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Multi-conduction-site polyphenyl ether based anion-exchange membrane for fuel cells and preparation method of multi-conduction-site polyphenyl ether based anion-exchange membrane

An anion exchange membrane and fuel cell technology, which is applied in the field of fuel cell materials and anion exchange membranes, can solve the problems of reducing fuel cell performance, increasing fuel cell cost, and easy CO poisoning of catalysts, so as to maintain relative integrity and dimensional stability Good, the effect of simplifying the synthesis steps

Active Publication Date: 2016-11-23
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, polymer membrane fuel cells with proton exchange membranes as electrolytes have a series of disadvantages: (1) under acidic conditions, they need to rely on noble metals such as platinum and gold as catalysts, which increases the cost of fuel cells; (2) under acidic conditions, The catalyst is prone to CO poisoning, which seriously reduces the performance of the fuel cell; (3) The direction of fuel and proton conduction is the same, which easily causes electrode short circuit

Method used

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  • Multi-conduction-site polyphenyl ether based anion-exchange membrane for fuel cells and preparation method of multi-conduction-site polyphenyl ether based anion-exchange membrane
  • Multi-conduction-site polyphenyl ether based anion-exchange membrane for fuel cells and preparation method of multi-conduction-site polyphenyl ether based anion-exchange membrane
  • Multi-conduction-site polyphenyl ether based anion-exchange membrane for fuel cells and preparation method of multi-conduction-site polyphenyl ether based anion-exchange membrane

Examples

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Effect test

Embodiment 1

[0051] 1. Preparation of polyphenylene ether (PPO) nitromethylimidazole skeleton:

[0052] Add 0.3g of commercially available polyphenylene ether to a 100mL three-necked flask equipped with a stirrer, condenser and air duct. Heat to 50°C under a nitrogen atmosphere. After the polyphenylene ether is completely dissolved, add 4.64g of commercially available peroxide Benzoyl (PPO) and 0.232g of commercially available N-bromosuccinimide (NBS), the temperature of the oil bath was raised to 80°C, after 4 hours of reaction, the temperature was lowered to room temperature, and the reactant solution was transferred In a rotary steaming flask, at 60°C, rotary steam until the color of the solution becomes brown, and then precipitate in methanol to obtain a light yellow solid. Dissolve the light yellow solid with commercially available dichloromethane, rotary steam and precipitate, and repeat this Operate 3 times to obtain pure light yellow brominated polyphenylene ether (BPPO), dry in an ov...

Embodiment 2

[0064] 1. Preparation of polyphenylene ether (PPO) nitromethylimidazole skeleton:

[0065] Add 0.3g of commercially available polyphenylene ether to a 100mL three-necked flask equipped with a stirrer, condenser and air duct. Heat to 50°C under a nitrogen atmosphere. After the polyphenylene ether is completely dissolved, add 4.64g of commercially available peroxide Benzoyl (PPO) and 0.232g of commercially available N-bromosuccinimide (NBS), raise the temperature of the oil bath to 80°C for 4 hours, then lower the temperature to room temperature, and transfer the reactant solution to In a rotary steaming flask, rotary steam at 60°C until the solution turns brown, and then precipitate in methanol to obtain a light yellow solid. Use commercially available dichloromethane to dissolve the light yellow solid, rotary steam, and precipitate. Repeat this operation 3 times. Obtain pure light yellow brominated polyphenylene ether (BPPO), dry it in an oven at 60°C, dissolve 0.25 g of dried BP...

Embodiment 3

[0076] 1. Preparation of polyphenylene ether (PPO) nitromethylimidazole skeleton:

[0077] Add 0.3g of commercially available polyphenylene ether to a 100mL three-necked flask equipped with a stirrer, condenser and air duct. Heat to 50°C under a nitrogen atmosphere. After the polyphenylene ether is completely dissolved, add 4.64g of commercially available peroxide Benzoyl (PPO) and 0.232g of commercially available N-bromosuccinimide (NBS), raise the temperature of the oil bath to 80°C for 4 hours, then lower the temperature to room temperature, and transfer the reactant solution to In a rotary steaming flask, rotary steam at 60°C until the solution is brown, and then precipitate in methanol to obtain a light yellow solid. Use commercially available dichloromethane to dissolve the light yellow solid, rotary steam, and precipitate. Repeat this operation 3 times to obtain Pure light yellow brominated polyphenylene oxide (BPPO), dried in an oven at 60°C, dissolve 0.25 g of dried BPPO...

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Abstract

The invention belongs to the technical field of fuel cell materials and discloses a multi-conduction-site polyphenyl ether based anion-exchange membrane for fuel cells and a preparation method of the multi-conduction-site polyphenyl ether based anion-exchange membrane. The anion-exchange membrane comprises 99wt% of a nitrogen methylimidazole quaternized polyphenyl ether anion-exchange membrane with a structural repeating unit II and 1wt% of doped polyion liquid with a structural formula I, wherein n refers to an integer not smaller than 1, carbon atom number of a linear alkyl group is 5-12, x refers to an integer not smaller than 0, y refers to an integer not smaller than 0, and x and y cannot be both 0 at the same time.

Description

Technical field [0001] The invention relates to a multi-conducting site polyphenylene ether-based anion exchange membrane for a fuel cell and a preparation method thereof, belonging to the technical field of fuel cell materials, especially the technical field of anion exchange membranes. Background technique [0002] Fuel cell is an efficient and clean energy conversion device. In recent years, polymer membrane fuel cells have been widely used. As a key material, polymer membranes play a decisive role in the performance and life of fuel cells. The most typical one is DuPont's Nafion membrane, which has excellent conductivity, high mechanical strength and chemical stability, and is the object of reference for researchers. However, polymer membrane fuel cells using proton exchange membranes as electrolytes have a series of shortcomings: (1) Under acidic conditions, they need to rely on precious metals such as platinum and gold as catalysts, which increases the cost of fuel cells; ...

Claims

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Application Information

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IPC IPC(8): C08L71/12C08L79/04C08J5/22C08G65/48C08G73/06H01M8/0243
CPCC08G65/485C08G73/0616C08J5/2256C08J2371/12C08J2479/04C08L71/12C08L2203/16H01M8/0243C08L79/04Y02E60/50
Inventor 朱红李瑞王芳辉李子明陈南君
Owner BEIJING UNIV OF CHEM TECH
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