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Alkaline anion exchange membrane and production method thereof

A technology of alkaline anion and exchange membrane, which is applied in the direction of electrical components, circuits, battery components, etc., and can solve the problems of increasing the internal stress of the membrane, hindering the rotation of molecular chains, and making the dry film brittle

Inactive Publication Date: 2015-08-19
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the cross-linking density should not be too high, otherwise the stress inside the film will be increased, causing the rotation of molecular chains to be hindered, resulting in the dry film becoming brittle
Wang et al. used N-methylimidazole as an ionizing reagent and N,N-dimethylpiperazine as a cross-linking reagent to prepare a cross-linked basic anion-exchange membrane. The swelling degree and water absorption of the membrane were improved, but low conductivity

Method used

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  • Alkaline anion exchange membrane and production method thereof
  • Alkaline anion exchange membrane and production method thereof
  • Alkaline anion exchange membrane and production method thereof

Examples

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Embodiment example 1

[0034] The chloromethylation reaction of polysulfone: the bisphenol A polysulfone of 1 weight unit is dissolved in the chloroform under nitrogen atmosphere, adds the tin tetrachloride (SnCl 4 ) and 1.7 weight units of chloromethyl methyl ether (CMME) were reacted at 55° C. for 12 hours. The product was poured into ethanol, filtered with suction, washed repeatedly with ethanol and deionized water, and then dried under vacuum at 50°C for 12 hours. Add 1 weight unit of chloromethylated bisphenol A polysulfone, 0.05 weight unit of cuprous chloride (CuCl), and 0.15 weight unit of 4,4'-bipyridine (Bpy) into the reactor, vacuumize, Charge nitrogen, switch repeatedly 5 times to ensure that the reactor is an inert gas atmosphere, add 25 weight units of N-methylpyrrolidone (NMP) to the reactor with a syringe under a nitrogen atmosphere, after dissolving, add 1 weight unit of 3-chloro - 2-Methyl-1-propene (MAC), after mixing well, react at 80°C for 24 hours, 36 hours, 48 ​​hours; pour t...

Embodiment example 2

[0037] The chloromethylation reaction of polysulfone: the bisphenol A polysulfone of 1 weight unit is dissolved in the chloroform under nitrogen atmosphere, adds the tin tetrachloride (SnCl 4) and 1.7 weight units of chloromethyl methyl ether (CMME) were reacted at 55° C. for 12 hours. The product was poured into ethanol, filtered with suction, washed repeatedly with ethanol and deionized water, and then dried under vacuum at 50°C for 12 hours. Add 1 weight unit of chloromethylated bisphenol A polysulfone, 0.03 weight unit of cuprous chloride (CuCl), and 0.09 weight unit of 4,4'-bipyridine into the reactor, vacuumize and fill with nitrogen, Switch repeatedly 5 times to ensure that the reactor is an inert gas atmosphere, add 25 weight units of N-methylpyrrolidone (NMP) into the reactor with a syringe under a nitrogen atmosphere, and after dissolving, add 1 weight unit of 3-chloro-2- Methyl-1-propene, after fully mixed, reacted at 80°C for 24 hours, 36 hours, 48 ​​hours; pour t...

Embodiment example 3

[0040] The chloromethylation reaction of polysulfone: the bisphenol A polysulfone of 1 weight unit is dissolved in the chloroform under nitrogen atmosphere, adds the tin tetrachloride (SnCl 4 ) and 1.7 weight units of chloromethyl methyl ether (CMME) were reacted at 55° C. for 12 hours. The product was poured into ethanol, filtered with suction, washed repeatedly with ethanol and deionized water, and then dried under vacuum at 50°C for 12 hours. Add 1 weight unit of chloromethylated bisphenol A polysulfone, 0.02 weight unit of cuprous chloride (CuCl), and 0.06 weight unit of 4,4'-bipyridine (Bpy) into the reactor, vacuumize, Charge nitrogen, switch repeatedly 5 times to ensure that the reactor is an inert gas atmosphere, add 25 weight units of N-methylpyrrolidone (NMP) to the reactor with a syringe under a nitrogen atmosphere, after dissolving, add 1 weight unit of 3-chloro - 2-Methyl-1-propene (MAC), after mixing well, react at 80°C for 24 hours, 36 hours, 48 ​​hours; pour t...

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Abstract

The invention relates to an alkaline anion exchange membrane and a production method thereof. A chlorine methyl group contained polymer serves as a main chain of membrane materials and the novel alkaline anion exchange membrane is produced after ionization through the ATRP (Atom Transfer Radical Polymerization) reaction grafting modification. A fat chain structure is introduced into a side chain after ATRP reaction grafting, an imidazole group can be added to obtain the membrane materials which are of an obvious micro phase separation structure, and accordingly the ionic conduction is facilitated. The five-membered heterocycle conjugation effect is achieved through imidazole small molecules, meanwhile the hofmann degradation can be effectively eliminated, and accordingly the stability of the membrane is improved. The produced alkaline anion exchange membrane structure can be regulated, the alkali-resistant stability, the heat stability and the battery performance are high, and meanwhile the great significance on the exploration on the alkali stability influence mechanism and improvement strategies of the membrane is achieved.

Description

technical field [0001] The invention relates to an alkaline anion exchange membrane, in particular to an alkaline anion exchange membrane and a preparation method thereof. Background technique [0002] Alkaline anion exchange membrane (AAEM) is the core component of an alkaline anion exchange membrane fuel cell. Alkaline anion exchange membrane fuel cells have low oxygen reduction overpotential and fast electrode reaction kinetics. Non-precious metals such as cobalt (Co), nickel (Ni), and iron (Fe) can be used as catalysts instead of platinum, which reduces the manufacturing cost of the battery. Moreover, problems such as electrolyte leakage and CO poisoning can be avoided, which will reduce the efficiency and service life of the battery. However, alkaline exchange membrane fuel cells still face the problems of low membrane conductivity and poor alkali stability. At present, the preparation methods of basic anion exchange membranes are mainly divided into three types: 1. C...

Claims

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Application Information

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IPC IPC(8): C08F283/06C08G65/48C08J5/22C08J7/00C08L51/08H01M2/16
CPCY02E60/10
Inventor 张凤祥张保强
Owner DALIAN UNIV OF TECH
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