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Anion-exchange membrane for fuel cell and preparation method of anion-exchange membrane

An anion exchange membrane and fuel cell technology, which is applied in fuel cells, circuits, electrical components, etc., can solve the problem of poor thermal stability and chemical stability of polymer anion exchange membranes, which affect the performance and service life of fuel cells, and affect the overall performance of polymers. Performance and other issues, to achieve the effect of maintaining anion conductivity, low raw material prices, and low requirements for equipment and reaction conditions

Active Publication Date: 2018-10-26
天朤(江苏)氢能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The traditional anion exchange membrane for fuel cells is a quaternary ammonium salt polymer membrane. During the halomethylation process, it is difficult to accurately control the position and degree of halomethylation, so it will cause many side reactions. It affects the overall performance of the polymer, and the polymer anion exchange membrane obtained by the traditional preparation process has poor thermal stability and chemical stability, especially at higher temperatures or alkaline conditions, it is prone to degradation, thus affecting the performance and service life of the fuel cell

Method used

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  • Anion-exchange membrane for fuel cell and preparation method of anion-exchange membrane

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Embodiment 1

[0028] A method for preparing an anion exchange membrane for a fuel cell, comprising the steps of:

[0029] 1) Preparation of polymeric 1-(2-ethoxyethyl)-2-(4-piperidinyl)-1H-benzimidazole: 1-(2-ethoxyethyl)-2-( 19.2g of 4-piperidinyl)-1H-benzimidazole, 10g of glycidyl methacrylate, 3g of sodium hydroxide, and 3g of sodium sulfate were added to 90g of dichloromethane, stirred and reacted at 70°C for 4 hours, filtered and Take the filtrate, and remove the solvent by rotary evaporation;

[0030] 2) Preparation of polymeric 1-(2-ethoxyethyl)-2-(4-piperidinyl)-1H-benzimidazolium salt: the polymeric 1-(2) prepared in step 1) -Ethoxyethyl)-2-(4-piperidinyl)-1H-benzimidazole 5g was dissolved in 10g of dichloromethane, after it was completely dissolved, 1g of chloromethyl methyl ether and 0.3g of potassium hydroxide were added , stirred and reacted at room temperature for 6 hours, then filtered and took the filtrate, and removed the solvent by rotary evaporation;

[0031] 3) Prepar...

Embodiment 2

[0036] A method for preparing an anion exchange membrane for a fuel cell, comprising the steps of:

[0037] 1) Preparation of polymeric 1-(2-ethoxyethyl)-2-(4-piperidinyl)-1H-benzimidazole: 1-(2-ethoxyethyl)-2-( Add 19.2g of 4-piperidinyl)-1H-benzimidazole, 10g of glycidyl methacrylate, 4g of potassium hydroxide, and 4.5g of sodium sulfide into 100g of ether, stir and react at 72°C for 4.5 hours, filter and take Filtrate, rotary evaporation removes solvent;

[0038] 2) Preparation of polymeric 1-(2-ethoxyethyl)-2-(4-piperidinyl)-1H-benzimidazolium salt: the polymeric 1-(2) prepared in step 1) 5 g of -ethoxyethyl)-2-(4-piperidinyl)-1H-benzimidazole was dissolved in 12.5 g of dichloromethane, and after it was completely dissolved, 1 g of chloromethyl methyl ether and 0.4 g of sodium hydroxide were added g, stirred at room temperature and reacted for 6.5 hours, then filtered and got the filtrate, and the solvent was removed by rotary evaporation;

[0039]3) Preparation of poly...

Embodiment 3

[0044] A method for preparing an anion exchange membrane for a fuel cell, comprising the steps of:

[0045] 1) Preparation of polymeric 1-(2-ethoxyethyl)-2-(4-piperidinyl)-1H-benzimidazole: 1-(2-ethoxyethyl)-2-( Add 19.2g of 4-piperidinyl)-1H-benzimidazole, 10g of glycidyl methacrylate, 5.5g of potassium carbonate, and 6g of ammonium thiocyanate into 105g of tetrahydrofuran, stir and react at 75°C for 5 hours, filter and Take the filtrate, and remove the solvent by rotary evaporation;

[0046] 2) Preparation of polymeric 1-(2-ethoxyethyl)-2-(4-piperidinyl)-1H-benzimidazolium salt: the polymeric 1-(2) prepared in step 1) -Ethoxyethyl)-2-(4-piperidinyl)-1H-benzimidazole 5g was dissolved in 12.5g of dichloromethane, after it was completely dissolved, 1g of chloromethyl methyl ether and 0.42g of potassium carbonate were added , stirred and reacted at room temperature for 7 hours, then filtered and took the filtrate, and removed the solvent by rotary evaporation;

[0047] 3) Pre...

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Abstract

The invention provides a preparation method of an anion-exchange membrane for a fuel cell. The preparation method comprises the following steps of 1) preparing an aggregation-type 1-(2-ethoxyethyl)-2-(4-piperidyl)-1H-benzimidazole; 2) preparing an aggregation-type 1-(2-ethoxyethyl)-2-(4-piperidyl)-1H-benzimidazole salt; 3) preparing a polymer membrane; and 4) performing ion exchange. The inventionalso discloses the anion-exchange membrane, prepared according to the preparation method of the anion-exchange membrane for the fuel cell, for the fuel cell and an alkaline anion-exchange membrane battery employing the anion-exchange membrane for the fuel cell as a polyelectrolyte membrane. Compared with a traditional quaternary ammonium salt anion-exchange membrane in the prior art, the anion-exchange membrane for the fuel cell, obtained by preparation method has the advantages of higher negative ion conductivity, lower cost, better mechanical property and more excellent stability, alkali resistance and thermal resistance, and the application requirement of the alkali anion-exchange membrane fuel cell is met.

Description

technical field [0001] The invention belongs to the technical field of polyelectrolyte materials and relates to a fuel cell component, in particular to an anion exchange membrane for a fuel cell and a preparation method thereof. Background technique [0002] In recent years, with the development of the economy and the improvement of people's living standards, cars, as a means of transportation, have sprung up in the streets and alleys. While these cars bring convenience to people, they also cause many environmental problems and energy issue. Because ordinary cars are all fuel vehicles, they need to consume fuel, and fuel is a non-renewable energy source, and there is a shortage problem. Moreover, vehicle exhaust contains nitrogen oxides and other toxic and harmful gases that pollute the atmosphere. In order to solve these problems, new energy vehicles came into being. Among many new energy vehicles, fuel cell new energy vehicles have attracted extensive attention from rese...

Claims

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Application Information

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IPC IPC(8): H01M8/083C08F283/00C08F216/00C08F220/44
CPCC08F283/00H01M8/083H01M2300/0082C08F216/00C08F220/44Y02E60/50
Inventor 不公告发明人
Owner 天朤(江苏)氢能源科技有限公司
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