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Quaternary ammonium and imidazole cross-linked anion exchange membrane for fuel cell and preparation method thereof

An anion exchange membrane, fuel cell technology, applied in fuel cells, circuits, electrical components, etc., can solve problems such as high price and restricting the promotion and development of proton exchange membrane fuel cells

Pending Publication Date: 2021-02-09
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, most of the research is concentrated in the field of proton exchange membrane fuel cells, but the promotion and development of proton exchange membrane fuel cells are greatly limited due to the need to use expensive metals as catalysts.

Method used

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  • Quaternary ammonium and imidazole cross-linked anion exchange membrane for fuel cell and preparation method thereof
  • Quaternary ammonium and imidazole cross-linked anion exchange membrane for fuel cell and preparation method thereof
  • Quaternary ammonium and imidazole cross-linked anion exchange membrane for fuel cell and preparation method thereof

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preparation example Construction

[0031] The present invention also provides a preparation method of a quaternary ammonium and imidazole cross-linked anion exchange membrane for a fuel cell, comprising the following steps:

[0032] Step 1: Dissolving the polymer in tetrachloroethane, adding benzoyl peroxide and N-bromosuccinimide in an 80-degree oil bath and stirring for 5 hours, discharging in alcohol to obtain a light yellow floc;

[0033] Step 2: dissolving the light yellow floc obtained in the first step in a solvent to obtain a clear orange solution;

[0034] Step 3: Add benzoyl peroxide, 1-vinylimidazole and 1-methylpyrrolidine to the solution obtained in step 2 and stir for 12 to 24 hours to obtain a dark yellow film-forming solution. The anion exchange membrane is grafted with imidazole groups Prepared with a different molar ratio from the quaternary ammonium group, the molar ratio of the grafted imidazole group to the quaternary ammonium group is: a:b (a, b are both integers from 1 to 9 and a+b=10); ...

Embodiment 1

[0039] (1) Dissolve the polymer in tetrachloroethane, add benzoyl peroxide and N-bromosuccinimide and stir in an 80-degree oil bath for 5 hours, discharge in alcohol, and obtain a light yellow floc;

[0040] (2) Dissolving the light yellow floc obtained in step (1) in a solvent to obtain a clear orange solution;

[0041] (3) Add the solution obtained in step (2) to benzoyl peroxide, 1-vinylimidazole and 1-methylpyrrolidine (the molar ratio of 1-vinylimidazole to 1-methylpyrrolidine is 5:5) and stir After 12 to 24 hours, dark yellow film-forming liquid is obtained. The anion exchange membrane is prepared according to different molar ratios of grafted imidazole groups and quaternary ammonium groups. The molar ratio of grafted imidazole groups to quaternary ammonium groups is: a:b(a , b are integers from 1 to 9 and a+b=10);

[0042] (4) Cast the dark yellow film-forming solution obtained in step (3) on a glass plate to form a film, then put it in a constant temperature box, dry ...

Embodiment 2

[0045](1) Dissolve the polymer in tetrachloroethane, add benzoyl peroxide and N-bromosuccinimide and stir in an 80-degree oil bath for 5 hours, discharge in alcohol, and obtain a light yellow floc;

[0046] (2) Dissolving the light yellow floc obtained in step (1) in a solvent to obtain a clear orange solution;

[0047] (3) Add the solution obtained in step (2) to benzoyl peroxide, 1-vinylimidazole and 1-methylpyrrolidine (the molar ratio of 1-vinylimidazole to 1-methylpyrrolidine is 4:6) and stir After 12 to 24 hours, dark yellow film-forming liquid is obtained. The anion exchange membrane is prepared according to different molar ratios of grafted imidazole groups and quaternary ammonium groups. The molar ratio of grafted imidazole groups to quaternary ammonium groups is: a:b(a , b are integers from 1 to 9 and a+b=10);

[0048] (4) Cast the dark yellow film-forming solution obtained in step (3) on a glass plate to form a film, then put it in a constant temperature box, dry a...

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Abstract

The invention provides a quaternary ammonium and imidazole cross-linked anion exchange membrane for a fuel cell and a preparation method thereof, and belongs to the field of polymer chemistry and anion exchange membrane fuel cells. According to the anion exchange membrane, the molar ratio of a grafted imidazole group to a quaternary ammonium group is different, and the molar ratio of the imidazolegroup to the quaternary ammonium group is a: b (a and b are both integers of 1-9 and a+b is equal to 10). The invention also provides a preparation method of the quaternary ammonium and imidazole cross-linked anion exchange membrane. The method comprises the following steps: performing polymerizing by utilizing nucleophilic polycondensation reaction, and grafting the imidazole group and the quaternary ammonium group to prepare the quaternary ammonium and imidazole cross-linked anion exchange membrane. The highest ionic conductivity of the quaternary ammonium and imidazole cross-linked anion exchange membrane at 80 DEG C can reach 0.115 S / cm.

Description

technical field [0001] The invention belongs to the fields of polymer chemistry and anion-exchange membrane fuel cells, and in particular relates to a quaternary ammonium and imidazole cross-linked anion-exchange membrane for fuel cells and a preparation method thereof. Background technique [0002] In recent years, in order to pursue rapid economic development, people have overused fossil energy, causing energy depletion, environmental pollution and other problems. At this time, fuel cells, as a new type of renewable energy, have gradually entered the sight of researchers from various countries. At present, most of the researches are concentrated in the field of proton exchange membrane fuel cells, but the promotion and development of proton exchange membrane fuel cells is greatly limited because the catalyst needs to use expensive metals. In contrast, anion-exchange membrane fuel cells have the advantages of fast fuel oxidation rate, low liquid alcohol fuel permeability an...

Claims

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Application Information

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IPC IPC(8): H01M8/1018H01M8/1027H01M8/1069H01M8/1081
CPCH01M8/1018H01M8/1027H01M8/1069H01M8/1081Y02E60/50
Inventor 倪宏哲杨凯徐晶美王哲迟晓雨陈文波
Owner CHANGCHUN UNIV OF TECH
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