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

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

Active Publication Date: 2022-08-02
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 the 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 scraped on the surface of the glass plate, and further cured at 140° C. for 3 hours to obtain a perfluorosulfonic acid resin-based film with a dry film of 65 μm.

[0037] According to the weight ratio, the functional material precursor solution of ethyl orthosilicate: tetrapropyl ammonium hydroxide: sodium hydroxide: water = 1:0.5:0.5:300 was prepared, the synthesis temperature was 100°C, and the synthesis time was 3h. A 4 × 4 cm perfluorosulfonic acid resin-based membrane and 200 ml of functional material precursor solution were added to a stainless steel reactor, and the hydrothermal reaction was carried out at 80 °C for 1.5 h. The perfluorosulfonic acid resin-based membrane was taken out, soaked in excess deionize...

Embodiment 2

[0040] In this example, 50 g of the 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 scraped on the surface of the glass plate, and further cured at 130° C. for 5 hours to obtain a perfluorosulfonic acid resin-based film with a dry film of 32 μm.

[0041] According to the weight ratio, the 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 5h. A 4 × 4 cm perfluorosulfonic acid resin-based membrane and 200 ml of functional material precursor solution were added to a stainless steel reactor, and the hydrothermal reaction was carried out at 120 °C for 0.5 h. The perfluorosulfonic acid resin-based membrane was taken out, soaked in excess deionized ...

Embodiment 3

[0044] In this example, 200 g of the 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 scraped on the surface of the glass plate, and further cured at 110° C. for 3 hours to obtain a perfluorosulfonic acid resin-based film with a dry film of 23 μm.

[0045]According to the weight ratio, the functional material precursor solution of ethyl orthosilicate: tetrapropyl ammonium 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. A 4 × 4 cm perfluorosulfonic acid resin-based membrane and 200 ml of functional material precursor solution were added to a stainless steel reactor, and the hydrothermal reaction was carried out at 140 °C for 6 h. The perfluorosulfonic acid resin-based membrane was taken out, soaked in excess deioniz...

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Abstract

The invention relates to the field of ion exchange membranes, in particular to a multi-layer composite proton exchange membrane containing perfluorosulfonic acid resin and a preparation method thereof. Dissolve the perfluorosulfonic acid resin in a corresponding solvent to form a preparation solution of a certain concentration, scrape it into a film at a certain temperature and atmosphere, and volatilize the solvent to form a film, and further use the perfluorosulfonic acid resin film as a perfluorosulfonic acid film. Acid resin-based membrane, an inorganic functional layer is prepared on its surface by a hydrothermal method, and a composite proton exchange membrane is finally obtained. The invention solves the problem of low ion selectivity of the traditional perfluorosulfonic acid membrane through the composite inorganic functional layer, and meanwhile the mechanical properties of the composite membrane are significantly improved. The performance of the product prepared by the invention is better than that of the commercial product, and the cost is lower than that of similar products, which is of great significance for the wider application of the ion exchange membrane.

Description

technical field [0001] The invention relates to the field of ion exchange membranes, in particular to a multi-layer 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 the greenhouse effect, and it is the trend of today's energy development. Among them, renewable energy power generation, mainly wind energy and solar energy, will gradually and rapidly become the main energy form. 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 (especiall...

Claims

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Application Information

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Patent Type & Authority Patents(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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