a clean hydrothermal reaction kettle, and conduct a hydr...

Embodiment 3

[0045] (1) Weigh 3.0 g of trimesic acid and 0.6 g of titanium dioxide P25, dissolve the two together in a solution prepared from 5 ml of ethanol and 10 ml of deionized water, and stir until the solution is uniform;

[0046] (2) Pour the prepared solution into a clean hydrothermal reaction kettle, conduct a hydrothermal reaction at 100°C for 24 hours, then wash and dry;

[0047] (3) configure 0.1mol / L cobalt chloride hexahydrate aqueous solution and 25mol / L sodium hydroxide aqueous solution respectively;

[0048] (4) Measure 10ml of the cobalt chloride hexahydrate aqueous solution obtained in step (3) in a beaker, add 10mg of P25 obtained in step (2), stir to obtain a homogeneous solution, and then add 0.5ml of hydrogen obtained in step (3) Sodium oxide aqueous solution, stir to obtain a uniform solution, then add 1.5ml of hydrazine hydrate, stir until the solution is uniform;

[0049] (5) Pour the prepared solution into a clean hydrothermal reaction kettle, and conduct a hydr...

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

PropertyMeasurementUnit
sizeaaaaaaaaaa
lengthaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a Co dendrite electrocatalyst with nanorods directional assembly and a preparation method thereof. It is a micron dendrite composed of nanorods orientedly assembled. The size of the micron dendrite is 5 to 15 μm. The length of the nanorod is 3 to 10 μm and the diameter is 0.3 to 1 μm. Prepare an ethanol aqueous solution of mesitylic acid and titanium dioxide P25, and stir until the solution is uniform; add a hydrothermal reactor and raise the temperature to 80-120°C for a hydrothermal reaction of 12-24 hours, then wash and dry to obtain modified titanium dioxide P25; add it to chlorine hexahydrate In the cobalt aqueous solution, stir and add sodium hydroxide aqueous solution and hydrazine hydrate; add it to a hydrothermal reaction kettle, and conduct a hydrothermal reaction at 150-200°C for 0.5-1.5h. The directionally assembled Co dendritic crystals of nanorods obtained by the present invention can increase the exposure ratio of active sites of the material, promote the process of electrolytic oxygen evolution, and provide new ideas for expanding the structure and application range of common Co metal materials.

Description

technical field [0001] The invention belongs to the technical field of inorganic chemical synthesis, and in particular relates to a Co dendritic electrocatalyst material oriented assembled by nanorods and a preparation method thereof. Background technique [0002] With the increasing demand for energy and the deteriorating environment, it is urgent to develop sustainable and fossil-free fuels. The electrolysis of water has attracted great attention from the electrocatalysis community at home and abroad. However, the half reaction of oxygen production is slower than that of hydrogen production, which restricts the development of electrolysis of water. Although Ru and Ir-based catalysts have excellent oxygen production performance in water electrolysis; however, Ru and Ir are scarce in the earth and expensive, which limits the practical application of Ru and Ir-based catalytic materials. For non-Pt materials such as transition metal Co, it is abundant in reserves, cheap, and h...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/75B01J35/02B01J37/10B01J37/16C25B1/04C25B11/091B01J35/00
CPCC25B1/04C25B11/04B01J23/75B01J37/10B01J37/16B01J35/33B01J35/00B01J35/30Y02E60/36
Inventor 阳晓宇余豪争周青王永常刚刚田歌
Owner WUHAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap 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