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Preparation method of anion exchange membrane capable of introducing surfactant molecules to be used as cationic sites

An anion exchange membrane and surfactant technology, which is applied in the field of anion exchange membranes for fuel cells to achieve the effects of improving mechanical properties, increasing electrical conductivity and reducing swelling degree

Inactive Publication Date: 2016-03-09
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has not been reported that it is used as a membrane material in the field of fuel cells.

Method used

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  • Preparation method of anion exchange membrane capable of introducing surfactant molecules to be used as cationic sites
  • Preparation method of anion exchange membrane capable of introducing surfactant molecules to be used as cationic sites
  • Preparation method of anion exchange membrane capable of introducing surfactant molecules to be used as cationic sites

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Experimental program
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Effect test

Embodiment 1

[0021] (1) Weigh 4g of quaternized chitosan (QCS) with a molar ratio of quaternized ammonium substitution of 23.50%, add it to a three-necked flask containing 20mL of 2% (v / v) acetic acid solution, stir until completely dissolved, Add G with a purity of 50% 16-2-16 Molecule 2g, dissolved with 10mL 2% (v / v) acetic acid solution and added to the three-necked flask. Add the initiator KPS of 0.025g at 80 o Under the condition of C, reflux reaction for 6h, in which the initiator KPS was added three times at intervals of 1.5h, after cooling to room temperature, 2ml of glutaraldehyde solution was added, after vigorous stirring for 20min, ultrasonic oscillation for 20min, and then cast on a horizontal glass plate cast film.

[0022] (2) Immerse the membrane in 100mL deionized water, change the water every 20min, soak for 3 hours, wipe off the deionized water on the surface of the composite membrane, and place it at room temperature for 48h, slowly evaporate the water in the composit...

Embodiment 2

[0025] (1) Weigh 4g of quaternized chitosan (QCS) with a molar ratio of quaternized ammonium substitution of 23.50%, add it to a three-necked flask containing 20mL of 2% (v / v) acetic acid solution, stir until completely dissolved, Add G with a purity of 50% 12-2-12 Molecule 2g, dissolved with 10mL 2% (v / v) acetic acid solution and added to the three-necked flask. Add the initiator KPS of 0.025g at 80 o Under the condition of C, reflux reaction for 6h, in which the initiator KPS was added three times at intervals of 1.5h, after cooling to room temperature, 2ml of glutaraldehyde solution was added, after vigorous stirring for 20min, ultrasonic oscillation for 20min, and then cast on a horizontal glass plate cast film.

[0026] (2) Immerse the membrane in 100mL deionized water, change the water every 20min, soak for 3 hours, wipe off the deionized water on the surface of the composite membrane, and place it at room temperature for 48h, slowly evaporate the water in the composit...

Embodiment 3

[0029] (1) Weigh 4g of quaternized chitosan (QCS) with a molar ratio of quaternized ammonium substitution of 23.50%, add it to a three-necked flask containing 20mL of 2% (v / v) acetic acid solution, stir until completely dissolved, Adding G with a purity of 33% 8-2-8 Molecule 3.03g, dissolved with 10mL 2% (v / v) acetic acid solution and added to the three-necked flask. Add the initiator KPS of 0.025g at 80 o Under the condition of C, reflux reaction for 6h, in which the initiator KPS was added three times at intervals of 1.5h, after cooling to room temperature, 2ml of glutaraldehyde solution was added, after vigorous stirring for 20min, ultrasonic oscillation for 20min, and then cast on a horizontal glass plate cast film.

[0030] (2) Immerse the membrane in 100mL deionized water, change the water every 20min, soak for 3 hours, wipe off the deionized water on the surface of the composite membrane, and place it at room temperature for 48h, slowly evaporate the water in the comp...

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Abstract

The present invention provides a preparation method of an anion exchange membrane capable of introducing surfactant molecules to be used as cationic sites, and belongs to the technical field of fuel cells. The method comprises the following steps: using quaternized chitosan as a main membrane raw material and acetic acid solution as a solvent, introducing conductive materials Gemini molecules (G16-2-16, G12-2-12, G8-2-8) of three different molecular structures into a membrane structure, initiating polymerization to form a high polymer long chain by an initiator KPS, and adding a crosslinking agent GA to crosslink the membrane into a mesh structure; and casting the membrane on a glass plate by using a tape casting method, and penetrating the dried membrane into a potassium hydroxide solution to prepare a hydroxyl ion type compound membrane. The anion exchange membrane prepared by the preparation method has higher electrical conductivity and a lower swelling degree. According to the preparation method, the problems of a pure QCS anion membrane such as low electrical conductivity and high degree of swelling are solved.

Description

technical field [0001] The invention belongs to the technical field of anion exchange membranes for fuel cells, and in particular relates to a preparation method of anion exchange membranes that introduce Gemini surfactant molecules as cationic sites. Background technique [0002] Alkaline polymer electrolyte fuel cell (APEFC) is a new type of polymer electrolyte fuel cell (PEFC) that has emerged in recent years. It is expected to combine the advantages of PEFC and traditional alkaline fuel cell (AFC) and get rid of precious metal catalysts fundamentally. dependency. However, the anion exchange membranes that have been reported have disadvantages such as complex process, grafting rate of specific functional groups, difficulty in controlling grafting sites, and inaccurate prediction of ion exchange capacity. Up to now, no anion exchange membrane can be truly commercialized. Therefore, the development of high-performance alkaline polymer electrolyte (APE) is the primary task...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/22C08J3/24C08J7/12C08J7/00C08L5/08H01M8/02
CPCY02E60/50Y02P70/50
Inventor 王璐璐张帆王吉林
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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