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Preparation method of triazole-based ionic crystal / polymer composite film

An ionic crystal and triazole-based technology, which is applied in the field of preparation of triazole-based ionic crystal/polymer composite membranes, can solve the problems of unstable electrochemical performance, easy loss, and reduced conductivity of the membrane, and is suitable for Large-scale production, not easy to lose, high conductivity effect

Active Publication Date: 2016-06-22
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

However, the ionic liquid is a liquid at room temperature, and the free ionic liquid in the composite membrane is easy to lose, resulting in unstable electrochemical performance of the membrane and a decrease in conductivity.

Method used

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  • Preparation method of triazole-based ionic crystal / polymer composite film
  • Preparation method of triazole-based ionic crystal / polymer composite film
  • Preparation method of triazole-based ionic crystal / polymer composite film

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Preparation of 1H-1,2,4-triazole methylsulfonate ([Tri][MS]): Measure 50ml of acetone into a three-necked flask, weigh 3.0011g of 1H-1,2,4-triazol Azole, dissolved in acetone, stirred to dissolve. Add 6.2896g methanesulfonic acid (mol ratio: triazole: methanesulfonic acid = 1:1.5) dropwise. With the addition of methanesulfonic acid, white crystals are formed in the solution and react for 2 hours. Filter and finally wash with ethyl acetate suction. Dry at 60°C for later use.

[0030] Preparation of 1H-1,2,4-triazole methylsulfonate ([Tri][MS]) / Nafion composite membrane: Weigh 2.0300g methanol, add 0.7202g1H-1 to a 60*30cm volumetric flask ,2,4-Triazole methanesulfonate ([Tri][MS]), prepared as [Tri][MS] / methanol solution. Soak 4*4cm Nafion212 membrane into [Tri][MS] / methanol solution, the size after swelling: 4.7*4.9cm. Soak in a vacuum oven for 24 hours at room temperature. Take it out and dry it at room temperature. Melt 10.0025g [Tri][MS] at 150°C, dip the membr...

Embodiment 2

[0033] Preparation of 1H-1,2,4-triazole methylsulfonate ([Tri][MS]) / non-woven fabric composite membrane: Weigh 2.5305g methanol, add 0.9352g1H to a 60*30cm volumetric flask -1,2,4-Triazole methanesulfonate ([Tri][MS]), formulated as [Tri][MS] / methanol solution. Soak a 4*4cm non-woven fabric into the [Tri][MS] / methanol solution. Soak in a vacuum oven for 24 hours at room temperature. Take it out and dry it at room temperature. The membrane was immersed in molten [Tri][MS] at 150 °C. After sealing and immersing for 24 hours, take it out and wipe off the surface [Tri][MS] at 150°C with filter paper. The thickness of [Tri][MS] / non-woven composite film is 45 μm. [Tri][MS] loading was 75wt.%.

[0034] The cross-sectional view of the composite membrane of the membrane is shown in the appendix Figure 4 , the resulting MEA was assembled into a high-temperature fuel cell, and the battery performance was tested on a single-cell evaluation device. The catalyst Pt loading in the ele...

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Abstract

The present invention relates to a high-temperature proton exchange membrane fuel cell, and in particular to a preparation method of a triazole-based ionic crystal / polymer composite film. The method uses a high-temperature dipping method to immerse the triazole-based ionic crystal into a polymer substrate, so as to prepare a composite film. The prepared film has the advantages of high conductivity and low permeability. The composite film prepared by the present invention has potential application prospect in high-temperature exchange membrane fuel cell.

Description

technical field [0001] The invention relates to a method for preparing a triazole-based ion crystal / polymer composite membrane for a high-temperature proton exchange membrane fuel cell with no humidification in the intake air, in particular to a method for preparing a triazole-based ion crystal / polymer composite film by a high-temperature impregnation method A method for the preparation of composite membranes. Background technique [0002] Proton exchange membrane fuel cell (PEMFC) is a high-efficiency, clean, and environment-friendly power generation device. It is an ideal power source for electric vehicles. application prospects. However, the widely used The representative perfluorinated sulfonic acid membrane fuel cell, the proton conductivity of this type of proton exchange membrane is strongly related to the water content and temperature, which limits the operating temperature of the battery, usually lower than 80 ° C, making the fuel cell in In practical applicatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/16
CPCY02E60/10
Inventor 李晓锦郝金凯于书淳姜永燚邵志刚
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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