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Multi-fiber doped sulfonated polyphenyl ether proton exchange membrane and preparation method thereof

A technology of sulfonated polyphenylene ether and proton exchange membrane, which is applied in the field of exchange membrane, can solve the problems of mechanical performance to be improved and high price, and achieve the effect of improving surface activity, improving mechanical performance and reducing production cost

Inactive Publication Date: 2021-07-09
吴丹
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current proton exchange membranes are mainly Nafion series membranes produced by DuPont, which are expensive and their mechanical properties need to be improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The multi-fiber doped sulfonated polyphenylene ether proton exchange membrane is composed of the following raw materials in parts by weight:

[0021] Trifluoroethyl methacrylate 36, phosphocellulose 3, sulfonated polyphenylene ether 100, carbon nanotube 5, diethylenetriamine 2, 1,2-dimethylimidazole 0.7, tetradecanedioic acid 4, Calcium acetylacetonate 1, initiator 1, methyl nylonate 30, ethyl cellulose 10.

[0022] The initiator is dicumyl peroxide.

[0023] A preparation method of multi-fiber doped sulfonated polyphenylene ether proton exchange membrane, comprising the following steps:

[0024] (1) Get initiator, join in the acetone of its weight 17-20 times, stir, obtain initiator solution;

[0025] (2) Mix ethyl cellulose and cellulose phosphate, add them to methyl nylonate, stir evenly, add 1,2-dimethylimidazole, raise the temperature to 50°C, and keep stirring for 10 minutes to obtain fiber dispersion liquid;

[0026] (3) Take carbon nanotubes, add them to a n...

Embodiment 2

[0032] The multi-fiber doped sulfonated polyphenylene ether proton exchange membrane is composed of the following raw materials in parts by weight:

[0033] Trifluoroethyl methacrylate 40, cellulose phosphate 5, sulfonated polyphenylene ether 130, carbon nanotube 7, diethylenetriamine 4, 1,2-dimethylimidazole 1, tetradecanedioic acid 6, Calcium acetylacetonate 1, initiator 2, methyl nylonate 40, ethyl cellulose 17.

[0034] The initiator is dicumyl peroxide.

[0035] A preparation method of multi-fiber doped sulfonated polyphenylene ether proton exchange membrane, comprising the following steps:

[0036] (1) Get initiator, join in the acetone of its weight 20 times, stir, obtain initiator solution;

[0037] (2) Mix ethyl cellulose and cellulose phosphate, add them to methyl nylonate, stir evenly, add 1,2-dimethylimidazole, raise the temperature to 55°C, keep stirring for 20 minutes, and obtain fiber dispersion liquid;

[0038] (3) Take carbon nanotubes, add them into a nit...

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PUM

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Abstract

The invention discloses a multi-fiber doped sulfonated polyphenyl ether proton exchange membrane. The proton exchange membrane is prepared from the following raw materials in parts by weight: 36 to 40 parts of trifluoroethyl methacrylate, 3 to 5 parts of cellulose phosphate, 100 to 130 parts of sulfonated polyphenyl ether, 5 to 7 parts of carbon nanotube, 2 to 4 parts of diethylenetriamine, 0.7 to 1 part of 1, 2-dimethylimidazole, 4 to 6 parts of tetradecanedioic acid, 1 to 2 parts of calcium acetylacetonate, 1 to 2 parts of initiator, 30 to 40 parts of nylon acid methyl ester and 10 to 17 parts of ethyl cellulose. The exchange membrane disclosed by the invention is compounded by multiple fibers, so the mechanical property is effectively improved, and the production cost is reduced.

Description

technical field [0001] The invention belongs to the field of exchange membranes, in particular to a multi-fiber doped sulfonated polyphenylene ether proton exchange membrane and a preparation method thereof. Background technique [0002] The proton exchange membrane is a solid electrolyte membrane made of polymers containing acidic groups (such as sulfonic acid, phosphoric acid, and carboxylic acid groups, etc., mainly sulfonic acid groups), which separate fuel and The role of oxidizing agents, conducting protons and insulating electrons. An ideal proton exchange membrane should usually meet the following conditions: ①Good proton conductivity to reduce the internal resistance of the battery and increase the current density; ②Low fuel permeability, which can effectively block fuel and oxidant and avoid direct reaction between the two on the electrode surface. Cause local overheating of the battery and affect the Coulombic efficiency of the battery; ③Good chemical and electro...

Claims

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Application Information

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IPC IPC(8): H01M8/1025H01M8/1069C08F120/22C08J5/22C08L71/12C08L33/16C08K9/02C08K9/04C08K3/04
CPCH01M8/1025H01M8/1069C08F120/22C08J5/2256C08J5/2237C08J2371/12C08J2433/16C08K9/02C08K9/04C08K3/041Y02P70/50Y02E60/50
Inventor 吴丹尹赞
Owner 吴丹