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Carboxyl-containing sulfonated polyaryletherketone sulfone/phosphotungstic acid-loaded ionic liquid metal organic framework composite membrane and preparation method thereof

A technology of sulfonated polyaryletherketone sulfone and sulfonated polyaryletherketone, which can be used in electrochemical generators, fuel cells, electrical components, etc., and can solve problems such as limiting practical applications.

Pending Publication Date: 2020-12-25
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the leaching problem of ionic liquids has not been resolved, which limits their practical applications.

Method used

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  • Carboxyl-containing sulfonated polyaryletherketone sulfone/phosphotungstic acid-loaded ionic liquid metal organic framework composite membrane and preparation method thereof
  • Carboxyl-containing sulfonated polyaryletherketone sulfone/phosphotungstic acid-loaded ionic liquid metal organic framework composite membrane and preparation method thereof
  • Carboxyl-containing sulfonated polyaryletherketone sulfone/phosphotungstic acid-loaded ionic liquid metal organic framework composite membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A kind of preparation method of the MIL-100 (Fe) composite proton exchange membrane of carboxyl-containing sulfonated polyarylether ketone sulfone and heteropolyacid anion-based ionic liquid for fuel cells, the specific steps are as follows:

[0035](1) Add 0.2 mol of carboxyl-containing bisphenol monomer, 0.8 mol of 4,4'-difluorobenzophenone, 0.8 mol of bisphenol monomer and 0.2 mol of 4,4'-sulfonated dichlorobis Add phenylsulfone into the three-necked flask and mix evenly, add anhydrous potassium carbonate, toluene and sulfolane to the above-mentioned three-necked flask and reflux with water at 110-140°C for 4-6 hours under the protection of nitrogen, let off the water-carrying agent and raise the temperature to 170-180°C, react for 20-30 hours to obtain carboxyl-containing sulfonated polyaryletherketone sulfone, wherein the carboxyl-containing bisphenol monomer is 4-carboxyphenylhydroquinone, and the bisphenol monomer is bisphenol a.

[0036] (2) Dissolve ferric chl...

Embodiment 2

[0042] ((1) 0.2mol of carboxyl-containing bisphenol monomers, 0.8mol of 4,4'-difluorobenzophenone, 0.8mol of bisphenol monomers and 0.2mol of 4,4'-sulfonated dichloro Add diphenyl sulfone into the three-necked flask and mix evenly, add anhydrous potassium carbonate, toluene and sulfolane to the above-mentioned three-necked flask and reflux with water at 110-140°C for 4-6 hours under the protection of nitrogen, let off the water-carrying agent and raise the temperature to 170-180°C, react for 20-30 hours to obtain carboxyl-containing sulfonated polyaryletherketone sulfone, wherein the carboxyl-containing bisphenol monomer is 4-carboxyphenylhydroquinone, and the bisphenol monomer is bisphenol Phenol A.

[0043] (2) Dissolve ferric chloride hexahydrate, trimesic acid, and phosphotungstic acid in deionized water to obtain a mixed solution, and transfer the obtained mixed solution to a stainless steel reactor lined with Teflon, at 130 ° C After reacting for 72 hours, the product o...

Embodiment 3

[0049] (1) Add 0.2 mol of carboxyl-containing bisphenol monomer, 0.8 mol of 4,4'-difluorobenzophenone, 0.8 mol of bisphenol monomer and 0.2 mol of 4,4'-sulfonated dichlorobis Add phenylsulfone into the three-necked flask and mix evenly, add anhydrous potassium carbonate, toluene and sulfolane to the above-mentioned three-necked flask and reflux with water at 110-140°C for 4-6 hours under the protection of nitrogen, let off the water-carrying agent and raise the temperature to 170-180°C, react for 20-30 hours to obtain carboxyl-containing sulfonated polyaryletherketone sulfone, wherein the carboxyl-containing bisphenol monomer is 4-carboxyphenylhydroquinone, and the bisphenol monomer is bisphenol a.

[0050] (2) Dissolve ferric chloride hexahydrate, trimesic acid, and phosphotungstic acid in deionized water to obtain a mixed solution, and transfer the obtained mixed solution to a stainless steel reactor lined with Teflon, at 130 ° C After reacting for 72 hours, the product obt...

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Abstract

The invention discloses a carboxyl-containing sulfonated polyaryletherketone sulfone / phosphotungstic acid-loaded ionic liquid metal organic framework composite membrane and a preparation method thereof, and belongs to the field of polymer chemistry and proton exchange membrane fuel cells. The mass ratio of carboxyl-containing sulfonated polyaryletherketone sulfone to MIL-100 (FE) loaded with heteropoly acid anion-based ionic liquid is 1: (0.02-0.08). The MIL-100 (Fe) loaded with the heteropoly acid anion-based ionic liquid is provided with a large mesoporous cage and a small microporous window, and heteropoly acid anions are limited in a cavity of the MIL100 (Fe). By reacting the imidazole rings in the ionic liquid with heteropoly acid anions, the ionic liquid based on heteropoly acid anions is loaded in the MIL100 (Fe) without loss. The heteropoly acid anion-based ionic liquid loaded in the MIL100 (Fe) contains a large amount of imidazole rings, bridging oxygen W-O-W bonds and terminal oxygen W = O bonds, and proton transport of the hybrid membrane can be promoted. The MIL100 (Fe) can also enhance the mechanical properties, dimensional stability and alcohol resistance of the hybrid membrane. The proton conductivity of the composite proton exchange membrane at 80 DEG C is 0.041 S cm<-1> to 0.123 S cm<-1>, and the thickness of the hybrid membrane is 15-25 [mu] m.

Description

technical field [0001] The invention belongs to the fields of polymer chemistry and proton exchange membrane fuel cells, and specifically relates to a carboxyl-containing sulfonated polyarylether ketone sulfone / loaded phosphotungstic acid-ionic liquid metal organic framework composite membrane and a preparation method thereof. Background technique [0002] Proton Exchange Membranes (PEMs) are the core components of Proton Exchange Membrane Fuel Cells (PEMFCs). Currently, the most commonly used PEM is the commercial perfluorosulfonic acid resin (Nafion), but the high cost and methanol crossover of Nafion greatly limit its application in PEM fuel cells. Therefore, research on alternative polymer electrolyte materials has been developed in the past. Among them, sulfonated poly(arylene ether ketone sulfone), SPAEKS has become the most promising because of its high proton conductivity, good stability, simple preparation method and low cost. proton exchange membrane material. H...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/1048H01M8/1072C08G75/23
CPCH01M8/1048H01M8/1072C08G75/23Y02E60/50
Inventor 徐晶美张振国任佳会赵鹏云孟令鑫王哲王浩
Owner CHANGCHUN UNIV OF TECH
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