High barrier and high tolerance composite proton exchange membrane and preparation method thereof

A proton exchange membrane, high barrier technology, applied in the field of proton exchange membrane, can solve the problems of high permeability and high cost, and achieve the effect of improving elastic modulus, broad application prospects, good barrier properties and mechanical resistance

Inactive Publication Date: 2018-06-29
SHANDONG DONGYUE WEILAI HYDROGEN ENERGY MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the most used proton exchange membrane is the Nafion membrane of Dupont in the United States. This type of membrane material has good proton condu

Method used

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  • High barrier and high tolerance composite proton exchange membrane and preparation method thereof
  • High barrier and high tolerance composite proton exchange membrane and preparation method thereof
  • High barrier and high tolerance composite proton exchange membrane and preparation method thereof

Examples

Experimental program
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Example Embodiment

[0044] Example 1

[0045] Dilute the purchased graphene oxide aqueous solution to 0.5mg / mL, take 2L of the diluted graphene oxide aqueous solution into a three-necked flask, add 2mL of hydrazine hydrate to it through a constant pressure funnel, stir well and put it in a 95℃ oil bath After reacting for 1 hour, the uniform black reduced graphene oxide solution obtained by the reaction was suction filtered through a membrane filter, and then vacuum dried at 50° C. to obtain an orientation layer with metallic luster and a thickness of 2 μm.

[0046] The prepared orientation layer is placed on the base film material, and a perfluorosulfonic acid resin hydroalcoholic solution (water:ethanol=1:1) with a solid content of 25wt.% is applied by solution casting, and the resin solution is infiltrated to reduce oxidation After the graphene orientation layer, the wet film enters an oven to dry for 2 hours with a temperature gradient of 45°C, 80°C, and 120°C, and the thickness of the proton excha...

Example Embodiment

[0047] Example 2

[0048] Dilute the purchased graphene oxide aqueous solution to a concentration of 0.5mg / mL, take 2L of the diluted graphene oxide aqueous solution through a membrane filter to obtain a 2μm thick graphene oxide film, and then immerse it in hydroiodic acid and hold it at 100°C The reaction was carried out for 1 hour under oil bath conditions, followed by washing with ethanol and acetone, and vacuum drying to obtain a black reduced graphene oxide orientation layer with metallic luster.

[0049] The DMF solution of the sulfonated polyether ether ketone resin with a solid content of 18wt.% is applied by die casting, the oriented layer prepared above is coated on the resin liquid film, and the material is again cast and applied through the die After the resin solution infiltrates the reduced graphene oxide orientation layer, the wet film enters an oven to dry for 4 hours with a temperature gradient of 90°C and 170°C, and the thickness of the proton exchange membrane is...

Example Embodiment

[0050] Example 3

[0051] Dilute the purchased graphene oxide aqueous solution to 0.5mg / mL, take 6L of the diluted graphene oxide aqueous solution and filter through a membrane filter to obtain two 3μm thick graphene oxide films, immerse them in hydroiodic acid and add them to 100 The reaction was carried out in an oil bath at ℃ for 2 hours, followed by washing with ethanol and acetone, and vacuum drying to obtain a black reduced graphene oxide orientation layer with metallic luster.

[0052] A hydroalcoholic solution of perfluorosulfonic acid resin (water:isopropanol=4:6) with a solid content of 19wt% was cast on the base film material through a die, and then one of the alignment layers prepared above Coated on the liquid resin film, after the resin solution penetrates the reduced graphene oxide orientation layer, the die is cast-coated and loaded; the prepared second orientation layer is coated on the liquid resin film, and the resin solution penetrates into the sheet The materi...

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Abstract

The invention relates to a high barrier and high tolerance composite proton exchange membrane and a preparation method thereof, belonging to the technical field of proton exchange membranes. The composite proton exchange membrane is prepared from 95-99.5wt% of ion exchange resin and 0.5-5wt% of an orientation layer, wherein the ion exchange resin is one of perfluorosulfonic acid resin, sulfonatedpolyarylether, sulfonated polyaryletherketone, sulfonated polythioether ketone or sulfonated polyarylether sulfone ketone; the orientation layer component is one of reduced graphene oxide, single-walled carbon nanotubes or a modified montmorillonite. The composite proton exchange membrane prepared by the method has efficient proton conduction ability, high mechanical tolerance and high barrier property. The invention also provides the preparation method of the composite proton exchange membrane; the method comprises four steps, and is scientific and reasonable, simple and easy to implement, low in cost, safe and environmentally-friendly.

Description

technical field [0001] The invention relates to a high barrier and high tolerance composite proton exchange membrane and a preparation method thereof, belonging to the technical field of proton exchange membranes. Background technique [0002] Fuel cells can achieve zero pollution in terms of environmental protection, and have the advantages of short energy supply time and high energy density, making them one of the most effective power sources to replace internal combustion engines. The performance of a fuel cell largely depends on one of its core components, the proton exchange membrane. In addition to being required to provide an effective conduction channel for protons, it also needs to have high-efficiency barrier and mechanical resistance. High barrier properties can effectively prevent methanol or hydrogen from directly diffusing from the anode to the cathode through the membrane to produce unnecessary by-products and prevent catalyst poisoning; good mechanical resist...

Claims

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Application Information

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IPC IPC(8): H01M8/1018H01M8/1025H01M8/1069
CPCH01M8/1018H01M8/1025H01M8/1069Y02E60/50
Inventor 唐军柯杜鹃孔亮刘威曹原
Owner SHANDONG DONGYUE WEILAI HYDROGEN ENERGY MATERIAL CO LTD
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