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Anion exchange membrane containing pyridine skeleton as well as preparation method and application of anion exchange membrane

An anion-exchange membrane and pyridine technology, applied in ion-exchange water/sewage treatment, chemical instruments and methods, fuel cells, etc., can solve problems such as poor chemical stability and low conductivity

Active Publication Date: 2016-06-22
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

At present, anion exchange membranes have the problems of low conductivity and poor chemical stability in AAEMFCs

Method used

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  • Anion exchange membrane containing pyridine skeleton as well as preparation method and application of anion exchange membrane
  • Anion exchange membrane containing pyridine skeleton as well as preparation method and application of anion exchange membrane
  • Anion exchange membrane containing pyridine skeleton as well as preparation method and application of anion exchange membrane

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] 5mmol of pyridine-containing bisphenol monomer (formula 13), 5mmol of dihalogenated monomer A (formula 22), 5mmol of bisphenol monomer B (formula 19), 5mmol of dihalogenated monomer C (Formula 22), 25mmol of potassium carbonate, 30ml of toluene and 50ml of sulfolane are added to a 250ml four-necked flask equipped with a water separator, a thermometer, an agitator and a nitrogen inlet and outlet, and the temperature is first raised to 140° C. for 3 hours, and then Raise the temperature to 210°C for 3 hours, pour the polymer solution into ethanol to obtain a precipitate, wash it repeatedly with ethanol and deionized water three times, and dry it in vacuum at 80°C for 48 hours to obtain polyarylether polymer resin PPYPAES-1; The product resin was dissolved in 20ml (31.86g) of 1,1,2,2-tetrachloroethane, added 1.27g of N-bromosuccinimide and 0.086g of benzoyl peroxide, and reacted at 85°C Bromination reaction was carried out for 5 hours, cooled to room temperature, poured in...

Embodiment 2

[0074] 5mmol of bisphenol monomer containing pyridine group (formula 14), 5mmol of dihalogenated aromatic monomer A (formula 23), 5mmol of bisphenol monomer B (formula 20), 5mmol of dihalogenated monomer C (formula 23), the sodium carbonate of 25mmol, the toluene of 20ml and the N,N-dimethylacetamide of 50ml join in the 250ml four-neck flask that water trap, thermometer, stirrer and nitrogen inlet and outlet are housed, First raise the temperature to 140°C for 3 hours, continue to raise the temperature to 165°C for 12 hours, pour the polymer solution into ethanol to obtain polymer precipitation, wash with ethanol and deionized water repeatedly for 3 times, and vacuum dry at 80°C for 48 hours to obtain pyridine-containing Skeleton polymer resin PPYPAES-2; dissolve 1g of polymer resin in 20ml (31.86g) of 1,1,2,2-tetrachloroethane, add 1.27g of N-bromosuccinimide and 0.086 g of benzoyl peroxide, reacted at 85°C for 5h for bromination reaction, cooled to room temperature, poured i...

Embodiment 3

[0078] 5mmol of novel bisphenol monomer containing pyridine group (formula 15), 5mmol of dihalogenated aromatic monomer A (formula 24), 5mmol of bisphenol monomer B (formula 21), 5mmol of dihalogenated mono Body C (formula 24), 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 separator, a thermometer, a stirrer and a nitrogen inlet and outlet , first raised the temperature to 140°C for 3 hours, then continued to heat up to 150°C for 20 hours, poured the polymer solution into ethanol to obtain a polymer precipitate, repeatedly washed with ethanol and deionized water for 3 times, dried in vacuum at 80°C for 48 hours, and obtained Pyridine skeleton polymer resin PPYPAES-3; dissolve 1g of polymer resin in 20ml (24.70g) of 1,2-dichloroethane, add 1.27g of N-bromosuccinimide and 0.0583g of dichlorosuccinimide Azodiisobutyronitrile, reacted at 80°C for 6h for bromination reaction, cooled to roo...

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Abstract

The invention discloses an anion exchange membrane containing a pyridine skeleton as well as a preparation method and application of the anion exchange membrane. The anion exchange membrane containing the pyridine skeleton, provided by the invention, is provided with a structure shown as in a formula (I). The anion exchange membrane is prepared by taking polyether ketone or / and polyether sulfone polyarylether compounds containing the pyridine skeletons as main chains, taking quaternary ammonium salt lateral groups as side chains and using a coating method. The anion exchange membrane containing the pyridine skeleton has relatively-high ionic conduction property, excellent mechanical property, thermal stability and chemical stability, and can be used as a battery diaphragm to be applied to an alkaline anion exchange membrane fuel cell and an all-vanadium redox flow battery. Meanwhile, the anion exchange membrane also can be applied to the fields of electrodialysis, sea water desalination, sewage treatment and the like.

Description

technical field [0001] The invention relates to the fields of electrochemistry and polymer membrane materials, in particular to a polyarylether compound containing a pyridine skeleton, an anion exchange membrane, a preparation method and application thereof. Background technique [0002] Fuel cells are considered to be one of the most promising energy conversion devices in the 21st century. Proton exchange membrane fuel cells, due to the need to use expensive perfluorosulfonic acid membranes At the same time, there are defects such as methanol fuel penetration and intermediate product poisoning of electrode catalysts, which seriously hinder its further large-scale market application. In order to overcome these technical problems, researchers proposed the concept of Alkaline Anion Exchange Membrane Fuel Cells (AAEMFCs), which is a fuel cell technology that works in an alkaline environment. Compared with proton exchange membrane fuel cells, it has obvious advantages. Featur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/22C08G75/23C08G65/40C08G65/48C08L81/06C08L71/10H01M8/106C02F1/42C02F103/08
CPCC02F1/42C02F2001/422C02F2103/08C08G65/4025C08G65/4037C08G65/48C08G75/23C08J5/2256C08J5/2262C08J2371/10C08J2381/06C08L71/08C08L81/06C08L2201/08C08L2203/16C08L2203/20H01M8/106Y02E60/50
Inventor 温乐乐陆地薛立新
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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