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Preparation method of anion exchange membrane for alkaline fuel cell and anion exchange membrane

An anion exchange membrane and fuel cell technology, which is applied in fuel cells, circuits, electrical components, etc., can solve problems such as poor mechanical properties and low ion exchange capacity of anion exchange membranes

Active Publication Date: 2020-10-27
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These SEBS-based anion exchange membranes have low ion exchange capacity and poor mechanical properties.

Method used

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  • Preparation method of anion exchange membrane for alkaline fuel cell and anion exchange membrane
  • Preparation method of anion exchange membrane for alkaline fuel cell and anion exchange membrane
  • Preparation method of anion exchange membrane for alkaline fuel cell and anion exchange membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1 Preparation of chloromethylated SEBS

[0045] ① Weigh 5g of SEBS (number average molecular weight 130000, styrene content 58%) into a three-necked flask filled with 300mL chloroform (the three-necked flask is equipped with a condenser tube, a thermometer and a mechanical stirring rod), and mechanically stir for 2 hours. Allow SEBS to dissolve completely.

[0046] ②Put the three-neck flask in an ice-water bath to lower the SEBS solution to 0°C, add 4.6g of paraformaldehyde and 19.63mL of trimethylchlorosilane, stir mechanically for 30 minutes, then add 4.36g of SnCl4 dropwise in the ice-water bath, and dropwise Afterwards, react at room temperature for 18 h.

[0047] ③ Pour the reaction mixture in ② into absolute ethanol, and a white precipitate precipitates out. Filter the white precipitate, and dry the white precipitate in an oven at 60°C.

[0048] ④ Dissolve the white precipitate obtained in ③ in chloroform first, then precipitate and filter in ethanol,...

Embodiment 2

[0049] The preparation of embodiment 2 2wt.% CSEBS solution

[0050] The CSEBS prepared in Example 1 was added into chloroform, and mechanically stirred at room temperature for 6 h to obtain a 2 wt.% CSEBS solution.

Embodiment 3

[0051] The preparation of embodiment 3 2wt.% BPEI solution

[0052] BPEI (number-average molecular weight: 25,000) was added into chloroform and mechanically stirred at room temperature for 6 h to obtain a 2 wt.% BPEI solution.

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Abstract

The invention discloses a preparation method of an anion exchange membrane for an alkaline fuel cell and an anion cross-membrane, comprising the following steps: preparation of CSEBS solution and BPEI solution; preparation of CSEBS / BPEI film-forming solution; crosslinking of CSEBS membrane; main chain benzene ring Methylene chloride quaternization and BPEI quaternization; chloride ion conversion to OH ‑ . The anion exchange membrane with high ion exchange capacity for the alkaline fuel cell prepared by the invention has high ion exchange capacity and good mechanical properties.

Description

technical field [0001] The invention relates to a preparation method of an anion exchange membrane with high ion exchange capacity for alkaline fuel cells and an anion exchange membrane with high ion exchange capacity for alkaline fuel cells. Background technique [0002] With the continuous consumption of fossil fuels and the increase of environmental pollutants, more and more countries have begun to study clean new energy power systems such as wind energy, solar energy, and hydrogen energy. In today's clean energy, fuel cells play an indispensable role in green, economy, environmental protection and sustainability. Due to its rapid oxygen reduction ability and the advantages of not using noble metals as catalysts, anion exchange membrane fuel cells are currently the most widely studied energy conversion devices. In an anion exchange membrane fuel cell, the anion exchange membrane ( AEM) is one of the most important components and has been extensively studied. [0003] T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/22C08L53/02C08L79/08H01M8/083
CPCC08J5/2287C08J2353/02C08J2479/08H01M8/083Y02E60/50Y02P70/50
Inventor 范敏敏张明华肖亚飞董大伟杨召杰王克
Owner SICHUAN UNIV
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