Composite anion-exchange membrane and preparation method thereof

A composite anion and exchange membrane technology, applied in the coating and other directions, can solve the problems of complex composite membrane forming process, difficulty in scaling up, etc., and achieve the effects of easy mass production, improved stability, and simple preparation method.

Active Publication Date: 2016-07-13
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings of traditional anion exchange membranes, prepare a new type of composite anion exchange membrane, and provide a molding process to solve the problems of complex molding process and difficult enlargement of composite membranes

Method used

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  • Composite anion-exchange membrane and preparation method thereof
  • Composite anion-exchange membrane and preparation method thereof
  • Composite anion-exchange membrane and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] 1,2-dimethylimidazolium salt-type polyaryletherketone is prepared by traditional homogeneous solution reaction method, each mole of repeating unit contains about 1.7 moles of imidazolium salt functional groups, and a mixed solution with a solid content of 5wt% is prepared. The solvent used for NMP. Add ethanol according to the mass ratio of NMP:ethanol=1:5, add TEOS according to the mass ratio of polymer resin: TEOS=1:0.15, add surfactant according to the mass ratio of polymer resin: Tritinx-100=1:0.05, Stir evenly to obtain a spray solution. Expanded polytetrafluoroethylene with a pore size of 0.22 μm and a thickness of 20 μm was used as the base membrane, fixed with a plastic frame, and placed on a vacuum heating table. Set the temperature of the hot stage to 150°C, and keep the vacuum pump on. Use a spray gun with a diameter of 0.5mm to evenly spray the spray solution on the surface of the expanded polytetrafluoroethylene, and repeat the spraying to the surface of ...

Embodiment 2

[0032] The quaternary ammonium salt type polyaryletherketone is prepared by the traditional homogeneous solution reaction method, and each mole of repeating units contains about 1.7 moles of quaternary ammonium salt functional groups, and a mixed solution with a solid content of 5wt% is prepared, and the selected solvent is NMP and DMSO. The mixture, the ratio is 1:0.5. Add ethanol according to the mass ratio of mixed liquid: ethanol = 1:5, add TEOS according to the mass ratio of polymer resin: TEOS = 1:0.25, add surfactant at the mass ratio of Tritinx-100 = 1:0.10, stir evenly to get spray solution. Expanded polytetrafluoroethylene with a pore size of 0.45 μm and a thickness of 20 μm was used as the base membrane, fixed with a plastic frame, and placed on a vacuum heating table. Set the temperature of the hot stage to 180°C, and keep the vacuum pump on. Use a spray gun with a diameter of 0.5mm to evenly spray the spray solution on the surface of the expanded polytetrafluoro...

Embodiment 3

[0034] It is prepared by reacting 2-methylimidazole and 6-bromobutane under the catalysis of NaH at 0-6°C, and passing through the column to obtain pure N1-butyl-2-methylimidazole. N1-butyl-2-methylimidazolium salt type polystyrene was prepared by traditional homogeneous solution reaction method, and each mole of repeating units contained about 0.6 moles of imidazolium salt functional groups, and a mixed solution with a solid content of 5wt% was prepared. The solvent of choice is DMAc. Add ethanol according to the volume ratio of DMAc:ethanol=1:5, add TEOS according to the mass ratio of polymer resin:TEOS=100:15, add surfactant at the mass ratio of Tritinx-100=1:0.10, and stir evenly to obtain a spray solution . Expanded polytetrafluoroethylene with a pore size of 0.22 μm and a thickness of 20 μm was used as the base membrane, fixed with a plastic frame, and placed on a vacuum heating table. Set the temperature of the hot stage to 150°C, and keep the vacuum pump on. Use a s...

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Abstract

Disclosed is a composite anion-exchange membrane, which comprises a polytetrafluoroethylene microporous base membrane, an anion-exchange exchange resin and TESO which are uniformly immersed inside the base membrane and are attached to two side surfaces of the base membrane. The carrying capacity of the anion-exchange exchange resin on the polytetrafluoroethylene microporous base membrane is 4-10 mg/cm2, and the carrying capacity of TESO on the polytetrafluoroethylene microporous base membrane is 0.2-2 mg/cm2. The anion-exchange exchange resin is one or more than two of quaternary ammonium salt polyarylether ketone/sulphone, 1-methylimidazole polyarylether ketone/sulphone, 1-methyl-2-alkyl imidazole polyarylether ketone/sulphone, quaternary ammonium salt polystyrene, imidazole polystyrene, 1- methylimidazole polystyrene, and 1-methyl-2-alkyl imidazole polystyrene. Through comparison with the prior art, the composite anion-exchange membrane has advantages of high mechanical strength and good stability in an alkali liquor. The preparation method of the membrane is simple, is wide in applicability, and is suitable for massive production.

Description

technical field [0001] The invention belongs to the field of polymer material preparation, and in particular relates to a composite anion exchange membrane for a fuel cell and a preparation method thereof. Background technique [0002] Alkaline anion exchange membrane fuel cells can choose non-noble metal materials such as silver, nickel, and cobalt as catalysts, which overcomes the dependence of traditional proton exchange membrane fuel cells on Pt-based noble metals, and has broad application prospects. However, the disadvantages of alkaline anion exchange electrolyte membranes such as low service life, low dimensional stability, and low electrical conductivity restrict the development of alkaline anion exchange membrane fuel cells. Research and development of new anion exchange membranes is one of the hotspots in the development of high performance alkaline anion exchange membrane fuel cells. [0003] Using porous materials as supports to prepare polymer electrolyte comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/04C08J7/14C08J7/12C08L27/18
Inventor 孙公权马文佳王素力杨丛荣
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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