Preparation method and application of conjugated organic framework/perfluorinated sulfonic acid resin composite proton exchange membrane

A perfluorosulfonic acid resin and proton exchange membrane technology, which is applied to fuel cell components, fuel cells, electrochemical generators, etc., can solve the problems of low proton conductivity and mechanical properties of perfluorosulfonic acid proton exchange membranes , to achieve the effect of uniform COF/perfluorosulfonic acid composite membrane, low raw material price and reduced production cost

Active Publication Date: 2022-02-18
HARBIN INST OF TECH
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  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing a conjugated organic framework/perfluorosulfonic acid resin composite proton exchange membrane in orde

Method used

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  • Preparation method and application of conjugated organic framework/perfluorinated sulfonic acid resin composite proton exchange membrane
  • Preparation method and application of conjugated organic framework/perfluorinated sulfonic acid resin composite proton exchange membrane
  • Preparation method and application of conjugated organic framework/perfluorinated sulfonic acid resin composite proton exchange membrane

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Embodiment 1

[0036] Embodiment 1: The preparation method of a conjugated organic framework / perfluorosulfonic acid resin composite proton exchange membrane of this embodiment is carried out according to the following steps:

[0037] Step 1: Dissolve 7g of hexachlorocyclotrimeric phosphazene and 10.5g of melamine in 120mL of N,N-dimethylformamide, then add 32g of triethylamine and 0.19g of tetrabutylammonium bisulfate, and reflux at 80°C React for 70 hours, centrifuge after the reaction, wash with water, and vacuum dry at 80°C for 12 hours to obtain a conjugated organic framework material;

[0038] Step 2: ultrasonically disperse 2 g of the conjugated organic framework material obtained in step 1 in 133 mL of nitrogen-methylpyrrolidone to obtain a dispersion, add 20 g of perfluorosulfonic acid resin powder to the dispersion, and stir magnetically until a uniform emulsion is formed;

[0039] Step 3: Scrape-coat the emulsion obtained in step 2 on a glass plate, first air-dry at 80°C for 10 hou...

Embodiment 2

[0041] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the dosage of the conjugated organic framework material in step 2 is 1 g. All the other steps and parameters are the same as in Example 1.

Embodiment 3

[0042] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the dosage of the conjugated organic framework material in step 2 is 0.4 g. All the other steps and parameters are the same as in Example 1.

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Abstract

The invention relates to a preparation method and application of a conjugated organic framework/perfluorinated sulfonic acid resin composite proton exchange membrane, belonging to the field of proton exchange membrane fuel cells. The invention aims to solve the technical problems of low proton conductivity and low mechanical property of existing perfluorosulfonic acid proton exchange membranes. The preparation method comprises the following steps: 1, dissolving phosphonitrilic chloride trimer and melamine in an organic solvent, then adding triethylamine and tetrabutylammonium hydrogen sulfate, and carrying out a reflux reaction to obtain COF; step 2, ultrasonically dispersing COF in N-methyl pyrrolidone, and then adding perfluorinated sulfonic acid resin powder to obtain an emulsion; and 3, blade-coating a glass plate with the emulsion, and carrying out post-treatment to obtain the COF/perfluorinated sulfonic acid resin composite proton exchange membrane. The proton exchange membrane is used for preparing a fuel cell or a water electrolysis device. The method is simple and rapid in process and low in raw material price, the obtained composite membrane is uniform and good in interfacial compatibility, and the proton conductivity and the mechanical performance of the perfluorosulfonic acid proton exchange membrane can be improved at the same time.

Description

technical field [0001] The invention belongs to the field of proton exchange membrane fuel cells, and in particular relates to a preparation method and application of a conjugated organic framework / perfluorosulfonic acid resin composite proton exchange membrane. Background technique [0002] In the era of "carbon neutrality and carbon peaking", the development of new green and sustainable energy is imminent, and the research and development of hydrogen energy has been put on the national development agenda. Proton exchange membrane fuel cells (PEMFCs) have received great attention as efficient conversion devices for converting chemical energy into electrical energy. At present, commercial proton exchange membranes for fuel cells mainly include membrane materials produced by mainstream companies such as DuPont, Gore-select, and Asahi Glass in Japan. However, the high price of membrane materials produced by these enterprises has brought great difficulties to the development o...

Claims

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Application Information

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IPC IPC(8): C08J5/22C08L29/10C08L85/02C08G79/025H01M8/0289H01M8/0223
CPCC08J5/2237C08G79/025H01M8/0289H01M8/0223C08J2329/10C08J2485/02Y02E60/50
Inventor 何伟东董运发刘远鹏袁博韬韩杰才
Owner HARBIN INST OF TECH
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