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Piperidine type anion exchange membrane with excellent comprehensive performance and preparation method of piperidine type anion exchange membrane

An anion-exchange membrane and comprehensive performance technology, which is applied in the field of piperidine-type anion-exchange membrane and its preparation, can solve the problems of low conductivity and achieve the effects of good repeatability, high ion conductivity, and high alkali resistance stability

Pending Publication Date: 2022-08-05
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, the present invention provides a piperidine-type anion-exchange membrane with excellent comprehensive performance and its preparation method to solve the problem of the conductivity of the block-type anion-exchange membrane used in fuel cells in the prior art when water swelling is very low. Very low rate of technical issues

Method used

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  • Piperidine type anion exchange membrane with excellent comprehensive performance and preparation method of piperidine type anion exchange membrane
  • Piperidine type anion exchange membrane with excellent comprehensive performance and preparation method of piperidine type anion exchange membrane
  • Piperidine type anion exchange membrane with excellent comprehensive performance and preparation method of piperidine type anion exchange membrane

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preparation example Construction

[0037] The preparation method of the piperidine type anion exchange membrane with excellent comprehensive performance provided by the present invention comprises the following steps:

[0038] Step 1), in a closed reaction vessel, dissolve 2-bromoethyl acrylate in an organic solvent, add 2-(butyl trithiocarbonate) propionic acid and a photocatalyst, and recycle for multiple freezes. - vacuumize - thaw - argon flow treatment, then use blue light irradiation to carry out the first stage photopolymerization under argon atmosphere, and the photopolymerization time is 0.5-1h to obtain the first reaction solution;

[0039] Step 2), in a closed reaction vessel, add styrene compound, organic solvent and photocatalyst to the first reaction solution obtained in step 1), and recycle to carry out multiple times of freezing-evacuating-thawing-argon-passing. treatment, and then use visible light to carry out the second photopolymerization in an argon atmosphere, and the photopolymerization t...

Embodiment 1

[0053] The preparation method of the piperidine-type anion exchange membrane with excellent comprehensive performance provided by this embodiment, the specific steps are as follows:

[0054] 1.1 Synthesis of the first reaction solution

[0055] Weigh 5mg (0.02mmol) of chain transfer reagent 2-(butyltrithiocarbonate)propionic acid (BTPA) into a 25mL Xinweier reaction tube, and then accurately measure 0.5mL (4.1mmol) with a pipette 2-Bromoethyl acrylate (BrEMA), 0.010ml (1.34g / ml, 2*10 -5 ) photocatalyst tris(phenylpyridine) iridium complex (Ir(ppy) 3 ), 0.5mL of dimethyl sulfoxide (DMSO) was placed in the Xinweier reaction tube, and the process of freezing-evacuating-thawing-argon was circulated three times to remove the air in the reaction tube, and then keep argon The first stage of photopolymerization was carried out in a gas atmosphere; the Xinweier reaction tube was irradiated under the blue LEDs lamp for 1h at room temperature, the power was 36Watts, the maximum inciden...

Embodiment 2

[0071] The preparation method and performance test of the piperidine-type anion exchange membrane in this example are the same as those in Example 1, the difference lies in the ratio n of the bromine atom in 2-bromoethyl acrylate to N-methylpiperidine in this example Br : n Pip It is 1:1.6, which makes the functionalization degree of the piperidine functionalization reaction of the two examples different. This example finally produces a piperidine-type anion exchange membrane with an IEC of 1.32 mmol / g.

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Abstract

The invention relates to a piperidine anion exchange membrane with excellent comprehensive performance and a preparation method thereof, and the preparation method comprises the following steps: dissolving 2-bromoethyl acrylate in an organic solvent, adding 2-(butyl trithiocarbonate) propionic acid and a photocatalyst, and carrying out a photopolymerization reaction in an argon atmosphere to obtain a first reaction solution; adding a styrene compound, an organic solvent and a photocatalyst into the first reaction solution, and carrying out photopolymerization reaction in an argon atmosphere to obtain a second reaction solution; precipitating the second reaction solution in ethanol, and purifying for multiple times to obtain a block polymer; dissolving the block polymer in an organic solvent, then adding N-methylpiperidine, and carrying out piperidine functionalization reaction in an oil bath pan to obtain a third reaction solution; and coating a substrate with the third reaction liquid, and drying to obtain the piperidine anion exchange membrane. The piperidine type anion exchange membrane disclosed by the invention obtains relatively high ion transmission efficiency under the condition of relatively low ion exchange capacity, and realizes high ion conductivity under the condition of low water content.

Description

technical field [0001] The invention relates to the field of fuel cell membrane materials, in particular to a piperidine-type anion exchange membrane with excellent comprehensive performance and a preparation method thereof. Background technique [0002] Anion exchange membrane fuel cells have attracted much attention due to their ability to combine the advantages of proton exchange membrane fuel cells and conventional alkaline fuel cells. Anion exchange membrane fuel cells can also potentially address many of the shortcomings of proton exchange membrane fuel cells, such as catalyst cost, reduction reaction kinetics, and fuel permeation. As one of the key components of anion exchange membrane fuel cells, the performance of anion exchange membrane directly affects the service life and final performance of the cell. The mutual restraint effect between ionic conductivity and water swelling and chemical stability are the two main properties of anion exchange membranes. [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/22C08F293/00C08F8/30C08F2/48H01M8/1081H01M8/1039C08L53/00
CPCC08J5/225C08F293/005C08F2/48C08F8/30H01M8/1081H01M8/1039C08F2438/03C08J2355/00Y02P70/50
Inventor 钱家盛段小琴葛倩倩朱祥李格格
Owner ANHUI UNIVERSITY
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