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Anion-exchange membrane for fuel cells and preparation method thereof, and fuel cell using anion-exchange membrane

An anion exchange membrane, fuel cell technology, applied in fuel cells, circuits, electrical components, etc., to achieve the effects of high electrical conductivity, chemical stability and mechanical properties improvement, and simple preparation methods

Inactive Publication Date: 2016-06-22
深圳市晓龙氢能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, studies have found that imidazolium salt-based anion exchange membranes also degrade under strong alkaline conditions

Method used

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  • Anion-exchange membrane for fuel cells and preparation method thereof, and fuel cell using anion-exchange membrane
  • Anion-exchange membrane for fuel cells and preparation method thereof, and fuel cell using anion-exchange membrane

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Experimental program
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Effect test

Embodiment 1

[0026] A method for preparing an anion exchange membrane for a fuel cell, comprising the steps of:

[0027] 1) Dissolve vinylimidazole (18.82g, 0.2mol) and 1,3-dibromoadamantane (29.4g, 0.1mol) in acetonitrile (113g), then add 25gKOH therein, and under nitrogen atmosphere at room temperature Stir for 4 hours. Then rotary evaporate under vacuum to remove the solvent, the obtained crude product was extracted 5 times with dichloromethane, then the organic phase was washed with deionized water, finally dehydrated with anhydrous magnesium sulfate, filtered, rotary evaporated, and heated in vacuum at 40°C Bake down for 12 hours to obtain a polymeric ionic liquid;

[0028] 2) Mix 30 g of the polymeric ionic liquid obtained in step 1), 10 g of methyl methacrylate and 1 g of emulsifier polyoxypropylene polyvinyl glyceryl ether, drop it on a glass plate 20 microns apart, and place it under a nitrogen atmosphere In the radiation field, the cobalt 60-γ radiation method was used to irrad...

Embodiment 2

[0031] A method for preparing an anion exchange membrane for a fuel cell, comprising the steps of:

[0032] 1) Dissolve vinylimidazole (18.82g, 0.2mol) and 1,3-dibromoadamantane (29.4g, 0.1mol) in acetonitrile (113g), then add 30gKOH therein, and under nitrogen atmosphere at room temperature Stir for 4 hours. Then rotary evaporation under vacuum to remove the solvent, the obtained crude product was extracted 3-5 times with dichloromethane, then the organic phase was washed with deionized water, finally dehydrated with anhydrous magnesium sulfate, filtered, rotary evaporation, and in vacuo Bake at 40°C for 12 hours to obtain a polymeric ionic liquid;

[0033] 2) 30g of the polymeric ionic liquid obtained in step 1), 10g of acrylonitrile and 1g of emulsifier sodium dodecylbenzenesulfonate are mixed, dropped on a glass plate 30 microns apart, and placed in a radiation chamber under a nitrogen atmosphere. In the field, the cobalt 60-γ radiation method was used to irradiate, and ...

Embodiment 3

[0036] A method for preparing an anion exchange membrane for a fuel cell, comprising the steps of:

[0037] 1) Dissolve vinylimidazole (18.82g, 0.2mol) and 1,3-dibromoadamantane (29.4g, 0.1mol) in acetonitrile (112.92g), then add 22.4gKOH, and nitrogen at room temperature Stir under atmosphere for 4 hours. Then rotary evaporate under vacuum to remove the solvent, the obtained crude product was extracted 3 times with dichloromethane, then the organic phase was washed with deionized water, finally dehydrated with anhydrous magnesium sulfate, filtered, rotary evaporated, and heated in vacuum at 30°C Bake down for 12 hours to obtain a polymeric ionic liquid;

[0038] 2) Mix 30 g of the polymeric ionic liquid obtained in step 1), 10 g of sulfonated styrene and 1 g of emulsifier nonylphenol polyoxyethylene ether, drop it on a glass plate 22 microns apart, and put it into a In the radiation field, the cobalt 60-γ radiation method was used to irradiate for 30 minutes, and the polyme...

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Abstract

The invention discloses an anion-exchange membrane for fuel cells and a preparation method thereof, and a fuel cell using the anion-exchange membrane. The preparation method of the anion-exchange membrane comprises the following steps: mixing a polymer ionic liquid, a polymer monomer A and an emulsifier, dropwisely adding the mixture on a glass plate, putting the glass plate in a radiation field in a nitrogen atmosphere, carrying out radiation by a cobalt 60-gamma radiation process for 30-40 minutes to initiate polymerization radiation free radical reaction, and immersing the obtained polymer membrane in a 0.5-1 mol / L KOH solution at 50-60 DEG C for 60-78 hours to perform ion exchange; and finally, immersing the membrane in deionized water until the residual deionized water is neutral. The anion-exchange membrane disclosed by the invention has the advantages of favorable alkali resistance, favorable mechanical properties, higher ionic conductivity and higher heat stability.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to an anion exchange membrane and a preparation method thereof, in particular to an anion exchange membrane for a fuel cell and a preparation method thereof. Background technique [0002] The anion exchange membrane is a key part of the anion exchange membrane fuel cell, which plays a dual role of transferring anions and blocking raw materials in the fuel cell. Its performance directly affects the service life of the fuel cell. [0003] Excellent polymer anion exchange membranes for alkaline fuel cells not only have high ionic conductivity, good thermal and chemical stability, but also good mechanical properties and alkali resistance. However, the traditional quaternary ammonium salt polymer anion exchange membrane has poor thermal and chemical stability, and it is easily degraded by mechanisms such as Hofman elimination reaction, nucleophilic substitution (SN2) and ylide c...

Claims

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Application Information

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IPC IPC(8): C08J5/22C08F226/06C08F220/14C08F220/48C08F212/14C08F2/30C08F2/46C08F2/44C08L39/04H01M8/1041H01M8/1069
CPCC08F2/30C08F2/44C08F2/46C08F226/06C08J5/2231C08J5/2237C08J2339/04H01M8/1041H01M8/1069H01M2008/1095C08F220/14C08F220/48C08F212/14Y02E60/50Y02P70/50
Inventor 不公告发明人
Owner 深圳市晓龙氢能科技有限公司
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