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Preparation method of cross-linked polyphenyl ether composite proton exchange membrane

The technology of proton exchange membrane and polyphenylene ether is applied in the field of preparation of cross-linked polyphenylene ether composite proton exchange membrane, which can solve the problems of low stability and high cost of proton exchange membrane, and achieve good stability and low cost of membrane production. , the effect of convenient operation

Inactive Publication Date: 2014-11-05
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of high cost and low stability of proton exchange membranes currently used in proton exchange membrane fuel cells, the present invention provides a preparation method of cross-linked polyphenylene ether composite proton exchange membranes

Method used

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  • Preparation method of cross-linked polyphenyl ether composite proton exchange membrane

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Effect test

Embodiment 1

[0021] A preparation method for a cross-linked polyphenylene ether composite proton exchange membrane, comprising the following steps:

[0022] A polyphenylene ether solution with a mass of 5 grams was dissolved in a chlorobenzene solution with a mass of 10 grams to obtain a polyphenylene ether solution;

[0023] Heat the polyphenylene ether solution to 90°C and stir for 1 hour;

[0024] Then add 0.5 g of brominating reagent to the above polyphenylene ether solution, and stir for 10 hours, then cool to room temperature and filter to obtain the filtrate, wash and dry the filtrate to obtain brominated polyphenylene ether. The bromination reagent is elemental bromine;

[0025] Soak brominated polyphenylene ether in a sodium hydroxide solution with a temperature of 80°C and a concentration of 2 mol / L for 20 hours to obtain hydroxylated brominated polyphenylene ether;

[0026] The hydroxylated brominated polyphenylene ether was dissolved in the chlorobenzene solution to obtain th...

Embodiment 2

[0032] A preparation method for a cross-linked polyphenylene ether composite proton exchange membrane, comprising the following steps:

[0033] A polyphenylene ether solution with a quality of 6 grams was dissolved in a chlorobenzene solution with a quality of 60 grams to obtain a polyphenylene ether solution;

[0034] Heat the polyphenylene ether solution to 110°C and stir for 3 hours;

[0035] Then add 1.5 grams of brominating reagent to the above polyphenylene ether solution, stir for 13 hours, then cool to room temperature and filter to obtain the filtrate, wash and dry the filtrate to obtain brominated polyphenylene ether. The bromination reagent is N-bromosuccinimide;

[0036] Soak brominated polyphenylene ether in a sodium hydroxide solution with a temperature of 82°C and a concentration of 2.4mol / L for 30 hours to obtain hydroxylated brominated polyphenylene ether;

[0037] The hydroxylated brominated polyphenylene ether is dissolved in the chlorobenzene solution to ...

Embodiment 3

[0043] A preparation method for a cross-linked polyphenylene ether composite proton exchange membrane, comprising the following steps:

[0044] A polyphenylene ether solution with a mass of 7 grams was dissolved in a chlorobenzene solution with a mass of 120 grams to obtain a polyphenylene ether solution;

[0045] Heat the polyphenylene ether solution to 130°C and stir for 5 hours;

[0046]Then add 2.5 grams of brominating reagent to the above polyphenylene ether solution, and stir for 16 hours, then cool to room temperature and filter to obtain the filtrate, wash and dry the filtrate to obtain brominated polyphenylene ether. The bromination reagent is elemental bromine;

[0047] Soak brominated polyphenylene ether in a sodium hydroxide solution with a temperature of 84°C and a concentration of 2.8 mol / L for 40 hours to obtain hydroxylated brominated polyphenylene ether;

[0048] The hydroxylated brominated polyphenylene ether is dissolved in the chlorobenzene solution to ob...

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Abstract

The invention relates to a preparation method of a proton exchange membrane used in fuel cells. The invention specifically relates to a preparation method of a cross-linked polyphenyl ether composite proton exchange membrane. According to the method, polyphenyl ether is dissolved in a chlorobenzene solution, such that a high-molecular solution is prepared; gamma-mercaptopropyl triethoxysilane or gamma-mercaptopropyl trimethoxysilane is added; the mixture is heated and stirred such that a solution is formed; the solution is cast on a glass plate and is dried and cross-linked, such that a membrane is formed; the cross-linked polyphenyl ether composite membrane is soaked and oxidized in a hydrogen peroxide solution under room temperature, such that the cross-linked polyphenyl ether composite proton exchange membrane is obtained. The composite proton exchange membrane provided by the invention has excellent proton conductivity, wherein the proton conduction rate is higher than that of a Nafion membrane. The membrane provided by the invention also has good stability. A swelling degree of the membrane provided by the invention is smaller than that of the Nafion membrane. The method provided by the invention also has the advantages of simple process and convenient operation. A membrane production cost is lower than that of the Nafion membrane. The method is suitable for industrialization.

Description

technical field [0001] The invention relates to a preparation method of a proton exchange membrane used in a fuel cell, in particular to a preparation method of a cross-linked polyphenylene ether composite proton exchange membrane. Background technique [0002] Proton exchange membrane fuel cells (PEMFC) directly convert fuel and oxidant (O 2 ) chemical energy into electrical energy, is a new type of power generation device, because of its high energy efficiency and pollution-free advantages, it is considered to be one of the most promising clean energy sources, and the proton exchange membrane fuel cell is small in size and light in weight It is light, safe and convenient to use, enough to replace the traditional rechargeable batteries used in portable electric devices, such as mobile phones, notebook computers, digital cameras, video cameras, rechargeable batteries on electric bicycles, and high-power proton exchange membrane fuel cells. Can be used in automobiles, proton...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/22C08J3/24C08G65/48H01M8/02H01M2/16H01M8/1025H01M8/1081
CPCY02P70/50Y02E60/50
Inventor 罗居杰宋艳慧卫爱丽解小玲
Owner TAIYUAN UNIV OF TECH
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