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

Acid-type sulfonate group-containing polymer, liquid composition, solid polymer electrolyte membrane, membrane electrode joint body, solid polymer fuel cell, and ion exchange membrane for water electrolysis

A sulfonic acid group and polymer technology, which is used in acid-type sulfonic acid group-containing polymers, liquid compositions, solid polymer electrolyte membranes, membrane electrode assemblies, solid polymer fuel cells and ion exchange for water electrolysis In the field of membranes, it can solve the problem of high hydrogen permeation coefficient, and achieve the effect of excellent hydrogen barrier properties and hot water resistance, high durability and less production.

Pending Publication Date: 2021-07-23
ASAHI GLASS CO LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] However, the hydrogen permeation coefficient of the acid-type sulfonic acid group-containing polymer of (1) is high

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
  • Acid-type sulfonate group-containing polymer, liquid composition, solid polymer electrolyte membrane, membrane electrode joint body, solid polymer fuel cell, and ion exchange membrane for water electrolysis
  • Acid-type sulfonate group-containing polymer, liquid composition, solid polymer electrolyte membrane, membrane electrode joint body, solid polymer fuel cell, and ion exchange membrane for water electrolysis
  • Acid-type sulfonate group-containing polymer, liquid composition, solid polymer electrolyte membrane, membrane electrode joint body, solid polymer fuel cell, and ion exchange membrane for water electrolysis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0245] Hereinafter, although an Example is given and this invention is demonstrated concretely, this invention is not limited to these examples.

[0246] Example 1, Example 2, Example 4, and Example 6 are production examples, Example 3 and Example 8 are examples, and Example 5, Example 7, Example 9, and Example 10 are comparative examples.

[0247] Hereinafter, polymer F1 and polymer F2 are collectively referred to as "polymer F". In addition, the acid-type sulfonic acid group-containing polymer of the comparative example is referred to as "polymer H'". In addition, the fluorosulfonyl group-containing polymer of the comparative example is referred to as "polymer F'".

[0248] ( 1 H-NMR)

[0249] 1 H-NMR was measured on the conditions of a frequency: 300.4 MHz, and a chemical shift standard: tetramethylsilane. As a solvent, CD was used unless otherwise specified 3 CN. Quantification of the product according to 1 The results of H-NMR analysis and the amount of internal s...

example 1-1

[0295] Into a 2 L 4-necked flask equipped with a stirrer, a condenser, a thermometer, and a dropping funnel, 560 g of chlorosulfonic acid was charged under nitrogen sealing. The flask was cooled in an ice bath, and a liquid mixture of 139.5 g of Compound 1-1 and 478.7 g of dichloromethane was added dropwise over 20 minutes while the internal temperature was kept at 20° C. or lower. Exotherm and gas evolution were observed during the dropwise addition. After completion|finish of dripping, the flask was installed in an oil bath, and it reacted for 7 hours in the state which kept internal temperature at 30-40 degreeC. The reaction proceeded with gas evolution, and a white solid was precipitated. After the reaction, the inside of the flask was reduced in pressure to distill off dichloromethane. A yellowish white solid remained in the flask. pass 1 As a result of H-NMR analysis of the solid, it was confirmed that compound 2-1 was produced.

[0296]

[0297] NMR spectrum of ...

example 1-2

[0301] The compound 2-1 obtained in Example 1-1 was not isolated, and was used as it was in the next reaction. Thionyl chloride 2049g was added in the flask of Example 1-1. The flask was heated to 80°C for 15 hours at reflux. As the reaction progressed, the reflux temperature rose from 52°C to 72°C. Gas generation was confirmed during the reaction. The point at which compound 2-1 was completely dissolved and gas generation was completed was defined as the reaction end point. The reaction liquid was transferred to a 2 L detachable flask, and the gas phase part was sealed with nitrogen gas and cooled naturally for 9 hours. As a result, a dark brown solid was deposited in the detachable flask. Unreacted thionyl chloride was removed by decantation. Toluene was added to wash the precipitated solid, and toluene was removed by decantation again. Washing with toluene was performed 3 times in total, and the amount of toluene used was 1207 g in total. The precipitated solid was dr...

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

Provided are: an acid-type sulfonate group-containing polymer that has excellent hydrogen gas barrier properties and hot water resistance and that generates less oligomer during production; a liquid composition and a solid polymer electrolyte membrane including the acid-type sulfonate group-containing polymer; and a membrane electrode joint body and a solid polymer fuel cell provided with the solid polymer electrolyte membrane. This acid-type sulfonate group-containing polymer has a perfluoromonomer unit, has no monomer unit having a halogen atom other than a fluorine atom, and has an acid-type sulfonate group, wherein: the hydrogen gas permeability coefficient under a condition of a temperature of 80 deg C and a relative humidity of 10% is less than or equal to 2.5*10-9cm3.cm / (s.cm2.cmHg); the mass decrease rate when being immersed in hot water for 24 hours at 120 deg C is less than or equal to 15 mass%; and the capacity flow rate value of a polymer having a fluorosulfonyl group which is a precursor of a polymer having the acid-type sulfonate group is greater than or equal to 220 degC.

Description

technical field [0001] The present invention relates to a polymer containing acidic sulfonic acid groups, a liquid composition, a solid polymer electrolyte membrane, a membrane-electrode assembly, a solid polymer fuel cell, and an ion-exchange membrane for water electrolysis. Background technique [0002] In the polymer electrolyte fuel cell, for example, a cell is formed by sandwiching a membrane-electrode assembly between two separators, and a plurality of cells are stacked. The membrane electrode assembly includes an anode and a cathode having a catalyst layer, and a solid polymer electrolyte membrane arranged between the anode and the cathode. The solid polymer electrolyte membrane is formed, for example, by making a polymer having an acidic sulfonic acid group into a film shape. [0003] When a solid polymer fuel cell generates electricity, the solid polymer electrolyte membrane is exposed to high temperature and high humidity conditions. Therefore, hot water resistanc...

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): C08F8/12C08F16/30H01B1/06H01B1/12H01M8/10H01M8/1039H01M8/1067C25B13/08
CPCC08F8/12H01M8/1039H01M8/1067Y02E60/50H01B1/122Y02E60/36H01M8/1004H01M2008/1095H01M8/1023C08J5/2237C08J2327/18C25B13/08C25B9/23C25B1/04C08F214/262C08F214/242C09D127/18Y02P70/50B01D71/32B01D71/82B01D2325/42B01D67/0093C08F216/1475C08F214/26B01J39/05B01J39/20C08F16/30C08J5/2231C08J2329/10
Inventor 平居丈嗣斋藤贡渡部浩行民辻慎哉上牟田大辅
Owner ASAHI GLASS 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