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

A kind of cobalt-nickel hydroxide sleeve-type modified carbon fiber composite material and its preparation method and application

A fiber composite material and hydroxide technology, applied in the direction of metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, catalyst activation/preparation, etc., can solve the problem of easy agglomeration, performance reduction, metal hydroxide Poor conductivity and other problems, to achieve the effects of simplified process, clear active components, and high electrocatalytic efficiency

Active Publication Date: 2021-08-06
TAIYUAN UNIV OF TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to overcome the problems of poor conductivity of metal hydroxides and easy agglomeration to reduce performance during the preparation process, the one-step hydrothermal synthesis method is used to directly grow vertically on the conductive carbon material substrate during the preparation process, and the ratio of precursor cobalt and nickel is adjusted to optimize the reaction. Temperature, time, select the best active load on the substrate to ensure the efficiency of electrocatalytic oxygen evolution and the stability of practical application

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
  • A kind of cobalt-nickel hydroxide sleeve-type modified carbon fiber composite material and its preparation method and application
  • A kind of cobalt-nickel hydroxide sleeve-type modified carbon fiber composite material and its preparation method and application
  • A kind of cobalt-nickel hydroxide sleeve-type modified carbon fiber composite material and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Take the polyacrylonitrile carbon felt (PAN) acidified by concentrated acid into the inner lining of the reactor; use deionized water as a solvent, dissolve 0.46mol / L urea as a hydrolysis agent, add 0.01mol / L ammonium fluoride as a growth-directing agent, Cobalt ion salt and nickel ion salt are added under magnetic stirring, so that the element ratio of cobalt and nickel is 9 / 1. After mixing evenly, transfer it to the lining of the reactor to immerse the carbon felt, and keep it at 90 °C for hydrothermal reaction for 7 h; after cooling, wash the polyacrylonitrile carbon felt with deionized water, and dry it overnight at 7 °C to obtain layered cobalt-nickel hydroxide / Polyacrylonitrile carbon felt composite material, denoted as Co / Ni PAN-90.

Embodiment 2

[0039] Take the polyacrylonitrile carbon felt (PAN) acidified by concentrated acid into the inner lining of the reactor; use deionized water as a solvent, dissolve 0.46mol / L urea as a hydrolysis agent, add 0.01mol / L ammonium fluoride as a growth-directing agent, Cobalt ion salt and nickel ion salt are added under magnetic stirring, so that the element ratio of cobalt and nickel is 9 / 1. After mixing evenly, transfer it to the lining of the reactor to immerse the carbon felt, and keep it at 120 °C for hydrothermal reaction for 7 h; after cooling, wash the polyacrylonitrile carbon felt with deionized water and dry it at 70 °C overnight to obtain layered cobalt-nickel hydroxide / Polyacrylonitrile carbon felt composite material, denoted as Co / Ni PAN-120.

Embodiment 3

[0041] Take the polyacrylonitrile carbon felt (PAN) acidified by concentrated acid into the inner lining of the reactor; use deionized water as a solvent, dissolve 0.46mol / L urea as a hydrolysis agent, add 0.01mol / L ammonium fluoride as a growth-directing agent, Cobalt ion salt and nickel ion salt are added under magnetic stirring, so that the element ratio of cobalt and nickel is 9 / 1. After mixing evenly, transfer it to the lining of the reactor to immerse the carbon felt, and keep it at 180 °C for hydrothermal reaction for 7 h; after cooling, clean the polyacrylonitrile carbon felt with deionized water, and dry it at 70 °C overnight to obtain layered cobalt-nickel hydroxide / Polyacrylonitrile carbon felt composite material, denoted as Co / Ni PAN-180.

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
diameteraaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a cobalt-nickel hydroxide sleeve-type modified carbon fiber composite material, a preparation method and application thereof. The material includes a three-dimensional conductive matrix material and a catalytic active component compounded on the surface of the matrix; the two form a binder-free sleeve-type integrated electrode material. The preparation method is: use divalent metal ions to grow hydroxide in situ on the carbon fiber matrix through a one-step hydrothermal method, and use it as a composite material to directly apply to the study of oxygen evolution in a neutral environment: the active component is combined with the matrix to form a binder-free The sleeve type integrated electrode material. The one-step method for synthesizing cobalt-nickel hydroxide sleeve-type modified carbon fiber composite materials in the present invention has clear active components, high electrocatalytic efficiency, cheap and easy-to-obtain matrix materials, and is easy to process. The synergistic effect of the two improves electrocatalysis The electrical conductivity and active sites give full play to the excellent performance of hydroxide and carbon fiber mat in electrocatalysis.

Description

technical field [0001] The invention relates to a cobalt-nickel hydroxide sleeve-type modified carbon fiber composite material and a preparation method and application thereof, belonging to the technical field of catalytic materials. Background technique [0002] With the continuous consumption of fossil energy and increasing environmental problems, people's demand for clean energy and green development is increasing. Electrocatalytic anode oxygen evolution reaction (OER) plays an important role in the field of new energy, such as electrocatalytic water splitting hydrogen evolution, fuel cells, etc. However, the oxygen evolution reaction involves four-electron transfer and is a kinetically hysteretic process. At present, noble metals such as ruthenium and iridium and their oxides have high electrocatalytic activity and can improve the efficiency of oxygen evolution, but factors such as high price and low reserves limit their commercial application. Therefore, research and ...

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): C25B11/054C25B11/065C25B11/075C25B1/04B01J23/75B01J23/755B01J37/10
CPCB01J23/75B01J23/755B01J35/0033B01J37/10C25B1/04C25B11/051C25B11/091Y02E60/36
Inventor 刘世斌刘莉雪段东红李瑜丁传敏原沁波白玉
Owner TAIYUAN 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