Cross-linked poly(triazole) ion liquid/polybenzimidazole high-temperature proton exchange membrane and preparation method thereof

A technology of proton exchange membrane and polybenzimidazole, which is applied in the field of cross-linked polytriazole ionic liquid/polybenzimidazole high temperature proton exchange membrane and its preparation, to achieve high conductivity, efficient conduction and avoid loss

Active Publication Date: 2017-05-31
ZHANGJIAGANG IND TECH RES INST CO LTD DALIAN INST OF CHEM PHYSICS CHINESE ACADEMY OF SCI
View PDF5 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PBI membrane materials will inevitably degrade

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
  • Cross-linked poly(triazole) ion liquid/polybenzimidazole high-temperature proton exchange membrane and preparation method thereof
  • Cross-linked poly(triazole) ion liquid/polybenzimidazole high-temperature proton exchange membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for preparing a cross-linked polytriazole ionic liquid / polybenzimidazole high-temperature proton exchange membrane, prepared through the following steps:

[0032] (1) Prepare a 0.5 mol / L 1-vinyl-1,2,4-triazole chloroform solution, pour it into a three-necked flask, and stir at 50 °C until dissolved;

[0033] (2) Add phosphoric acid dropwise, the molar ratio of 1-vinyl-1,2,4-triazole to phosphoric acid is 1:1.5;

[0034] (3) Heat and stir the solution in an oil bath, the reaction temperature is 50 °C, after 4 hours of reaction, pour the solution into deionized water, wash, filter with suction, remove excess acid and solvent, wash with ethanol several times and dry , to obtain white flocculent powder;

[0035] (4) Weigh 0.2 g of the obtained white powder, add 10 mL of dimethylacetamide, and stir to dissolve;

[0036] (5) A chain initiator azobisisobutyronitrile is added to the solution, wherein the mass content of the chain initiator is 50% of that of dimethyla...

Embodiment 2

[0045] A method for preparing a cross-linked polytriazole ionic liquid / polybenzimidazole high-temperature proton exchange membrane, prepared through the following steps:

[0046] (1) Prepare a 2mol / L 1-vinyl-1,2,4-triazole chloroform solution, pour it into a three-necked flask, and stir at 80°C until dissolved;

[0047] (2) Add trifluoromethanesulfonic acid dropwise, and the molar ratio of 1-vinyl-1,2,4-triazole to trifluoromethanesulfonic acid is 1:1.3;

[0048] (3) Heat and stir the solution in an oil bath at a reaction temperature of 80 °C. After 2 hours of reaction, pour the solution into deionized water, wash, filter with suction, remove excess acid and solvent, wash with ethanol several times, and Dried to obtain white flocculent powder;

[0049] (4) Weigh 1 g of the obtained white powder, add 15 mL of N-methylpyrrolidone, and stir to dissolve;

[0050] (5) A chain initiator azobisisobutyronitrile is added to the solution, wherein the mass content of the chain initiato...

Embodiment 3

[0059] A method for preparing a cross-linked polytriazole ionic liquid / polybenzimidazole high-temperature proton exchange membrane, prepared through the following steps:

[0060] (1) Prepare 1.5 mol / L 1-vinyl-1,2,4-triazole chloroform solution, pour it into a three-necked flask, and stir at 80 °C until dissolved;

[0061] (2) Add methanesulfonic acid dropwise, and the molar ratio of vinyl-1,2,4-triazole to methanesulfonic acid is 1:1.4;

[0062] (3) Heat and stir the solution in an oil bath, the reaction temperature is 80 °C, after 2 h of reaction, pour the solution into deionized water, wash, filter with suction, remove excess acid and solvent, wash with ethanol several times and dry , to obtain white flocculent powder;

[0063] (4) Weigh 0.8 g of the obtained white powder, add 15 mL of dimethylacetamide, and stir to dissolve;

[0064] (5) A chain initiator azobisisobutyronitrile is added to the solution, wherein the mass content of the chain initiator is 48% of dimethylace...

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
Conductivityaaaaaaaaaa
Login to view more

Abstract

The invention discloses a cross-linked poly(triazole) ion liquid/polybenzimidazole high-temperature proton exchange membrane and a preparation method thereof. The cross-linked membrane adopts polybenzimidazole as a polymer skeleton, adopts triazole ion liquid-based polyethylene as a cross-linking agent, and the cross-linked high-temperature proton exchange membrane is formed by virtue of self cross linking. The cross-linked poly(triazole) ion liquid/polybenzimidazole high-temperature proton exchange membrane proposed by the invention has good proton electric conductivity and excellent size stability in a case of not increasing the humidity, and the weaknesses of the polybenzimidazole/phosphate high-temperature membrane such as unstable electric conductivity caused by the loss of phosphoric acid can be effectively avoided. The cross-linked poly(triazole) ion liquid/polybenzimidazole high-temperature proton exchange membrane has the advantages of high electric conductivity, low air permeability and the like. The cross-linked poly(triazole) ion liquid/polybenzimidazole high-temperature proton exchange membrane proposed by the invention can be applied to a high-temperature proton exchange membrane fuel cell, a direct alcohol fuel cell, an electrochemical sensor or other electrochemical apparatuses.

Description

technical field [0001] The invention belongs to the technical field of fuel cell materials, and in particular relates to a cross-linked polytriazole ionic liquid / polybenzimidazole high-temperature proton exchange membrane and a preparation method thereof. Background technique [0002] Proton exchange membrane fuel cell (PEMFC) is a high-efficiency, clean and environment-friendly power generation device. It is an ideal power source for electric vehicles. application prospects. However, perfluorinated sulfonic acid membrane fuel cells represented by Nafion® are widely used at present, but the proton conductivity of this type of proton exchange membrane is greatly affected by the water content and temperature in the membrane, and the alcohol resistance performance is poor. The working temperature cannot exceed 80°C. Because PEMFC is limited by the operating temperature, it faces problems such as poor CO tolerance and difficult water and heat management of the system in practi...

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): C08J5/22C08L79/04C08L39/04C08F126/06H01M8/1069H01M8/1072H01M8/1048
CPCC08F126/06C08J5/2231C08J5/2256C08J5/2287C08J2339/04C08J2379/04C08J2439/04C08J2479/04C08L39/04C08L79/04C08L2203/16C08L2203/20H01M8/1048H01M8/1069H01M8/1072Y02E60/50
Inventor 于书淳张燕燕何春霞郭会娟李慧
Owner ZHANGJIAGANG IND TECH RES INST CO LTD DALIAN INST OF CHEM PHYSICS CHINESE ACADEMY OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap