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

Method for preparing electrolyte membrane electrode body by utilizing interfacial polymerization reaction

An electrolyte membrane electrode, interfacial polymerization technology, used in battery electrodes, circuits, fuel cells, etc., can solve problems such as poor stability and electrical conductivity, and achieve the effects of improving dispersion performance, easy operation, and low threshold.

Inactive Publication Date: 2019-12-27
CHENDU NEW KELI CHEM SCI CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In view of the poor stability and conductivity of existing silicon-based negative electrode materials, the first purpose of the present invention is to propose a method for preparing electrolyte membrane electrode bodies using interfacial polymerization

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
  • Method for preparing electrolyte membrane electrode body by utilizing interfacial polymerization reaction
  • Method for preparing electrolyte membrane electrode body by utilizing interfacial polymerization reaction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1). Mix 2g of Pt / C catalyst particles with a particle size of 5-10nm, 200g of water, 300g of Nafion solution with a mass concentration of 10%, and 200g of active monomers with sulfonic acid groups, 2 , 2 '-bissulfonic acid Acid benzidine was ultrasonically dispersed for 30 minutes at a power of 80W, and the pH regulator was adjusted to 8 to obtain an aqueous phase catalyst slurry;

[0045] (2). Dispersing 120g of the acid chloride monomer terephthaloyl chloride and 80g of carbon powder in 600g of organic solvent dimethylformamide to obtain an oil phase; the organic solvent is chloroform;

[0046] (3). The perfluorosulfonic acid-type proton exchange membrane Nafion 117 on both sides of the surface is pressed out non-penetrating micropores by needle punching with a roller. The needle spacing is 0.2mm, and then the ultrasonic atomization equipment with a working frequency of 1.7MHz is used. The aqueous catalyst slurry in step (1) is uniformly sprayed on both sides of the ...

Embodiment 2

[0050] (1). 4g of Pt / C catalyst particles with a particle size of 5-8nm, 250g of water, 400g of Nafion solution with a mass concentration of 15%, and 200g of active monomers with sulfonic acid groups 2 , 2 '-bissulfonic acid Acid benzidine was ultrasonically dispersed for 30 minutes at a power of 60W, and the pH regulator was adjusted to 8 to obtain an aqueous phase catalyst slurry;

[0051] (2). Dispersing 120g of the acid chloride monomer terephthaloyl chloride and 80g of carbon powder in 600g of organic solvent dimethylformamide to obtain an oil phase; the organic solvent is chloroform;

[0052] (3). The perfluorosulfonic acid-type proton exchange membrane Nafion 117 on both sides of the surface is pressed out non-penetrating micropores by needle punching with a roller. The needle spacing is 0.2mm, and then the ultrasonic atomization equipment with a working frequency of 1.7MHz is used. The aqueous catalyst slurry in step (1) is uniformly sprayed on both sides of the proton...

Embodiment 3

[0056] (1). Mix 6g of Pt / C catalyst particles with a particle size of 8-10nm, 200g of water, 500g of Nafion solution with a mass concentration of 10%, and 300g of active monomers with sulfonic acid groups, 2 , 2 '-bissulfonic acid Acid benzidine was ultrasonically dispersed for 40min at a power of 90W, and the pH regulator was adjusted to 8.5 to obtain an aqueous phase catalyst slurry;

[0057] (2). Disperse 200g of the acid chloride monomer terephthaloyl chloride and 100g of carbon powder in 600g of organic solvent dimethylformamide to obtain an oil phase; the organic solvent is chloroform;

[0058] (3). The perfluorosulfonic acid-type proton exchange membrane Nafion 117 on both sides of the surface is pressed out non-penetrating micropores by needle punching with a roller. The needle spacing is 0.2mm, and then the ultrasonic atomization equipment with a working frequency of 1.7MHz is used. The aqueous catalyst slurry in step (1) is uniformly sprayed on both sides of the prot...

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
Particle sizeaaaaaaaaaa
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of fuel cell membrane electrodes and relates to a method for preparing an electrolyte membrane electrode body by utilizing an interfacial polymerization reaction. The method for preparing the electrolyte membrane electrode body by utilizing the interfacial polymerization reaction comprises the following steps of: ultrasonically dispersing a catalyst, water, a Nafion solution and an active monomer with a sulfonic acid group and adjusting a pH value to be 8-9 so as to obtain a water-phase catalyst slurry; dispersing an acyl chloride monomer and carbonpowder in an organic solvent so as to obtain an oil phase; needling two sides of a proton exchange membrane so as to form non-penetrating micropores, and uniformly spraying the water-phase catalyst slurry on the surface of the proton exchange membrane by utilizing an ultrasonic atomizer so as to obtain a water-phase catalyst slurry layer; applying the oil phase onto the surface of carbon fiber paper by means of ultrasonic atomization so as to obtain an oil phase layer; making the oil phase layer contact with the water-phase catalyst slurry layer; and repeatedly spraying the water-phase catalyst slurry on the other surface of the proton exchange membrane, adhering the carbon fiber paper adhered with the oil phase to the formed water-phase catalyst slurry layer, and carrying out hot pressing so as to form a fuel cell membrane electrode. With the method adopted, the falling off and deterioration of a catalyst can be effectively prevented.

Description

technical field [0001] The invention belongs to the technical field of fuel cell membrane electrodes, and in particular relates to a method for preparing an electrolyte membrane electrode body by interfacial polymerization. Background technique [0002] A fuel cell is a high-efficiency power generation device that directly converts hydrogen, natural gas and other fuels and oxidants into electrical energy through electrochemical reactions without combustion. In addition to the high energy conversion rate of fuel cells, the biggest advantage of fuel cells is that hydrogen fuel reserves are abundant, clean, environmentally friendly, and renewable. Currently, proton exchange membrane fuel cells (also known as hydrogen fuel cells) are mainly used in fuel cell vehicles, which use pure hydrogen as fuel and have high energy conversion efficiency, low noise, no pollution, long life, fast start-up, large specific power and output. Power can be adjusted at any time and other performan...

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): H01M4/88H01M8/1004
CPCH01M4/881H01M4/8828H01M4/8896H01M8/1004Y02E60/50
Inventor 陈庆曾军堂
Owner CHENDU NEW KELI CHEM SCI CO LTD
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