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Novel polymer proton exchange membrane and preparation method thereof

A proton and exchange membrane technology, which is applied in the field of proton exchange membrane preparation for new direct methanol fuel cells, can solve the problems of cumbersome synthesis process conditions of cross-linking agents, and achieve good proton conductivity, thermal stability and tensile strength improvement , the effect of improving the service life

Active Publication Date: 2014-12-31
四川天策聚材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After cross-linking, the alcohol resistance and dimensional stability of SPEEK are improved, and there is no two-phase separation phenomenon, but the synthesis process conditions of the cross-linking agent are cumbersome and involve post-treatment of a large amount of organic solvents

Method used

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  • Novel polymer proton exchange membrane and preparation method thereof
  • Novel polymer proton exchange membrane and preparation method thereof
  • Novel polymer proton exchange membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Dissolve 100 parts of sulfonated polyether ether ketone with a sulfonation degree of 80% in 100 parts of N,N-dimethylacetamide, after the sulfonated polyether ether ketone is completely dissolved, add 5 parts of styrene and 1 part of di Vinylbenzene, with a stirring speed of 150rpm, to mix the reaction liquid evenly; after the temperature is raised to 65°C, and the temperature is constant, dissolve 0.5 parts of azobisethylheptanonitrile in 10 parts of N,N-dimethylacetamide, and add In the reaction solution, continue to react at a constant temperature and a constant speed for 5 hours; after the reaction is completed, lower the temperature, pour the reaction solution into a mold, and remove the solvent to obtain a sulfonated polyether ether ketone / polystyrene-divinylbenzene polymer with a semi-interpenetrating network structure Substance exchange membrane. The semi-interpenetrating network polymer proton exchange membrane has good proton conductivity, and at the same time...

Embodiment 2

[0041] Dissolve 100 parts of sulfonated polyether ether ketone with a sulfonation degree of 55% in 300 parts of N-methylpyrrolidone. After the sulfonated polyether ether ketone is completely dissolved, add 15 parts of styrene and 10 parts of divinylbenzene, Mix the reaction solution evenly at a stirring speed of 700rpm; heat up to 85°C, and after the temperature is constant, dissolve 1 part of benzoyl peroxide in 15 parts of N-methylpyrrolidone, and add it dropwise to the reaction solution within 0.5 hours . After adding the initiator solution dropwise, continue to react at constant temperature and speed for 5 hours, then lower the temperature, pour the reaction solution into a mold, and remove the solvent to obtain sulfonated polyetheretherketone / polystyrene-divinylbenzene with a semi-interpenetrating network structure. Polymer proton exchange membrane. The semi-interpenetrating network polymer proton exchange membrane has good proton conductivity, and at the same time, comp...

Embodiment 3

[0043] Dissolve 100 parts of sulfonated polyether ether ketone with a sulfonation degree of 30% in 500 parts of dimethyl sulfoxide, and after the sulfonated polyether ether ketone is completely dissolved, add 20 parts of styrene and 2 parts of divinylbenzene, Mix the reaction solution evenly at a stirring speed of 400rpm; raise the temperature to 80°C, and after the temperature is constant, dissolve 2 parts of dimethyl azobisisobutyrate in 20 parts of dimethyl sulfoxide, and add dropwise within 0.5h into the reaction solution. After adding the initiator solution dropwise, continue the constant temperature and constant speed reaction for 2 hours, then lower the temperature, pour the reaction solution into a mold, and remove the solvent to obtain sulfonated polyetheretherketone / polystyrene-divinylbenzene with a semi-interpenetrating network structure. Polymer proton exchange membrane. The semi-interpenetrating network polymer proton exchange membrane has good proton conductivit...

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Abstract

The invention discloses a semi-interpenetrating network sulfonated polyether ether ketone / polystyrene-divinylbenzene proton exchange membrane and a preparation method thereof. The proton exchange membrane is formed by 100 parts of sulfonated polyether ether ketone and 6-60 parts of styrene-divinylbenzene cross-linked polymer, wherein the sulfonation degree of the sulfonated polyether ether ketone is 30-95 percent, and the sulfonated polyether ether ketone has favorable proton conduction capacity; and the styrene-divinylbenzene cross-linked polymer forms cross-linked network type structure. The invention also discloses the preparation method of the proton exchange membrane. Due to the existence of the cross-linked network type structure in the proton exchange membrane, the dimensional stability, the hydrolytic resistance, the methanol resistance and the like of the proton exchange membrane can be greatly improved. The in situ polymerization semi-interpenetrating network structure proton exchange membrane has excellent hydrolytic resistance, methanol resistance, mechanical property and thermal stability performance, and has favorable application prospect in direct-methanol fuel cells.

Description

technical field [0001] The invention relates to a novel sulfonated polyether ether ketone / polystyrene-divinylbenzene polymer proton exchange membrane with a semi-interpenetrating network structure and a preparation method thereof, and belongs to the field of preparation of proton exchange membranes for novel direct methanol fuel cells. Background technique [0002] Direct methanol fuel cell (DMFC) is an electrochemical device that directly converts the chemical energy in methanol and oxidant into electrical energy. It has high energy conversion efficiency, environmental friendliness, high specific energy (compared to batteries), With the characteristics of low operating temperature and fast start-up, it can be widely used in automobiles, power stations, mobile power supplies and other fields. The polymer electrolyte membrane is the core component of DMFC, which plays the role of separating fuel and oxidant, conducting ions and insulating electrons, and has always been a hot ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L71/08C08L25/08C08F212/08C08F212/36H01M8/10
CPCY02E60/523Y02E60/522Y02E60/50
Inventor 李云涛赵春霞王立彬
Owner 四川天策聚材科技有限公司
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