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

Integrated preparation method for membrane-membrane electrode for fuel cell

A fuel cell and membrane electrode technology, which is applied to fuel cell parts, fuel cells, battery electrodes, etc., can solve the problems of cost reduction, cumbersome routes, disadvantages, etc., and achieve process simplification, cost reduction, and batch manufacturing improvement. Effect

Active Publication Date: 2010-11-17
SUNRISE POWER CO LTD
View PDF8 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In summary, the methods in the prior art all use the existing proton exchange membrane to prepare the membrane electrode, that is to say, the preparation of the proton exchange membrane and the preparation of the electrode are carried out separately. Such a preparation process has a cumbersome route and does not Conducive to cost reduction, especially not conducive to mass 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
  • Integrated preparation method for membrane-membrane electrode for fuel cell
  • Integrated preparation method for membrane-membrane electrode for fuel cell
  • Integrated preparation method for membrane-membrane electrode for fuel cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The membrane electrode is prepared from the proton exchange membrane green body with composite structure, and the specific preparation steps are as follows:

[0057] 1. Preparation of the proton exchange resin solution 105: add a certain amount of N,N-dimethylacetamide to the 5% wt. perfluorosulfonic acid resin solution, vibrate with ultrasonic waves and set aside. The solvent system of the perfluorosulfonic acid resin solution is composed of n-propanol and water, and the mass ratio of N,N-dimethylacetamide to the proton exchange resin solution is 1:1.

[0058] 2. Preparation of proton exchange resin dilute solution 103: dilute 5% wt. perfluorosulfonic acid resin solution to 1% wt. with solvent, and the solvent system is composed of n-propanol and water. A certain amount of N,N-dimethylacetamide was then added and used after ultrasonic vibration. The mass ratio of N,N-dimethylacetamide to proton exchange resin was 2:1.

[0059] 3. Preparation of electrode slurry 106: W...

Embodiment 2

[0069] The membrane electrode is prepared by using the proton exchange membrane body with a homogeneous structure, and the specific preparation steps are as follows:

[0070] 1. Preparation of proton exchange resin solution 401: dissolve sulfonated poly(phenylene ether sulfone) in a mixed solvent of N,N-dimethylacetamide and tetrahydrofuran, the content of sulfonated poly(phenylene ether sulfone) is 15%wt., N , the mass ratio of N-dimethylacetamide and tetrahydrofuran is 2:1.

[0071] 2. Preparation of electrode slurry 406: Weigh 40% Pt / C catalyst, 5% wt. perfluorosulfonic acid solution, ethylene glycol and isopropanol dispersant into a weighing bottle, wherein the catalyst and perfluorosulfonic acid The mass ratio of sulfonic acid resin is 3.5:1, the mass ratio of catalyst and dispersant is 1:300, the mass ratio of ethylene glycol and isopropanol in the dispersant is 1:5, and the above materials are placed in an ultrasonic generator for ultrasonic Stir for 30 min to form ele...

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
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses an integrated preparation method for a membrane-membrane electrode for a fuel cell. The preparation method comprises steps of preparing a proton exchange membrane and preparing a membrane electrode; the method is characterized in that: in the step of preparing the proton exchange membrane, a proton exchange membrane blank is prepared by any of casting, impregnating and spraying methods for proton exchange resin solution, and the prepared proton exchange blank is not subjected to post-processing; in the step of preparing the membrane electrode, an electrode slurry is directly coated on the two sides of the proton exchange membrane blank on the proton exchange membrane blank not subjected to post-processing by any of screen printing, spraying and painting methods, and a membrane electrode blank in a stable state is formed; and then the membrane electrode blank is subjected to ion transformation, heat treatment and activating treatment. The membrane electrode preparation method has the characteristics of simple preparation process, easy realization of scale production, high electrochemical activity of the membrane electrode component, high mechanical strength and stable structural state.

Description

technical field [0001] The invention relates to the field of fuel cells, in particular to a method for preparing a catalyst-coated membrane electrode for a fuel cell, in particular to a method capable of integrating the preparation of a proton exchange membrane and the preparation of a catalyst-coated membrane electrode. Background technique [0002] Membrane-electrodes assembly (MEA) is mainly composed of cathode electrode, anode electrode and proton exchange membrane, in which the cathode and anode electrodes are respectively composed of gas diffusion layer (GDL) and catalytic layer (CL). MEA provides a place for the fuel cell to complete the conversion of chemical energy into electrical energy, so it undertakes tasks such as the supply of fuel and oxidant, and the export of electrons and water. In order to improve the electrochemical reaction efficiency and reduce the amount of catalyst, people have developed membrane electrode assemblies with various structures. Their ma...

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 Applications(China)
IPC IPC(8): H01M4/88H01M8/02
CPCH01M4/8828H01M4/886H01M4/8835H01M8/1086H01M8/1081H01M4/8882Y02E60/521H01M8/1069H01M4/8839Y02E60/50Y02P70/50
Inventor 邢丹敏宋书范侯中军张可张玉海明平文
Owner SUNRISE POWER 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