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Anion-exchange membrane containing xanthene structure and preparation method and application of anion-exchange membrane

An anion exchange membrane and monomer technology, applied in structural parts, electrical components, circuits, etc., can solve problems such as low conductivity and poor chemical stability

Inactive Publication Date: 2016-05-11
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently in alkaline environment, low electrical conductivity and poor chemical stability are the main problems faced by AAEMFCs

Method used

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  • Anion-exchange membrane containing xanthene structure and preparation method and application of anion-exchange membrane
  • Anion-exchange membrane containing xanthene structure and preparation method and application of anion-exchange membrane
  • Anion-exchange membrane containing xanthene structure and preparation method and application of anion-exchange membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Add 5mmol of aromatic bisphenol monomer (formula II) containing a ton structure, and 5mmol of aromatic dihalogenated monomer Ar 1 (Formula 14), 5mmol of aromatic bisphenol monomer Ar 2 (Formula 12), 5mmol of aromatic dihalogenated monomer Ar 3 (Formula 14), 25mmol of potassium carbonate, 30ml of toluene and 50ml of sulfolane are added to a 250ml four-necked flask equipped with a water trap, thermometer, stirrer and nitrogen inlet and outlet. The temperature is raised to 140°C and reacted for 3h. Continue The temperature was raised to 210°C for 3 hours, the polymer solution was poured into ethanol to obtain a precipitate, washed with ethanol and deionized water 3 times, and vacuum dried at 80°C for 48 hours to obtain the polymer resin XanPAES-1; 1g polymer resin was dissolved To 20ml (31.86g) of 1,1,2,2-tetrachloroethane, add 1.27g of N-bromosuccinimide and 0.086g of benzoyl peroxide, and react at 85°C for 5h for bromine After cooling to room temperature, it was poured int...

Embodiment 2

[0075] Add 0.5 mmol of aromatic bisphenol monomer (formula II) containing a ton structure, and 0.5 mmol of aromatic dihalogenated monomer Ar 1 (Formula 15), 9.5mmol of aromatic bisphenol monomer Ar 2 (Formula 13), 9.5mmol of aromatic dihalogenated monomer Ar 3 (Formula 15), 25mmol of sodium carbonate, 20ml of toluene and 50ml of N,N-dimethylacetamide are added to a 250ml four-necked flask equipped with a water trap, thermometer, stirrer and nitrogen inlet and outlet. Heat up to 140°C for 3 hours, continue to heat up to 165°C for 12 hours, pour the polymer solution into ethanol to obtain polymer precipitation, wash it repeatedly with ethanol and deionized water for 3 times, and vacuum dry at 80°C for 48 hours to obtain polymer resin XanPAES-2; Dissolve 1g of polymer resin in 20ml (31.86g) of 1,1,2,2-tetrachloroethane, add 1.27g of N-bromosuccinimide and 0.086g of benzene peroxide Formyl, reacted at 85℃ for 5h for bromination reaction, cooled to room temperature, poured into ethan...

Embodiment 3

[0078] 9.5mmol of aromatic bisphenol monomer (formula II) containing octane structure, 9.5mmol of aromatic dihalogenated monomer Ar 1 (Formula 14), 0.5mmol of aromatic bisphenol monomer Ar 2 (Formula 12), 0.5mmol of aromatic dihalogenated monomer Ar 3 (Formula 15), 25mmol of cesium carbonate, 25ml of toluene and 50ml of N,N-dimethylformamide were added to a 250ml four-necked flask equipped with a water trap, thermometer, stirrer and nitrogen inlet and outlet. Warm up to 140°C for 3h, continue to heat up to 150°C for 20h, pour the polymer solution into ethanol to obtain polymer precipitation, wash it repeatedly with ethanol and deionized water 3 times, and vacuum dry at 80°C for 48h to obtain polymer resin XanPAES-3; Dissolve 1g polymer resin in 20ml (24.70g) 1,2-dichloroethane, add 1.27g N-bromosuccinimide and 0.0583g azobisisobutyronitrile, The bromination reaction was carried out by reacting at 80℃ for 6h. After cooling to room temperature, it was poured into ethanol for preci...

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Abstract

The invention discloses an anion-exchange membrane containing a xanthene structure and a preparation method and application of the anion-exchange membrane. The anion-exchange membrane is a polyarylether compound containing a quaternary ammonium salt side group and the xanthene structure, and the structure of the anion-exchange membrane is shown as a formula (I) (please see the formula in the description). According to the method, an aromatic bisphenol monomer containing the xanthene structure, an aromatic dihalogenation monomer Ar1 containing halogen atoms or / and an aromatic dihalogenation monomer Ar3 containing the halogen atoms and other aromatic bisphenol monomer Ar2 are taken as raw materials to be copolymerized to obtain a polyarylether compound containing the xanthene structure, then bromination and quaternization reactions are performed, and finally membrane coating and anion exchange are performed. The anion-exchange membrane takes polyether sulfone or / and polyether ketone as a framework of the proton exchange membrane, has the higher mechanical property and thermal stability, takes the quaternary ammonium salt group as the side group of the proton exchange membrane, has the good chemical stability and ionic conduction function and can serve as a battery diaphragm to be applied to an alkaline anion-exchange membrane fuel battery and an all-vanadium redox flow battery.

Description

Technical field [0001] The invention relates to the electrochemical field and the field of polymer membrane materials, in particular to a polyarylether compound containing quaternary ammonium salt side groups and a ton structure, an anion exchange membrane, and a preparation method and application thereof. Background technique [0002] Fuel cells (AFCs) are considered to be one of the most promising energy conversion devices in the 21st century. Proton exchange membrane fuel cells (PEMFCs), as a type of fuel cells (AFCs), have the advantages of high energy density and power density, environmental friendliness, quick start at room temperature, no electrolyte loss, long life, and simple structure. It has developed rapidly in recent years. PEMFCs is an acidic electrolyte system. The ion exchange membranes currently used are mainly produced by DuPont A series of membranes are representative, with relatively high ionic conductivity and mechanical properties, but they are expensive. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L71/10C08J5/22C08G65/48C08G65/40H01M4/94
CPCC08G65/40C08G65/4006C08G65/4012C08G65/48C08G2650/40C08G2650/50C08J5/2256C08J2371/10C08L71/00C08L2201/08C08L2203/16C08L2203/20H01M4/94Y02E60/50
Inventor 温乐乐陆地薛立新
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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