A polyphosphazene anion exchange membrane loaded with hydrogenated aromatic heterocyclic quaternary phosphonium cation units and its preparation method

An anion exchange membrane and quaternary phosphonium cation technology, which is applied in the field of anion exchange membranes for fuel cells, can solve problems such as the research on polyphosphazene anion exchange membranes that do not involve hydrogenated aromatic heterocyclic quaternary phosphonium cations, and achieve excellent alkali resistance. , the effect of good stability

Active Publication Date: 2021-06-08
BEIJING UNIV OF CHEM TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The above documents or patents do not involve the research of hydrogenated aromatic heterocyclic quaternary phosphonium cation-based polyphosphazene anion exchange membranes

Method used

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  • A polyphosphazene anion exchange membrane loaded with hydrogenated aromatic heterocyclic quaternary phosphonium cation units and its preparation method
  • A polyphosphazene anion exchange membrane loaded with hydrogenated aromatic heterocyclic quaternary phosphonium cation units and its preparation method
  • A polyphosphazene anion exchange membrane loaded with hydrogenated aromatic heterocyclic quaternary phosphonium cation units and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Take 1.57g of the hydrogenated aromatic heterocyclic quaternary phosphonium cation structure (p=3, q=1) shown in formula (2) and add 1.2eq of potassium carbonate into the ethanol solution, stir and react at room temperature for 24h. Afterwards, suction filtration and rotary evaporation obtain the potassium phenate sodium salt of the hydrogenated aromatic heterocyclic quaternary phosphonium cation; the above-mentioned hydrogenated aromatic heterocyclic quaternary phosphonium cation potassium phenate is added to the THF solution containing 3.48g polydichlorophosphazene, 60 ℃ reaction 48h;

[0038]Add 6.27g of unsubstituted n-amyl alcohol and 1.2eq of metal sodium into THF, react at room temperature for 6h, and then filter with suction to obtain a THF solution of n-amyl alcohol sodium salt;

[0039] Add the obtained THF solution of n-amyl alcohol sodium salt into the above solution, continue to react for 24 hours, then cool to room temperature, remove the solvent, and wash...

Embodiment 2

[0043] Take 4.70g of the hydrogenated aromatic heterocyclic quaternary phosphonium cation structure (p=3, q=1) shown in formula (2) and add 1.2eq of potassium carbonate into the ethanol solution, stir and react at room temperature for 24h. Afterwards, suction filtration and rotary evaporation obtain the potassium phenate sodium salt of the hydrogenated aromatic heterocyclic quaternary phosphonium cation; the above-mentioned hydrogenated aromatic heterocyclic quaternary phosphonium cation potassium phenate is added to the THF solution containing 3.48g polydichlorophosphazene, 60 ℃ reaction 48h;

[0044] Add 5.61g of unsubstituted n-amyl alcohol and 1.2eq of sodium metal into THF, react at room temperature for 6h, and then filter with suction to obtain a THF solution of n-amyl alcohol sodium salt;

[0045] Add the obtained THF solution of n-amyl alcohol sodium salt into the above solution, continue to react for 24 hours, then cool to room temperature, remove the solvent, and was...

Embodiment 3

[0049] Take 7.83g of the hydrogenated aromatic heterocyclic quaternary phosphonium cation structure (p=3, q=1) shown in formula (2) and add 1.2eq of potassium carbonate into the ethanol solution, stir and react at room temperature for 24h. Afterwards, suction filtration and rotary evaporation obtain the potassium phenate sodium salt of the hydrogenated aromatic heterocyclic quaternary phosphonium cation; the above-mentioned hydrogenated aromatic heterocyclic quaternary phosphonium cation potassium phenate is added to the THF solution containing 3.48g polydichlorophosphazene, 60 ℃ reaction 48h;

[0050] Add 4.95g of unsubstituted n-amyl alcohol and 1.2eq of sodium metal into THF, react at room temperature for 6h, and then filter with suction to obtain a THF solution of n-amyl alcohol sodium salt;

[0051] Add the obtained THF solution of n-amyl alcohol sodium salt into the above solution, continue to react for 24 hours, then cool to room temperature, remove the solvent, and was...

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Abstract

A polyphosphazene anion exchange membrane loaded with hydrogenated aromatic heterocyclic quaternary phosphonium cation units and a preparation method thereof, belonging to the technical field of anion exchange membranes for fuel cells. The anion exchange membrane is a polyphosphazene material containing a hydrogenated aromatic heterocyclic quaternary phosphonium cation unit, and its structure is shown in formula (1). The anion exchange membrane is made by reacting hydrogenated aromatic heterocyclic quaternary phosphonium cations with phenolic hydroxyl groups with polydichlorophosphazene to obtain a polyphosphazene material loaded with hydrogenated aromatic heterocyclic quaternary phosphonium cation units, and finally formed in a mold. Membranes were obtained by ion exchange. Compared with most quaternary ammonium anion exchange membranes, the hydrogenated aromatic heterocyclic quaternary phosphonium cation-based polyphosphazene anion exchange membrane provided by the present invention has stronger alkali stability, and effectively reduces the degradation problem of quaternary phosphonium cations in a strong alkali environment , but also has good ionic conductivity.

Description

technical field [0001] The invention belongs to the technical field of anion exchange membranes for fuel cells. In particular, it relates to an anion exchange membrane containing a hydrogenated aromatic heterocyclic quaternary phosphonium cation structure and a preparation method thereof. Background technique [0002] Fuel cells are a class of environmentally friendly and efficient energy conversion systems for stationary and automotive applications. As a new energy technology, fuel cells show great potential to replace conventional fossil energy due to their high efficiency and low or even zero emissions. Fuel cells, which convert chemical energy directly into electricity and avoid the limitations of the Carnot cycle, are considered to be one of the most promising technologies for power generation. Compared with other types of fuel cells, the anion exchange membrane fuel cell (AEMFC) technology has many advantages, so it has become one of the research hotspots in recent y...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/12C08J5/18C08G79/025H01M8/1034C08L85/02
CPCC08G79/025C08J5/18C08J7/12C08J2385/02H01M8/1034Y02E60/50
Inventor 汪中明曹峰屹朱红
Owner BEIJING UNIV OF CHEM TECH
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