Ether-bond-free anion exchange membrane of polyaryl piperidine for fuel cell and preparation method of ether-bond-free anion exchange membrane

An anion-exchange membrane and polyarylpiperidine technology, applied in fuel cells, circuits, electrical components, etc., can solve the problems that limit the promotion and development of proton-exchange membrane fuel cells, and achieve the balance of alkali resistance and conductivity, Improve alkaline stability and improve alkali resistance

Pending Publication Date: 2021-05-11
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the research is concentrated in the field of proton exchange membrane fuel cells, but the promotion and development of proton exchange membrane fuel cells are greatly limited due to the need to use rare noble metals as catalysts.

Method used

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  • Ether-bond-free anion exchange membrane of polyaryl piperidine for fuel cell and preparation method of ether-bond-free anion exchange membrane
  • Ether-bond-free anion exchange membrane of polyaryl piperidine for fuel cell and preparation method of ether-bond-free anion exchange membrane
  • Ether-bond-free anion exchange membrane of polyaryl piperidine for fuel cell and preparation method of ether-bond-free anion exchange membrane

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Embodiment 1

[0023] Embodiment one, by Figure 1-3 Given, the present invention provides the anion-exchange membrane without ether bond of polyarylpiperidine for fuel cell, and this anion-exchange membrane is prepared according to the different molar ratios of grafted brominated n-butane and bromoethanol:

[0024] Wherein the molar ratio of grafted n-butane bromide to bromoethanol is: a:b, where a and b are even numbers of 2 to 8 and a+b=10;

[0025] Described, structural formula is as shown in formula I:

[0026] .

[0027] Example, by Figure 1-3 Given, the invention provides the preparation method of the polyarylpiperidine-free anion-exchange membrane of polyarylpiperidine for fuel cells, comprising the steps of:

[0028] Step 1: Add 0.02mol (3.084g) biphenyl, 0.024mol (2.715g) N-methyl-4-piperidone, and 6mL dichloromethane to a 100mL three-neck flask connected with mechanical stirring under ice-water bath conditions, and dissolve After mixing evenly, add 0.75mL trifluoroacetic ac...

Embodiment 2

[0032] Embodiment two, by Figure 1-3 Given, the present invention provides the anion-exchange membrane without ether bond of polyarylpiperidine for fuel cell, and this anion-exchange membrane is prepared according to the different molar ratios of grafted brominated n-butane and bromoethanol:

[0033] Wherein the molar ratio of grafted n-butane bromide to bromoethanol is: a:b, where a and b are even numbers of 2 to 8 and a+b=10;

[0034] Described, structural formula is as shown in formula I:

[0035] .

[0036] Example, by Figure 1-3 Given, the invention provides the preparation method of the polyarylpiperidine-free anion-exchange membrane of polyarylpiperidine for fuel cells, comprising the steps of:

[0037] Step 1: Add 0.02mol (3.084g) biphenyl, 0.024mol (2.715g) N-methyl-4-piperidone, 6mL dichloromethane to a 100mL three-necked flask connected with mechanical stirring under ice-water bath conditions, After dissolving and mixing evenly, add 0.063mol (0.75ml) trifluo...

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Abstract

The invention discloses an ether-bond-free anion exchange membrane of polyaryl piperidine for a fuel cell and a preparation method. The anion exchange membrane is prepared according to different molar ratios of grafted n-butyl bromide to bromoethanol, the molar ratio of grafted n-butyl bromide to bromoethanol is a: b, a and b are both even numbers of 2-8, and a + b = 10. A main chain of the anion exchange membrane is polybiphenyl piperidine without ether bonds, so that the alkaline stability is improved, the alkali resistance is improved, and meanwhile, the microphase separation structure of the anion exchange membrane is changed by grafting bromoethanol and bromo-n-butane with different proportions on the side chain, so that the problem of balance between the alkali resistance and conductivity of the anion exchange membrane is solved; experimental results show that the ion conductivity of the ether-bond-free anion exchange membrane of the polyaryl piperidine is 0.47 S/cm to 0.61 S/cm at the temperature of 80 DEG C, and the thickness of the anion exchange membrane is 22 microns to 26 microns.

Description

technical field [0001] The invention relates to macromolecule chemistry and anion-exchange membrane fuel cells, in particular to a polyaryl piperidine-free anion-exchange membrane for fuel cells and a preparation method thereof. Background technique [0002] In recent years, in order to pursue rapid economic development, people have overused fossil energy, causing energy depletion, environmental pollution and other problems. At this time, fuel cells, as a new type of renewable energy, have gradually entered the sight of researchers from various countries. At present, most of the researches are concentrated in the field of proton exchange membrane fuel cells, but the promotion and development of proton exchange membrane fuel cells are greatly limited because the catalysts need to use rare noble metals. In contrast, anion-exchange membrane fuel cells have the advantages of fast fuel oxidation rate, low liquid alcohol fuel permeability and the use of non-precious metal catalyst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/22C08G61/12C08L65/00H01M8/1023H01M8/1069H01M8/1072H01M8/1086
CPCC08J5/2256C08G61/122H01M8/1023H01M8/1069H01M8/1072H01M8/1086C08J2365/00C08G2261/124C08G2261/312C08G2261/3221C08G2261/72Y02E60/50
Inventor 王哲张弘宇杜鑫明
Owner CHANGCHUN UNIV OF TECH
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