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Preparation method of oligosiloxane composite proton exchange membrane containing azole ring

An oligosiloxane, proton exchange membrane technology, applied in fuel cells, electrochemical generators, electrical components, etc., can solve problems such as the decline of proton conductivity, achieve good compatibility, high proton conductivity, guarantee The effect of mechanical stability

Active Publication Date: 2020-11-10
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some inorganic substances can be simply functionalized. When they are doped into the polymer matrix, the inorganic fillers may be aggregated, resulting in phase separation of the composite membrane and a decrease in the proton conductivity.

Method used

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  • Preparation method of oligosiloxane composite proton exchange membrane containing azole ring
  • Preparation method of oligosiloxane composite proton exchange membrane containing azole ring
  • Preparation method of oligosiloxane composite proton exchange membrane containing azole ring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Add 3-amino-1,2,4-triazole (Atri) to isopropanol to disperse evenly at 25°C, then add glycidyl methacrylate (GMA), react for 24 hours, and pass The solvent was removed by evaporation to give glycidyl methacrylate-3-amino-1,2,4-triazole (GMA-Atri);

[0042] Wherein, the mass ratio of 3-amino-1,2,4-triazole (Atri) to glycidyl methacrylate (GMA) is 8:11; 34 grams of Atri are added per liter of isopropanol;

[0043] (2) Disperse GMA-Atri in deionized water at 70°C, add the initiator AIBN to start the reaction, add octavinyl octasilsesquioxane (OVPOSS) after 1 hour of reaction, and react for another 6 hours, and the obtained The product is precipitated in methanol, and then dried in a vacuum oven to obtain the desired oligosiloxane nanofiller PGA containing an azole ring;

[0044] Wherein, the mass ratio of GMA-Atri and OVPOSS is 90:1; The quality of adding initiator is 1% of the sum of monomer 3 and monomer 4 quality; Add 75 grams of GMA-Atri per liter of deionized wat...

Embodiment 2

[0067] Other steps are the same as in Example 1, except that Atri is replaced by Tri(1H-1,2,4-triazole). The obtained monomer 3 is GMA-Tri (glycidyl methacrylate-1H-1,2,4-triazole), and finally PGT (oligosiloxane organic-inorganic composite filler containing azole ring) is obtained. The performance of the obtained composite membrane is close to that of Example 1.

Embodiment 3

[0069] Other steps are the same as in Example 1, except that SPEEK is replaced by SPES (sulfonated polyarylethersulfone), and finally the composite membrane obtained is SPES / PGA-X. The performance of the obtained composite membrane is close to that of Example 1.

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Abstract

The invention relates to a preparation method of an oligosiloxane composite proton exchange membrane containing an azole ring. The method comprises the following steps: adding a first monomer to reactwith a second monomer to obtain a third monomer; under the action of an initiator, reacting the third monomer with a fourth monomer to obtain an oligosiloxane nano-filler PGA containing an azole ring; mixing the PGA with a matrix, casting the obtained mixed solution onto a glass plate, and drying to obtain a composite film (SPEEK / PGA-X). The high-performance and low-cost proton exchange membraneobtained by the invention can be widely applied to fuel cells, and has important significance and key effects on reducing the cost of the fuel cells, perfecting an upstream industrial chain of the fuel cells and promoting the development of the field of new energy.

Description

technical field [0001] The invention belongs to the field of preparation of nanocomposite membranes with high proton conductivity, and in particular relates to an azole-ring-containing oligosiloxane composite proton exchange membrane satisfying both high proton conductivity and excellent dimensional stability. Background technique [0002] Proton exchange membrane fuel cell is an environment-friendly energy device with high conversion efficiency and no pollution emission. As one of the core components of the fuel cell, the proton exchange membrane plays the dual role of separating fuel and oxidant and conducting protons. Its excellent comprehensive performance guarantees the long-term and efficient operation of the fuel cell. So far, the PEMs reported in the literature are mainly divided into four categories: (1) fluorine-containing exchange membranes, the representative products of which mainly include the Nafion series membranes of DuPont in the United States and Solvay me...

Claims

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Application Information

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IPC IPC(8): C08J5/22C08L61/16C08L81/06C08L51/08C08F283/12C08F220/36C07D249/14H01M8/1072H01M8/1037H01M8/1032
CPCC08J5/2256C08F283/124C07D249/14H01M8/1072H01M8/1037H01M8/1032C08J2361/16C08J2381/06C08J2451/08C08F220/36Y02E60/50
Inventor 丁会利刘晓阳冯怡任红倩杨梦洁夏明龙
Owner HEBEI UNIV OF TECH
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