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

High barrier and high tolerance composite proton exchange membrane and preparation method thereof

A proton exchange membrane, high barrier technology, applied in the field of proton exchange membrane, can solve the problems of high permeability and high cost, and achieve the effect of improving elastic modulus, broad application prospects, good barrier properties and mechanical resistance

Inactive Publication Date: 2018-06-29
SHANDONG DONGYUE WEILAI HYDROGEN ENERGY MATERIAL CO LTD
View PDF5 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the most used proton exchange membrane is the Nafion membrane of Dupont in the United States. This type of membrane material has good proton conductivity and chemical stability, but high cost and high permeability have become the main reasons for its wide application in the field of fuel cells. obstacle

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
  • High barrier and high tolerance composite proton exchange membrane and preparation method thereof
  • High barrier and high tolerance composite proton exchange membrane and preparation method thereof
  • High barrier and high tolerance composite proton exchange membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Dilute the purchased graphene oxide aqueous solution to a concentration of 0.5mg / mL, take 2L of the diluted graphene oxide aqueous solution and add it to a three-necked flask, add 2mL of hydrazine hydrate to it through a constant pressure funnel, stir well and put it in a 95°C oil bath After reacting for 1 h, the obtained uniform black reduced graphene oxide solution was suction-filtered through a membrane filter, and then vacuum-dried at 50° C. to obtain an alignment layer with a metallic luster and a thickness of 2 μm.

[0046] The prepared alignment layer is placed on the base film material, and the perfluorosulfonic acid resin hydroalcoholic solution (water:ethanol=1:1) with a solid content of 25wt.% is applied by solution casting, and the resin solution is infiltrated into the reduction oxidation After the graphene alignment layer, the wet film was dried in an oven for 2 hours, the temperature gradient was 45°C, 80°C, and 120°C, and the thickness of the proton excha...

Embodiment 2

[0048] Dilute the concentration of the purchased graphene oxide aqueous solution to 0.5 mg / mL, take 2L of the diluted graphene oxide aqueous solution and filter it through a membrane filter to obtain a 2 μm thick graphene oxide film, then immerse it in hydroiodic acid and heat it at 100 °C React for 1 h under the condition of an oil bath, then wash with ethanol and acetone successively, and dry in vacuum to obtain a black reduced graphene oxide alignment layer with metallic luster.

[0049] The DMF solution of sulfonated polyether ether ketone resin with a solid content of 18wt.% is casted and coated through a die, and the above-prepared orientation layer is coated on the resin liquid film, and the material is cast again through a die. , after the resin solution penetrated into the reduced graphene oxide alignment layer, the wet film was dried in an oven for 4 hours with a temperature gradient of 90°C and 170°C, and the thickness of the proton exchange membrane was 50 μm.

Embodiment 3

[0051] Dilute the concentration of the purchased graphene oxide aqueous solution to 0.5mg / mL, take 6L of the diluted graphene oxide aqueous solution and filter through a membrane filter to obtain two 3 μm thick graphene oxide films, which are immersed in hydroiodic acid and heated at 100 The reaction was carried out under the condition of an oil bath at ℃ for 2 hours, and then washed with ethanol and acetone successively, and dried in vacuum to obtain a black reduced graphene oxide alignment layer with metallic luster.

[0052]A perfluorosulfonic acid resin hydroalcoholic solution (water: isopropanol = 4:6) with a solid content of 19 wt% is cast on the base film material through a die head, and then one of the alignment layers prepared above is Cover it on the resin liquid film, and wait until the resin solution penetrates into the reduced graphene oxide orientation layer, and then cast the material on the die head; cover the prepared second orientation layer on the resin liqui...

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
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a high barrier and high tolerance composite proton exchange membrane and a preparation method thereof, belonging to the technical field of proton exchange membranes. The composite proton exchange membrane is prepared from 95-99.5wt% of ion exchange resin and 0.5-5wt% of an orientation layer, wherein the ion exchange resin is one of perfluorosulfonic acid resin, sulfonatedpolyarylether, sulfonated polyaryletherketone, sulfonated polythioether ketone or sulfonated polyarylether sulfone ketone; the orientation layer component is one of reduced graphene oxide, single-walled carbon nanotubes or a modified montmorillonite. The composite proton exchange membrane prepared by the method has efficient proton conduction ability, high mechanical tolerance and high barrier property. The invention also provides the preparation method of the composite proton exchange membrane; the method comprises four steps, and is scientific and reasonable, simple and easy to implement, low in cost, safe and environmentally-friendly.

Description

technical field [0001] The invention relates to a high barrier and high tolerance composite proton exchange membrane and a preparation method thereof, belonging to the technical field of proton exchange membranes. Background technique [0002] Fuel cells can achieve zero pollution in terms of environmental protection, and have the advantages of short energy supply time and high energy density, making them one of the most effective power sources to replace internal combustion engines. The performance of a fuel cell largely depends on one of its core components, the proton exchange membrane. In addition to being required to provide an effective conduction channel for protons, it also needs to have high-efficiency barrier and mechanical resistance. High barrier properties can effectively prevent methanol or hydrogen from directly diffusing from the anode to the cathode through the membrane to produce unnecessary by-products and prevent catalyst poisoning; good mechanical resist...

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): H01M8/1018H01M8/1025H01M8/1069
CPCH01M8/1018H01M8/1025H01M8/1069Y02E60/50
Inventor 唐军柯杜鹃孔亮刘威曹原
Owner SHANDONG DONGYUE WEILAI HYDROGEN ENERGY MATERIAL 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