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Alkaline anionic membrane and preparation method thereof

An alkaline anion and film-forming technology, applied in the field of alkaline anion membrane and its preparation, can solve the problems of poor stability and brittleness, and achieve the effects of high mechanical strength, good toughness and good battery performance

Inactive Publication Date: 2011-06-22
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that non-fluorine polymers tend to have poor stability and become brittle under high temperature or alkaline conditions.

Method used

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  • Alkaline anionic membrane and preparation method thereof
  • Alkaline anionic membrane and preparation method thereof
  • Alkaline anionic membrane and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Add 1 weight unit of polyvinylidene fluoride (PVDF), 0.04 weight units of cuprous chloride, and 0.154 weight units of 4,4-bipyridine into the reaction vessel, vacuumize and fill with nitrogen for 5 times, and add 20 After dissolving N-methylpyrrolidone (NMP) in units of weight, add 1 weight unit of styrene, mix for 10 minutes, and react at 120°C for 24 hours, 48 ​​hours, and 72 hours; pour the above mixture into ethanol to make The product precipitated out, was washed repeatedly with ethanol and deionized water, and dried in vacuo. The product was dissolved in N-methylpyrrolidone (NMP) under a nitrogen atmosphere, and 0.05 weight units of tin tetrachloride and 1 weight unit of chloromethyl ethyl ether were added. React at 50°C for 2 hours. Pour the product into ethanol, filter it with suction, wash it repeatedly with toluene and deionized water, and dry it in vacuum. The next step is to dissolve the product into N,N-dimethylformamide (DMF) and form a film at 60°C by c...

Embodiment 2

[0037] Add 1 weight unit of polyvinylidene fluoride (PVDF), 0.02 weight unit of cuprous chloride, and 0.077 weight unit of 4,4-bipyridine into the reaction vessel, vacuumize and inflate nitrogen for 5 times, and add 20 After dissolving N-methylpyrrolidone (NMP) in units of weight, add 1 weight unit of styrene, mix for 10 minutes, and react at 120°C for 24 hours, 48 ​​hours, and 72 hours; pour the above mixture into ethanol to make The product precipitated out, was washed repeatedly with ethanol and deionized water, and dried in vacuo. The product was dissolved in N-methylpyrrolidone (NMP) under a nitrogen atmosphere, and 0.05 weight units of tin tetrachloride and 1 weight unit of chloromethyl ethyl ether were added. React at 50°C for 2 hours. Pour the product into ethanol, filter it with suction, wash it repeatedly with ethanol and toluene, and dry it in vacuum. The next step is to dissolve the product into N,N-dimethylformamide (DMF) and form a film at 60°C by casting metho...

Embodiment 3

[0040]Add the polyvinylidene fluoride (PVDF) of 1 weight unit, the cuprous chloride of 0.02 weight unit, the pentamethyldiethylenetriamine (PMDETA) of 0.05 weight unit in the reaction container, vacuumize and inflate nitrogen repeatedly 5 times, use Add 20 weight units of N-methylpyrrolidone (NMP) into the syringe. After dissolving, add 1 weight unit of styrene, mix for 10 minutes, and react at 120°C for 24 hours, 48 ​​hours, and 72 hours; pour the above mixture into The product was precipitated from ethanol, washed repeatedly with ethanol and toluene, and dried in vacuo. The product was dissolved in N-methylpyrrolidone (NMP) under a nitrogen atmosphere, and 0.05 weight units of tin tetrachloride and 1 weight unit of chloromethyl ethyl ether were added. React at 50°C for 2 hours. The product was poured into ethanol, filtered with suction, washed repeatedly with ethanol and deionized water, and dried in vacuum. The next step is to dissolve the product into N,N-dimethylformami...

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Abstract

The invention relates to an alkaline anionic exchange membrane, in particular to an alkaline anionic membrane and a preparation method thereof. The structural formula of the membrane is shown in the specification, wherein m=1-1000, n=1-10000 and h=1000-20000. The membrane prepared by the invention is better in heat stability, alkali resistance and battery performance.

Description

technical field [0001] The invention relates to a basic anion exchange membrane, in particular to a basic anion membrane and a preparation method thereof. Background technique [0002] Alkaline anion exchange membrane (AAEM) is a key material for alkaline anion fuel cells. Alkaline anion fuel cells are a class of fuel cells that are gaining more and more attention. In the alkaline anion membrane fuel cell system, not only non-platinum catalysts such as nickel (Ni), cobalt (Co), etc. can be used, which greatly reduces the cost of fuel cells. and can avoid CO 2 Poisoning problem. [0003] At present, the preparation of anion exchange membranes is mainly divided into two types: 1. Radiation-grafted fluorine polymers such as: PVDF, ETFE, PTFE, etc. John R.Varcoe et al. used electron beams to irradiate ETFE grafted with chloromethylstyrene, followed by quaternization to prepare anionic membranes, and the conductivity can reach 0.03mScm -1 . However, the disadvantage of this...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/32H01M4/94H01M8/02H01M8/10H01M8/103
CPCY02E60/523Y02E60/522Y02E60/50
Inventor 曲超张华民张凤祥
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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