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

Fluorine-containing ion exchange membrane for fuel cell and preparation method of fluorine-containing ion exchange membrane

An ion exchange membrane and fuel cell technology, which is applied in the field of fluorine-containing ion exchange membranes for fuel cells and their preparation, and can solve the problems of affecting the mechanical properties of membranes and reducing the molecular weight of resins.

Active Publication Date: 2017-05-10
SHANDONG DONGYUE WEILAI HYDROGEN ENERGY MATERIAL CO LTD
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the ion exchange capacity (Ion Exchange Capacity, IEC) of perfluorosulfonic acid resin, it is often necessary to increase the ratio of perfluorosulfonic acid vinyl ether monomer and tetrafluoroethylene monomer, but this will reduce the molecular weight of the resin and affect the membrane mechanical properties

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
  • Fluorine-containing ion exchange membrane for fuel cell and preparation method of fluorine-containing ion exchange membrane
  • Fluorine-containing ion exchange membrane for fuel cell and preparation method of fluorine-containing ion exchange membrane
  • Fluorine-containing ion exchange membrane for fuel cell and preparation method of fluorine-containing ion exchange membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] In this embodiment, 1-vinylimidazole is grafted by the ATRP method, and the specific implementation steps are as follows:

[0029] (a) Disperse the long-chain perfluorinated ion exchange resin (n=1, p=2, EW=900g / mmol) in an aqueous solution of n-propanol (the mass ratio of n-propanol to water is 1:1), The resin concentration is 10wt%, and the solution quality is 100g.

[0030] (b) Weigh 10 g of 1-vinylimidazole monomer and 0.6 g of 2,2'-bipyridyl ligand into the solution prepared in (a).

[0031] (c) Deoxygenate the solution in (b), quickly add 0.1 g of CuBr catalyst, and deoxygenate to less than 5 ppm by freezing and pumping in liquid nitrogen.

[0032] (d) The solution in (c) was reacted at 80°C.

[0033] (e) The solution after the reaction in (d) is subjected to ion exchange, dialysis, and drying to obtain a film-forming resin.

[0034](f) the film-forming resin in (e) is dispersed in the aqueous solution of ethanol (solid content 5~50%), add a certain amount of m...

Embodiment 2

[0038] In this embodiment, 4-vinylbenzo-18-crown-6 monomer is grafted on perfluorosulfonic acid resin by ATRP method, and the specific implementation steps are as follows:

[0039] (a) Disperse the short-chain perfluorosulfonic acid ion exchange resin (n=0, p=2, EW=800g / mmol) in DMF, the resin concentration is 10wt%, and the solution mass is 100g.

[0040] (b) Weigh 10 g of 4-vinylbenzo-18-crown-6 monomer and 0.6 g of 2,2'-bipyridine ligand into the solution prepared in (a).

[0041] (c) Deoxygenate the solution in (b), quickly add 0.1 g of CuBr catalyst, and deoxygenate to less than 5 ppm by freezing and pumping in liquid nitrogen.

[0042] (d) The solution in (c) was reacted at 80°C.

[0043] (e) The solution after the reaction in (d) is subjected to ion exchange, dialysis, and drying to obtain a film-forming resin.

[0044] (f) the film-forming resin in (e) is dispersed in the aqueous solution of ethanol (solid content 5~50%), add a certain amount of lanthanum ion compoun...

Embodiment 3

[0046] In this embodiment, 4-[2,4-(5-methyl-2-benzoxazolyl)phenyl]vinylbenzoic acid methyl ester monomer is grafted on the perfluorosulfonic acid resin by ATRP method, and the specific implementation Proceed as follows:

[0047] (a) Disperse the long-chain perfluorosulfonic acid resin (n=1, p=2, EW=900g / mmol) in DMSO, the resin concentration is 5wt%, and the solution mass is 100g.

[0048] (b) Weigh 30g of 4-[2,4-(5-methyl-2-benzoxazolyl)phenyl]vinylbenzoic acid methyl ester monomer, 0.6g of 2,2'-bipyridine The ligand is added to the solution prepared in (a).

[0049] (c) Deoxygenate the solution in (b), quickly add 0.1 g of CuBr catalyst, and deoxygenate to less than 5 ppm by freezing and pumping in liquid nitrogen.

[0050] (d) The solution in (c) was reacted at 80°C.

[0051] (e) The solution after the reaction in (d) is subjected to ion exchange, dialysis, and drying to obtain a film-forming resin.

[0052] (f) the film-forming resin in (e) is dispersed in the aqueous ...

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
elastic modulusaaaaaaaaaa
elastic modulusaaaaaaaaaa
elastic modulusaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the field of functional polymer composite materials and particularly relates to a fluorine-containing ion exchange membrane for a fuel cell and a preparation method of the fluorine-containing ion exchange membrane. According to the fluorine-containing ion exchange membrane for the fuel cell, film-forming resin of the membrane has a perfluorinated main chain; a side chain contains multiple functional groups, wherein at least one functional group has an ion exchange function; the membrane contains transition metal elements with a free radical elimination effect; and the transition metal elements and the functional groups on the side chain form a complex bond. Through a hydrogen bond and electrostatic interaction among the functional groups on the side chain of the film-forming resin, the high-temperature conductivity and the elasticity modulus of a proton exchange membrane are improved and the H2 transmittance is reduced. In addition, the functional groups have complexing action, and functional groups and transition metal ions with the free radical elimination effect form a complex, thereby preventing losses of these functional materials in the whole process.

Description

technical field [0001] The invention belongs to the field of functional polymer composite materials, and in particular relates to a fluorine-containing ion exchange membrane for a fuel cell and a preparation method thereof. Background technique [0002] The world today is facing problems such as aggravated environmental pollution, rising global temperature, and depletion of oil resources. In order to protect the homeland we depend on for survival and achieve sustainable development, it is imperative to develop new energy sources. As one of new energy resources, proton exchange membrane fuel cell (PEMFC) is an energy conversion device that converts chemical energy into electrical energy. It is a green and efficient power generation technology, especially in automobiles. Industry application is considered to be the ultimate state of new energy vehicles. As one of the key materials of PEMFC, proton exchange membrane (PEM) determines the performance of PEMFC. Inside the fuel c...

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): H01M8/1039H01M8/1081H01M8/1088C08F261/06C08F226/06C08F212/14C08F220/32
CPCH01M8/1039H01M8/1081H01M8/1088C08F261/06C08F2438/01C08F220/325C08F212/14Y02E60/50
Inventor 唐军柯闫先明杜鹃孔亮刘威曹原
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