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Use of pyridine quaternary ammonium salt type alkaline or alkalescent polymer membranous

A technology of pyridinium quaternary ammonium salt and polymer membrane, which can be applied to fuel cell components, fuel cells, electrochemical generators, etc., and can solve problems such as difficulty in removing carbon dioxide, degradation of battery performance, and loss of electrolyte solution

Inactive Publication Date: 2011-10-12
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

due to CO in the air 2 and the CO produced by the oxidation of methanol 2 Can react with KOH or hydroxide in the alkaline polymer film, which will cause loss of electrolyte solution and decrease battery performance
Alcohol is used as fuel, and since the oxidation product of alcohol is carbon dioxide, the removal of carbon dioxide becomes difficult

Method used

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  • Use of pyridine quaternary ammonium salt type alkaline or alkalescent polymer membranous
  • Use of pyridine quaternary ammonium salt type alkaline or alkalescent polymer membranous
  • Use of pyridine quaternary ammonium salt type alkaline or alkalescent polymer membranous

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: the synthesis of poly(2-vinylpyridine)

[0019] Pour 80ml of hydroxypropylmethylcellulose (0.15g) aqueous solution into the polymerization bottle, add 25.7ml (25g) of 2-vinylpyridine, 0.2g of benzoyl peroxide, turn on the condensed water, start stirring to mix the reaction reagents evenly , and then pass high-purity nitrogen to eliminate the influence of soluble gases in the polymerization process. After 15 minutes, start heating with a constant temperature device, rapidly increase the reaction temperature to above 65°C, and maintain a certain stirring speed for suspension polymerization for a period of time (1-2h). The reaction temperature was increased to 85°C for another period of time (3h). After the product was washed with a large amount of hot water, it was dried naturally and then vacuum-dried at 60°C.

Embodiment 2

[0020] Embodiment 2: Synthesis of 2-vinylpyridine and styrene copolymer

[0021] Pour 80ml of hydroxypropylmethylcellulose (0.15g) aqueous solution into the polymerization bottle, add a mixture of 2-vinylpyridine and styrene at a mixing ratio of 0.2:1 to 0.8:1, 0.2g of benzoyl peroxide, Turn on the condensed water, start stirring to mix the reaction reagents evenly, and then pass high-purity nitrogen gas to eliminate the influence of soluble gases in the polymerization process, start heating with a constant temperature device after 15 minutes, quickly increase the reaction temperature to above 65 °C, and maintain a certain stirring speed Carry out suspension polymerization for a period of time (1-2h), raise the reaction temperature to 85°C and react for a period of time (3h). After the product was washed with a large amount of hot water, it was dried naturally and then vacuum-dried at 60°C.

[0022] The synthetic reaction of 2-vinylpyridine and trifluorostyrene copolymer is t...

Embodiment 3

[0023] Embodiment 3: the synthesis of poly(4-vinylpyridine)

[0024] The synthetic method of poly(4-vinylpyridine) resin is the same as in Example 1.

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Abstract

The invention discloses a quaternary pyridine salt type alkaline or alkalescent polymer membrane, which is used as a membrane material of a direct alcohol fuel cell. The quaternary pyridine salt type alkaline or alkalescent polymer membrane is produced from polymer materials which are subjected to membrane formation, quaternization reaction and alkalization reaction. The polymer materials are polymer materials produced by pyridine quaternization and a blend prepared from the polymer materials and polyvinylidene fluoride, bisphenol A polyethersulfone, polyether-ether-ketone, polyethersulfone, polyethersulfoneketone, poly(phthalazinone ether ketone), poly(phthalazinone ether sulfone) or poly(phthalazinone ether sulfone ketone) and so on which are blended. A direct methanol fuel cell (AMDMFC) adopting the quaternary pyridine salt type alkaline or alkalescent polymer membrane works under alkaline or alkalescent conditions, has the advantages of improving the oxidation reaction rate of methanol, eliminating the methanol permeation caused by electric dragging, widening the selection range of catalysts (including the catalysts of anodes and cathodes) and cell materials, simplifying watermanagement and so on.

Description

technical field [0001] The invention relates to the application of a pyridine quaternary ammonium salt type alkaline or weakly alkaline polymer membrane in direct alcohol fuel cell membrane materials. Background technique [0002] Direct methanol fuel cell (DMFC) is a kind of low-temperature fuel cell, especially suitable for mobile power supply and micro and small power supply. It has a very wide range of applications and has a very broad market prospect. It can be used for large-scale power supplies such as spacecraft, submarines, and armored vehicles; it can be used as a clean power supply for electric vehicles, electric motorcycles, electric bicycles, electric wheelchairs, etc.; it can also be used as a portable power supply for mobile communication equipment such as computers, communication equipment, and mobile phones; It can also be used as a mobile power source for field operations, field exploration, border posts, and individual operations; it can also be used for f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/18C08J7/00C08L39/08H01M8/02C08L27/16C08L81/06H01M8/103H01M8/1081
CPCY02E60/50
Inventor 李忠芳王素文于如军于先进樊彩霞
Owner SHANDONG UNIV OF TECH
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