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

High-performance polyisatin aromatic hydrocarbon with long side chain ammonium salt, anion exchange membrane and preparation method thereof, and preparation method and application of anion exchange membrane

A technology of polyisatin arene and isatin arene, which is applied in the field of polyisatin arene and its anion exchange membrane and its preparation, can solve the problems of poor chemical stability, low conductivity, and low fuel cell performance, and achieve high alkali resistance Effects of properties, antioxidation, and high ion conductivity

Active Publication Date: 2019-06-14
DALIAN UNIV OF TECH
View PDF2 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Provide an improved method for the low conductivity and poor chemical stability of the alkaline anion membrane, especially the low performance of the fuel cell

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-performance polyisatin aromatic hydrocarbon with long side chain ammonium salt, anion exchange membrane and preparation method thereof, and preparation method and application of anion exchange membrane
  • High-performance polyisatin aromatic hydrocarbon with long side chain ammonium salt, anion exchange membrane and preparation method thereof, and preparation method and application of anion exchange membrane
  • High-performance polyisatin aromatic hydrocarbon with long side chain ammonium salt, anion exchange membrane and preparation method thereof, and preparation method and application of anion exchange membrane

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0060] Preparation of fuel cell membrane electrode: the two sides of the polyisatin anion membrane with long side chain ammonium salt are evenly sprayed with 60% by mass of Pt / C catalyst, and polypiperidine aromatic polymer is used as ionic liquid to obtain Ionic membrane coated with a catalyst layer. Place it in 1M KOH solution for 28 hours to fully exchange hydroxide ions. Wash away the residual hydroxide ions on the surface with deionized water, and form a membrane electrode with the porous carbon paper and the prepared ionic membrane coated with a catalyst coating. The area of ​​the membrane electrode is 4cm 2 , assemble the membrane electrode into a fuel cell.

[0061] Fuel cell performance test: the instrument used is produced by Scribner Associates Co. of the United States, the instrument model is 850e multi-range fuel cell test system, and the test is performed in current mode. The test condition is H 2 and O 2 Fully humidified, test temperature 60°C, 80°C, H 2 an...

Embodiment 1

[0066] Synthesis of long-chain trimethylammonium salt: Dissolve 1mol 1,6-dibromohexane in 1300mL acetone, feed trimethylamine, and react at 30°C for 48h. A white solid was obtained by filtration, washed repeatedly with acetone, and dried in vacuo to obtain a long-chain trimethylammonium salt.

[0067] Synthesis of polyisatin biphenyl: Take 10g of isatin and 60mL of trifluoroacetic acid into the reactor, add 8g of biphenyl, stir and dissolve at about 0°C. Add 40mL of trifluoromethanesulfonic acid and react at room temperature for 14h. Pour the viscous polymer into a large amount of Na 2 CO 3 The aqueous solution is fully washed with deionized water, filtered, and vacuum-dried to obtain polyisatin biphenyl. Dissolving the polymer with an appropriate amount of N-methylacetamide, precipitating in deionized water, washing with water, filtering, and drying in vacuum to obtain refined polyisatin biphenyl.

[0068] Synthesis of polyisatin biphenyl with long side chain trimethylamm...

Embodiment 2

[0076] Synthesis of long-chain N-methylpyrrolidine salt: Dissolve 1mol 1,4-dibromobutane in 1000mL acetone, add N-methylpyrrolidine, and react at 30°C for 48h. A white solid was obtained by filtration, washed repeatedly with acetone, and dried in vacuo to obtain a long-chain N-methylpyrrolidinium salt.

[0077] Synthesis of polyisatin m-terphenyl: Take 10g of isatin and 40mL of trifluoroacetic acid into the reactor, add 10g of m-terphenyl, stir and dissolve at about 0°C. Add 45mL of trifluoromethanesulfonic acid and react at room temperature for 8h. Pour the viscous polymer into a large amount of NaHCO 3 The aqueous solution is fully washed with deionized water, filtered, and vacuum-dried to obtain polyisatin m-terphenyl. Dissolving the polymer with an appropriate amount of dimethyl sulfoxide, precipitating in deionized water, washing with water, filtering, and drying in vacuum to obtain refined polyisatin m-terphenyl.

[0078] Synthesis of polyisatin m-terphenyl with long ...

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
Areaaaaaaaaaaa
Conductivityaaaaaaaaaa
Conductivityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a polyisatin aromatic hydrocarbon with a long side chain ammonium salt, an anion exchange membrane and a preparation method thereof, and a preparation method and an applicationof the anion exchange membrane, and belongs to the technical field of polymer ion exchange membranes and batteries. Isatin and aromatic hydrocarbon undergo a polymerization reaction under the catalysis of a strong acid to obtain the polyisatin aromatic hydrocarbon. The polymer is grafted with the long-chain ammonium salt to form a membrane, and the membrane undergoes ion exchange to obtain the anion exchange membrane of the polyisatin aromatic hydrocarbon. The polyisatin aromatic hydrocarbon with the long side chain ammonium salt, and the anion exchange membrane thereof have the advantages ofhigh ionic conductivity, high alkali resistance stability and high oxidation resistance, allows the power density of cells to reach 1.24 W / cm<2> when applied to alkaline fuel cells, and can be applied to the fields of the fuel cells, energy storage cells, water electrolysis, resource recycling and other electrochemical devices involving anion exchange membranes.

Description

technical field [0001] The invention belongs to the technical field of polymer electrolytes and ion exchange membranes, in particular to polyisatin aromatics without ether bonds and long side chain ammonium salts, anion exchange membranes and a preparation method thereof. Background technique [0002] Due to the global energy crisis, it is urgent to develop efficient and clean energy technologies. At present, the development and research of clean energy technology are highly valued by the state. Alkaline anion exchange membrane fuel cells (AEMFC) can use non-precious metals such as platinum, ruthenium and palladium or alloys as catalysts, with high oxygen reduction kinetics and low fuel permeability. become a research hotspot. In AEMFC, basic anion exchange membranes are generally prepared by ammonium salt polymers, but there are also bottleneck problems such as low hydroxide ion conductivity and poor chemical stability in a strong alkaline environment. At present, there i...

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): C08J5/22C08G61/02
Inventor 朱秀玲张帅
Owner DALIAN UNIV OF TECH
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