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A kind of preparation method of proton exchange membrane

A technology of proton exchange membrane and carbon quantum dots, applied in electrochemical generators, fuel cells, electrical components, etc.

Active Publication Date: 2022-03-22
SHENZHEN GENERAL HYDROGEN ENERGY TECH CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The main purpose of the present invention is to provide a kind of preparation method of proton exchange membrane, aims to solve the technical problem that the transition metal cation and / or oxide in the prior art produce

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  • A kind of preparation method of proton exchange membrane
  • A kind of preparation method of proton exchange membrane
  • A kind of preparation method of proton exchange membrane

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preparation example Construction

[0043] Such as figure 1 As shown, in the present embodiment, a kind of preparation method of proton exchange membrane is provided, comprising the following steps:

[0044] S100, grafting hindered amines onto the surface of unmodified carbon quantum dots to obtain hindered amine-modified carbon quantum dots;

[0045] S200, uniformly mixing the hindered amine-modified carbon quantum dots, perfluorosulfonic acid resin and alcohol solution to obtain a polymer slurry;

[0046] S300. Obtain a proton exchange membrane according to the polymer slurry.

[0047] Due to the small particle size of the carbon quantum dots, the carbon quantum dots have better dispersibility, therefore, the carbon quantum dots can be uniformly distributed in the polymer slurry, thereby improving the dimensional stability and mechanical strength of the proton exchange membrane. Due to the large number of unsaturated bonds on the surface of carbon quantum dots, a large number of unsaturated bonds can realize...

Embodiment 1

[0074] Add water and ammonium citrate in a tetrafluoroethylene-bottomed hydrothermal reaction kettle at a mass ratio of 90:10 and disperse evenly to obtain a precursor solution. Raise the temperature of the hydrothermal reaction kettle to 180-200°C and place in water Reaction in a thermal reaction kettle for 6 hours to obtain carbon quantum dots, and centrifuge and concentrate the carbon quantum dots to obtain treated unmodified carbon quantum dots.

[0075] Add unmodified carbon quantum dots, 4-amino-2,2,6,6-tetramethylpiperidine and triethylamine in a mass ratio of 1:2:0.1 in the hydrothermal reaction kettle, and disperse evenly The temperature was raised to 160° C., and reacted in a hydrothermal reactor for 12 hours to obtain a hindered amine functionalized carbon quantum dot solution.

[0076] The hindered amine functionalized carbon quantum dot solution is subjected to dialysis treatment with a dialysis bag with a molecular weight cut-off of 8000-140000, and the hindered ...

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Abstract

The invention discloses a preparation method of a proton exchange membrane. The preparation method of the proton exchange membrane comprises the following steps: grafting hindered amine onto the surface of unmodified carbon quantum dots to obtain hindered amine modified carbon quantum dots; The hindered amine-modified carbon quantum dots, the perfluorosulfonic acid resin and the alcohol solution are uniformly mixed to obtain a polymer slurry; according to the polymer slurry, a proton exchange membrane is obtained. The invention grafts hindered amine and perfluorosulfonic acid resin on the basis of unmodified carbon quantum dots, and can prepare a proton exchange membrane with strong oxidation resistance, thereby improving the chemical stability and service life of the proton exchange membrane.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a preparation method of a proton exchange membrane. Background technique [0002] As an important branch of fuel cells, proton exchange membrane fuel cells (PEMFC) not only have the general advantages of fuel cells (high energy conversion efficiency, environmental friendliness), but also have fast start-up speed at room temperature, small size, and no electrolyte loss. , easy drainage, long life, high specific power and high specific energy. The proton exchange membrane (PEM) is one of the core components of the hydrogen-oxygen fuel cell. The proton exchange membrane provides a channel for the migration and transport of protons, and at the same time can play a role in blocking the anode fuel and cathode oxide, making the hydrogen-oxygen fuel cell The performance is closely related to the performance of the proton exchange membrane. [0003] Because perfluorosulfonic acid res...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/1069H01M8/1086H01M8/1088H01M8/1051H01M8/1039
CPCH01M8/1069H01M8/1086H01M8/1088H01M8/1051H01M8/1039Y02E60/50
Inventor 黄衡恢张立樊建涛黄逸斐
Owner SHENZHEN GENERAL HYDROGEN ENERGY TECH CORP LTD
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