In situ growth on the surface of a carbon cloth 18 o 49 Preparation method of self-supporting electrode material

A technology of self-supporting electrodes and in-situ growth, applied in electrodes, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve unfavorable large-scale production, mismatch of pH range auxiliary equipment, reduce The overall performance of the electrolytic cell and other issues have been achieved to achieve the effects of short preparation cycle, low cost and mild conditions

Active Publication Date: 2021-02-09
SHAANXI UNIV OF SCI & TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of two different catalysts in the electrolyzer as the hydrogen-producing and oxygen-producing working electrodes usually needs to solve problems such as the mismatch of pH range and auxiliary equipment, which greatly reduces the overall performance of the electrolytic cell.
In addition, many studies have shown that non-precious metal-based electrocatalytic materials for HER have better catalytic activity and stability in acidic electrolytes than in alkaline electrolytes, which is not conducive to large-scale industrial 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
  • In situ growth on the surface of a carbon cloth <sub>18</sub> o <sub>49</sub> Preparation method of self-supporting electrode material
  • In situ growth on the surface of a carbon cloth <sub>18</sub> o <sub>49</sub> Preparation method of self-supporting electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1) First immerse the carbon cloth with a length of 1 cm and a width of 4 cm in acetone for 30 minutes, then place the treated carbon in a 3 mol / L HCl solution for 30 minutes, then use pure water for 30 minutes, and finally Place it in absolute ethanol for 30 minutes of ultrasonic treatment, and finally continue to rinse with absolute ethanol for 5 times;

[0029] 2) will analyze pure tungsten source WCl 6 Add a volume ratio of absolute ethanol: isopropanol: n-butanol = 1:0.5:0.5 mixed alcohol to make a 0.05mol / L solution A;

[0030] 3) Add analytically pure ethylenediamine and citric acid to solution A according to the ratio of ethylenediamine, citric acid and tungsten source at a ratio of 0.05:0.05:1, stir magnetically for 30 minutes, and sonicate for 10 minutes to obtain solution B;

[0031] 4) Pour solution B into a polytetrafluoroethylene-lined autoclave at a volume filling ratio of 40%, and put the treated carbon cloth into the polytetrafluoroethylene reactor cont...

Embodiment 2

[0037] 1) First immerse the carbon cloth with a length of 1 cm and a width of 7 cm in acetone for 30 minutes, then place the treated carbon in a 4 mol / L HCl solution for 20 minutes, then use pure water for 20 minutes, and finally Place it in absolute ethanol for ultrasonic treatment for 20 minutes, and finally rinse with absolute ethanol for 5 times;

[0038] 2) Will analyze pure tungsten source W(CO) 6 Add a volume ratio of ethanol: isopropanol: n-butanol = 1:0.3:0.6 mixed alcohol to make a 0.1mol / L solution A;

[0039] 3) Add analytically pure ethylenediamine and citric acid into solution A according to the ratio of ethylenediamine, citric acid and tungsten source in the amount of 0.06:1:1, magnetically stir for 30 minutes, and ultrasonically treat for 5 minutes to obtain solution B;

[0040] 4) Pour solution B into a polytetrafluoroethylene-lined autoclave at a volume filling ratio of 50%, and put the treated carbon cloth into the polytetrafluoroethylene reactor containing s...

Embodiment 3

[0045] 1) First immerse the carbon cloth with a length of 1 cm and a width of 6 cm in acetone for 30 minutes, then place the treated carbon in a 3 mol / L HCl solution for 30 minutes, then use pure water for 30 minutes, and finally Place it in absolute ethanol for 30 minutes of ultrasonic treatment, and finally continue to rinse with absolute ethanol for 5 times;

[0046] 2) will analyze pure tungsten source W(C 2 h 5 O) 6 Add a volume ratio of absolute ethanol: isopropanol: n-butanol = 1:0.2:0.8 mixed alcohol to make a 0.05mol / L solution A;

[0047] 3) Add analytically pure ethylenediamine and citric acid to solution A according to the ratio of ethylenediamine, citric acid and tungsten source in the amount of 0.1:0.1:1, stir magnetically for 50 minutes, and sonicate for 8 minutes to obtain solution B;

[0048] 4) Pour solution B into a polytetrafluoroethylene-lined autoclave with a volume filling ratio of 60%, and put the treated carbon cloth into the polytetrafluoroethylene...

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

In-situ growth of W on the surface of a carbon cloth 18 o 49 The preparation method of the self-supporting electrode material, the analytical pure tungsten source is added to the mixed alcohol to obtain the solution A, and the analytical pure ethylenediamine and citric acid are added to the solution A to obtain the solution B; the solution B is poured into the polytetrafluoroethylene lined with high pressure Put the carbon cloth in the reaction kettle and put the carbon cloth into the polytetrafluoroethylene reaction kettle; put the sealed reaction kettle into the homogeneous hydrothermal reaction apparatus for hydrothermal reaction; wash the final reactant with absolute ethanol and centrifuge The washed material was dried to obtain in-situ growth of W on the surface of the carbon cloth 18 o 49 Self-supporting electrode material. Due to the high abundance and low price of carbon cloth, it has a large specific surface area, high electronic conductivity and ideal 3D open-pore structure. The present invention proposes to use carbon cloth as a supporting material, and adopts a solvothermal method to convert W 18 o 49 In situ growth on the support, the preparation of W with good electrocatalytic performance 18 o 49 / Carbon cloth nanomaterials.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and relates to a carbon cloth surface in-situ growth W 18 o 49 Preparation method of self-supporting electrode material. Background technique [0002] Energy is an important basis for human survival and a driving force for national economic and social development. With the rapid development of the global economy and the rapid increase in population, non-renewable fossil fuels (oil, coal, natural gas, etc.) have been over-consumed and almost exhausted. And its combustion process will produce carbon dioxide, sulfur dioxide and nitrogen oxides and other gases. These gases can cause adverse consequences such as the greenhouse effect and acid rain, and their impact on the environment and climate is becoming more and more serious. Therefore, people are eager to find new ways to solve the current energy and environmental problems. Electrochemical electrolysis of water has been recognize...

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): C25B11/031C25B11/065C25B11/077C25B1/04B01J23/30
CPCY02E60/36
Inventor 黄剑锋海国娟冯亮亮曹丽云介燕妮杨佳付常乐吴建鹏
Owner SHAANXI UNIV OF SCI & 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
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap