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Multilayer composite proton exchange film containing perfluorosulfonic acid resin and preparation method thereof

A perfluorosulfonic acid resin and proton exchange membrane technology, applied in the field of ion exchange membranes, can solve the problems of poor diaphragm performance and high cost, and achieve the effects of high compatibility, large-scale production, and high ion selectivity

Active Publication Date: 2019-08-09
辽宁科京新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a multi-layer composite proton exchange membrane containing perfluorosulfonic acid resin and its preparation method, which can solve the problems of poor performance and high cost of existing diaphragms

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] In this example, 100 g of recovered perfluorosulfonic acid resin was dissolved in N,N-dimethylformamide, and centrifuged at 5000 rpm for 20 min to obtain a film-forming solution with a mass concentration of 15%. A wet film with a thickness of 150 μm was scratched on the surface of a glass plate, and cured at 140° C. for 3 hours to obtain a perfluorosulfonic acid resin-based film with a dry film of 65 μm.

[0037] In terms of weight ratio, a functional material precursor solution of ethyl orthosilicate: tetrapropylammonium hydroxide: sodium hydroxide: water = 1:0.5:0.5:300 was prepared, the synthesis temperature was 100° C., and the synthesis time was 3 hours. Add a 4×4cm perfluorosulfonic acid resin base film and 200ml functional material precursor solution into a stainless steel reaction kettle, and conduct a hydrothermal reaction at 80°C for 1.5h. The perfluorosulfonic acid resin base film was taken out, soaked in excess deionized water, and then dried at 120°C. The ...

Embodiment 2

[0040] In this example, 50 g of recovered perfluorosulfonic acid resin was dissolved in N,N-dimethylformamide, and centrifuged at 3000 rpm for 30 min to obtain a film-forming solution with a mass concentration of 10%. A wet film with a thickness of 100 μm was scratched on the surface of a glass plate, and cured at 130° C. for 5 hours to obtain a perfluorosulfonic acid resin-based film with a dry film of 32 μm.

[0041] In terms of weight ratio, a functional material precursor solution of ethyl orthosilicate: tetrapropylammonium hydroxide: sodium hydroxide: water = 1:0.3:0.3:150 was prepared, the synthesis temperature was 80° C., and the synthesis time was 5 hours. Add a 4×4cm perfluorosulfonic acid resin base film and 200ml functional material precursor solution into a stainless steel reaction kettle, and conduct a hydrothermal reaction at 120°C for 0.5h. The perfluorosulfonic acid resin base film was taken out, soaked in excess deionized water, and then dried at 120°C. The p...

Embodiment 3

[0044] In this example, 200 g of recovered perfluorosulfonic acid resin was dissolved in N,N-dimethylacetamide, and centrifuged at 3000 rpm for 20 min to obtain a film-forming solution with a mass concentration of 20%. A wet film with a thickness of 40 μm was scratched on the surface of a glass plate, and further cured and molded at 110° C. for 3 hours to obtain a perfluorosulfonic acid resin-based film with a dry film of 23 μm.

[0045]In terms of weight ratio, a functional material precursor solution of ethyl orthosilicate: tetrapropylammonium hydroxide: sodium hydroxide: water = 1:0.15:0.25:200 was prepared, the synthesis temperature was 120° C., and the synthesis time was 1 h. Add a 4×4cm perfluorosulfonic acid resin base film and 200ml functional material precursor solution into a stainless steel reaction kettle, and conduct a hydrothermal reaction at 140°C for 6h. The perfluorosulfonic acid resin base film was taken out, soaked in excess deionized water, and then dried a...

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Abstract

The invention relates to the ion exchange film field and particularly relates to a multilayer composite proton exchange film containing perfluorosulfonic acid resin and a preparation method thereof. The perfluorosulfonic acid resin is dissolved in corresponding solvent to form preparation liquid having a certain concentration, a film is formed through scraping under the certain temperature and atmosphere, the solvent is volatilized into a film, the perfluorosulfonic acid resin film is taken as a perfluorosulfonic acid resin base film, an inorganic functional layer is prepared on the surface thereof through the hydrothermal method, and the composite proton exchange film is finally obtained. The method is advantaged in that a problem of low ion selectivity of a conventional perfluorosulfonicacid film is solved through the composite inorganic functional layer, moreover, mechanical properties of the composite film are significantly improved, produced products have better performance thancommercially available products, the cost is lower than similar products, and the method is of great significance for wider application of ion exchange films.

Description

technical field [0001] The invention relates to the field of ion exchange membranes, in particular to a multilayer composite proton exchange membrane containing perfluorosulfonic acid resin and a preparation method thereof. Background technique [0002] Ion exchange membranes are widely used in the field of energy storage. Vigorously developing renewable energy is an important way to deal with environmental pollution and greenhouse effect, and it is the trend of energy development today. Among them, renewable energy power generation mainly based on wind energy and solar energy will gradually and rapidly become the main form of energy. However, the intermittent and discontinuous characteristics of output are the main problems restricting the application and development of these forms of renewable energy, which need to be overcome by developing corresponding energy storage technologies. As the first choice for large-scale electrochemical energy storage, flow batteries (especi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/1041H01M8/1086H01M8/18
CPCH01M8/1055H01M8/1086H01M8/188Y02E60/50
Inventor 肖伟陈晖赵丽娜彭海泉吴慧哲
Owner 辽宁科京新材料有限公司
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