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Preparation of organic-inorganic composite membrane and application thereof in alkaline fuel cell

A composite membrane and inorganic nano-filler technology, which is applied to fuel cell parts, battery pack parts, circuits, etc., to achieve the effects of improving alkali stability, simple and convenient operation, and low swelling rate

Inactive Publication Date: 2015-08-12
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are no patent reports on the application of PEEK-Im OH / nanoparticle composite membrane materials in alkaline fuel cells

Method used

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  • Preparation of organic-inorganic composite membrane and application thereof in alkaline fuel cell
  • Preparation of organic-inorganic composite membrane and application thereof in alkaline fuel cell
  • Preparation of organic-inorganic composite membrane and application thereof in alkaline fuel cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043]Chloromethylation of polymers: add 1g of polyether ether ketone to 70ml of concentrated sulfuric acid with a concentration of 98%, add 8ml of chloromethyl methyl ether, react at 0°C for a certain period of time, pour into ice water and wash until neutral, Filter and dry to obtain the crude product of chloromethylated polyetheretherketone; pour 1g of the crude product into 16ml of organic solvent NMP, dissolve it and pour it into the precipitant for soaking, filter and dry to obtain the pure product CMPEEK of chloromethylated polyetheretherketone ; HNMR spectrum ( figure 2 ) to 4.72ppm, the characteristic peak of H in chloromethyl appeared, which proved the successful synthesis of chloromethylated polyetheretherketone;

[0044] Preparation of alkaline anion composite membrane solution:

[0045] (1) Dissolve 1 g of the chloromethylated product in 20 ml of organic solvent N,N-dimethylacetamide DMAC;

[0046] (2) Ultrasonic dispersion of inorganic nanoparticles zirconium ...

Embodiment 2

[0052] Chloromethylation of polymers: Add 1g of polyether ether ketone to 60ml of concentrated sulfuric acid with a concentration of 98%, add 20ml of chloromethyl octyl ether, and react at 0°C for 7 minutes; pour into ice water and wash until neutral , filter and dry to obtain the crude product of chloromethylated polyetheretherketone; pour the crude product into 7ml of organic solvent NMP, dissolve it and pour it into the precipitant for soaking, filter and dry to obtain the pure product CMPEEK of chloromethylated polyetheretherketone ;

[0053] Preparation of alkaline anion composite membrane solution:

[0054] (1) Dissolve 1 g of the chloromethylated product in 20 ml of organic solvent N,N-dimethylacetamide DMAC;

[0055] (2) ultrasonically disperse inorganic nanoparticles zirconium dioxide and organic solvent N,N-dimethylacetamide DMAC for 60 minutes to obtain a uniformly dispersed suspension solution; the mass percentages of inorganic nanoparticles in chloromethylated po...

Embodiment 3

[0062] Chloromethylation of polymers: Add 1 g of polyether ether ketone to 60 ml of concentrated sulfuric acid with a concentration of 98%, add 20 ml of chloromethyl octyl ether, and react at -10°C for 20 minutes; pour into ice water and wash until Neutral, filter and dry to obtain the crude product of chloromethylated polyetheretherketone; pour the crude product into 15ml of organic solvent NMP, dissolve it, pour it into the precipitant for soaking, filter and dry to obtain pure chloromethylated polyetheretherketone Product CMPEEK;

[0063] Preparation of alkaline anion composite membrane solution:

[0064] (1) Dissolve 1 g of the chloromethylated product in 20 ml of organic solvent N,N-dimethylacetamide DMAC;

[0065] (2) ultrasonically disperse inorganic nanoparticles zirconium dioxide and organic solvent N,N-dimethylacetamide DMAC for 30 minutes to obtain a uniformly dispersed suspension solution; inorganic nanoparticles account for chloromethylated polyetheretherketone m...

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Abstract

The invention relates to an alkaline anion exchange membrane and a preparation method thereof. A composite membrane is prepared by carrying out ultrasonic dispersion mixing on an inorganic nanofiller with chloromethylated polyether-ether-ketone polymer as matrix and imidazole substance as ionic agents. The inorganic nanofiller is nanometer zirconium oxide, nanometer zinc oxide or nanometer titania. The polyether-ether-ketone used by the invention is high-performance commercialized polymer materials of aromatic semicrystalline thermoplastic polymer and has high chemical stability, high heat stability and a high mechanical property; the inorganic nano-materials have excellent water-absorbing quality, an excellent mechanical property and certain hydroxyl transmissibility. The preparation method of the organic-inorganic composite membrane of the invention is simple and easy to industrialize, and the composite membrane of the invention can be applied to an alkaline fuel cell.

Description

technical field [0001] The invention relates to the field of fuel cell membrane materials, in particular to an alkaline anion composite membrane and a preparation method thereof. Background technique [0002] As an energy supply device, fuel cells have excellent performances such as high energy density, high energy conversion rate, and environmental friendliness. Alkaline fuel cells have attracted more and more attention from researchers because of their advantages of no carbonate crystallization, low oxygen reduction overpotential, and the use of non-precious metals such as cobalt, nickel, and iron instead of platinum as catalysts. [0003] As one of the key parts of the alkaline fuel cell, the anion membrane material directly affects the life span and operating effect of the fuel cell. The two key problems that are most difficult to break through in the current research on anion exchange membranes are low conductivity and poor alkali stability of the membrane. [0004] I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/16H01M8/02H01M50/446
CPCH01M50/409H01M50/403Y02E60/10
Inventor 张凤祥程丹丹
Owner DALIAN UNIV OF TECH
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