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Inorganic-organic compound type proton exchange membrane for fuel cell and preparation method thereof

A proton exchange membrane and fuel cell technology, applied in fuel cells, circuits, electrical components, etc., can solve the problem of low proton conductivity of proton exchange membranes

Active Publication Date: 2016-12-21
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of low proton conductivity of existing proton exchange membranes, and provide an inorganic-organic composite proton exchange membrane for fuel cells and a preparation method thereof

Method used

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  • Inorganic-organic compound type proton exchange membrane for fuel cell and preparation method thereof
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  • Inorganic-organic compound type proton exchange membrane for fuel cell and preparation method thereof

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preparation example Construction

[0034] According to the present invention, the preparation method of the inorganic-organic salt PWA-IL preferably includes:

[0035] Inorganic organic salts were prepared by grinding phosphotungstic acid and 1-ethyl, 3-methylimidazolium bistrifluoromethylxanthimide ionic liquid as raw materials. The molar ratio of the phosphotungstic acid to 1-ethyl, 3-methylimidazolium bistrifluoromethylxanthimide ionic liquid is preferably 1:3. The reaction formula is as follows:

[0036]

[0037] According to the present invention, the preparation method of the sulfonated polyaryletherketone sulfone preferably includes:

[0038] Under the protection of nitrogen, add amol 4,4'-difluorobenzophenone, b mol 4,4'-sulfonated dichlorodiphenyl sulfone and (a+b)mol carboxyl-containing bisphenol monomer into the three-necked flask After mixing evenly, add salt-forming agent, water-carrying agent and solvent, reflux with water at 120-140°C for 4-5 hours, then release the water-carrying agent, rai...

Embodiment 1

[0054] a. Preparation of inorganic-organic salt

[0055] (1) Weigh 1.1216g of phosphotungstic acid on a balance, and add the weighed medicine into a clean mortar;

[0056] (2) Measure 300 μl of 1-ethyl, 3-methylimidazole bistrifluoromethylxanthamide ionic liquid with a pipette gun, and add the weighed medicine into the mortar;

[0057] (3), grind two kinds of medicines with mortar for 3 hours, obtain uniform viscous inorganic organic salt;

[0058] b, the preparation of sulfonated polyarylether ketone sulfone with a sulfonation degree of 20%

[0059] (1), a three-necked flask with a reflux device and a water separator is installed on the magnetic stirrer, and a mechanical stirrer is installed above the flask;

[0060] (2), under nitrogen protection, add 4.90g 4,4'-difluorobenzophenone, 1.22g 4,4'-sulfonated dichlorodiphenyl sulfone and 5.70g bisphenol A monomer to the flask respectively, 3g potassium carbonate, 20mL sulfolane solution and 15mL toluene solution;

[0061] (3...

Embodiment 2

[0073] a. Preparation of inorganic-organic salt

[0074] (1) Weigh 1.1216g of phosphotungstic acid on a balance, and add the weighed medicine into a clean mortar;

[0075] (2) Measure 300 μl of 1-ethyl, 3-methylimidazole bistrifluoromethylxanthamide ionic liquid with a pipette gun, and add the weighed medicine into the mortar;

[0076] (3), grind two kinds of medicines with mortar for 3 hours, obtain uniform viscous inorganic organic salt;

[0077] b, the preparation of sulfonated poly(aryl ether ketone sulfone) with a sulfonation degree of 40%

[0078] (1), a three-necked flask with a reflux device and a water separator is installed on the magnetic stirrer, and a mechanical stirrer is installed above the flask;

[0079] (2), under nitrogen protection, add 4.36g 4,4'-difluorobenzophenone, 2.45g 4,4'-sulfonated dichlorodiphenyl sulfone and 5.70g bisphenol A monomer to the flask respectively, 3g potassium carbonate, 20mL sulfolane solution and 15mL toluene solution;

[0080]...

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Abstract

The invention provides an inorganic-organic compound type proton exchange membrane for a fuel cell and a preparation method thereof, belonging to the field of high polymer chemistry and rate exchange membrane fuel cells, and solving the problem of low proton conduction efficiency of the existing proton exchange membrane. The proton exchange membrane comprises the following components by weight percent: 30% of inorganic-organic salt PWA-IL and 70% of sulfonated polyaryletherketone sulfone. The invention also provides a preparation method of the inorganic-organic compound type proton exchange membrane for the fuel cell. The proton conduction rate of the acid-base compound type proton exchange membrane is 0.06S / cm-0.12S / cm at 80 DEG C, the acid-base compound type proton exchange membrane has relatively high heat stability, and the thickness of the acid-base compound type proton exchange membrane is 60-80 microns.

Description

technical field [0001] The invention belongs to the fields of polymer chemistry and proton exchange membrane fuel cells, and in particular relates to an inorganic-organic composite proton exchange membrane for fuel cells and a preparation method thereof. Background technique [0002] The proton exchange membrane (PEM) is the core part of the proton exchange membrane fuel cell (PEMFC). During the operation, the proton exchange membrane plays the role of conducting proton generation and converting chemical energy into electrical energy. On the other hand, it can isolate fuel and oxidizing agents to prevent their direct reaction. The performance of the proton exchange membrane affects the performance of the proton exchange membrane fuel cell to a great extent. The most popular proton exchange membrane in the market is perfluorosulfonic acid type proton exchange membrane (such as Nafion). This type of sulfonic acid membrane has the advantages of good proton conductivity, high ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/1018H01M8/1041H01M8/1044H01M8/1069
CPCH01M8/1018H01M8/1041H01M8/1044H01M8/1069Y02E60/50
Inventor 王哲李金晟王双
Owner CHANGCHUN UNIV OF TECH