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A polyelectrolyte membrane for new energy vehicle fuel cell and preparation method thereof

A new energy vehicle and polyelectrolyte technology, applied in the field of polyelectrolyte membrane for new energy vehicle fuel cell and its preparation, can solve the problems of poor weather resistance, chemical stability and high cost

Active Publication Date: 2020-12-11
义乌市倩飞科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a polyelectrolyte membrane for fuel cells of new energy vehicles, which overcomes the more or less high cost, poor weather resistance and chemical stability of traditional polyelectrolyte membranes, mechanical properties, ion conduction, etc. It has the advantages of low preparation cost, good mechanical and mechanical properties, weather resistance, alkali resistance, excellent chemical stability, and high ion conductivity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for preparing a polyelectrolyte membrane for a fuel cell of a new energy vehicle, comprising the steps of:

[0029] Ⅰ Preparation of 1-adamantyl hydroxy-substituted methyl-2-fluoroimidazole: Add 19.1 g of 1-adamantyl carboxaldehyde and 5 g of potassium tert-butyl alkoxide into 100 g of N,N-dimethylformamide, under nitrogen atmosphere Stir at -20°C for 30 minutes, then add 10 g of 2-fluoroimidazole to it, stir and react for 4 hours, then warm to room temperature, wash the product with water for 3 times, and then rotary evaporate to remove water to obtain 1-adamantyl hydroxy-substituted methyl -2-flumimidazole;

[0030] II Preparation of polymeric cyclobutyl-substituted imidazolium salts: 13.6 g of 1-adamantyl hydroxy-substituted methyl-2-fluoroimidazole prepared in step I, 1,1,2-trifluoro-2-chloro-3 - Add 10 g of methyl-3-vinylcyclobutane into 100 g of dichloromethane, stir and react at 30°C for 6 hours, and then remove the dichloromethane by rotary evaporation...

Embodiment 2

[0035] A method for preparing a polyelectrolyte membrane for a fuel cell of a new energy vehicle, comprising the steps of:

[0036] Ⅰ Preparation of 1-adamantyl hydroxy-substituted methyl-2-fluoroimidazole: Add 19.1 g of 1-adamantyl carboxaldehyde and 6 g of sodium hydride into 110 g of N,N-dimethylacetamide, under helium atmosphere -25 Stir at ℃ for 32 minutes, then add 10 g of 2-fluoroimidazole, stir and react for 4.5 hours, then rise to room temperature, wash the product with water 4 times, and then remove the water by rotary evaporation to obtain 1-adamantylhydroxy-substituted methyl-2 - flumisole;

[0037]II Preparation of polymeric cyclobutyl-substituted imidazolium salts: 13.6 g of 1-adamantyl hydroxy-substituted methyl-2-fluoroimidazole prepared in step I, 1,1,2-trifluoro-2-chloro-3 -Add 10 g of methyl-3-vinylcyclobutane into 115 g of dichloromethane, stir and react at 33°C for 6.5 hours, and then remove the dichloromethane by rotary evaporation to obtain a polymeric ...

Embodiment 3

[0042] A method for preparing a polyelectrolyte membrane for a fuel cell of a new energy vehicle, comprising the steps of:

[0043] Ⅰ Preparation of 1-adamantyl hydroxy-substituted methyl-2-fluoroimidazole: 19.1 g of 1-adamantyl carboxaldehyde and 6.5 g of lithium boride were added to 135 g of N-methylpyrrolidone, under neon atmosphere at -30°C Stir for 35 minutes, then add 10 g of 2-fluoroimidazole, stir and react for 5 hours, then rise to room temperature, wash the product with water for 4 times, and then remove the water by rotary evaporation to obtain 1-adamantylhydroxy-substituted methyl-2- flumidazole;

[0044] II Preparation of polymeric cyclobutyl-substituted imidazolium salts: 13.6 g of 1-adamantyl hydroxy-substituted methyl-2-fluoroimidazole prepared in step I, 1,1,2-trifluoro-2-chloro-3 - Add 10 g of methyl-3-vinylcyclobutane into 135 g of dichloromethane, stir and react at 36°C for 7 hours, and then remove the dichloromethane by rotary evaporation to obtain a poly...

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Abstract

The invention provides a manufacturing method of a polyelectrolyte membrane used for a new energy vehicle power battery. The method comprises the following steps of (1) manufacturing 1-adamantinyl hydroxyl substituted methyl-2-fluorine imidazole; (2) manufacturing polymeric cyclobutyl substituted imidazole salt; (3) manufacturing a polyelectrolyte membrane material; and (4) carrying out ion exchange. The invention also discloses the polyelectrolyte membrane used for the new energy vehicle power battery, wherein the membrane is manufactured by the manufacturing method. The polyelectrolyte membrane used for the new energy vehicle power battery has advantages of low manufacturing cost, a good mechanical property, weather resistance performance, alkali resistance performance, excellent chemical stability and a high ionic conductivity.

Description

technical field [0001] The invention belongs to the technical field of new energy vehicles, and relates to a fuel cell component of a new energy vehicle, in particular to a polyelectrolyte membrane for a fuel cell of a new energy vehicle and a preparation method thereof. Background technique [0002] With the development of the economy and the advancement of the global industrialization process, environmental and energy issues are becoming more and more serious. These problems have brought resistance to the progress of society and are problems that people have to face and urgently need to be solved. In order to fundamentally solve these problems, it is necessary to find the root causes of these problems, among which the car is one of the root causes. Traditional cars need to consume gasoline resources, and the exhaust gas will cause serious air pollution. Therefore, it is imperative to develop clean, pollution-free and energy-saving new energy vehicles. [0003] All vehicle...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/1069H01M8/1072H01M8/1044C08F283/00C08F220/42
CPCY02E60/50
Inventor 杨记周
Owner 义乌市倩飞科技有限公司
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