High-yield fuel cell catalytic electrode coating production method and equipment thereof

A production method and catalytic electrode technology, applied to battery electrodes, devices for coating liquid on the surface, circuits, etc., can solve the problems of catalytic layer drop, high transfer rate of catalytic layer, swelling of proton exchange membrane, etc., and achieve easy adhesion , good proton conductivity, and the effect of improving yield

Active Publication Date: 2021-04-02
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a production method for coating the catalytic electrode of a high-yield fuel cell. In the preparation process of the catalytic layer, problems such as swelling of the proton exchange membran

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  • High-yield fuel cell catalytic electrode coating production method and equipment thereof

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Experimental program
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Effect test

Embodiment 1

[0049] (1) Mix 15g 10% Pt / C solid catalyst with 60g 5wt% perfluorosulfonic acid resin solution, add 30g deionized water and 450g isopropanol, ultrasonically disperse for 15min; then add 1.5g propylene glycol ethyl ether, ultrasonically Disperse for 30 minutes, then disperse with high-speed stirring for 60 minutes, then place it in a vacuum box and evacuate for 10 minutes to eliminate air bubbles, and obtain catalyst slurry;

[0050] (2) Weigh 0.5g nano silicon dioxide, 0.5g nano manganese dioxide, 0.5g phosphotungstic acid and 10g 5wt% perfluorosulfonic acid resin solution respectively, add 249.75g deionized water and 249.75g ethanol, 249.75g Deionized water and 249.75g of ethanol, 249.75g of deionized water and 249.75g of ethanol, 245g of deionized water and 245g of ethanol are stirred evenly to obtain compound solutions with a content of 0.1wt%, respectively, and are fed to the support body to moisturize Treatment, anti-oxidation treatment, enhanced proton conduction treatme...

Embodiment 2

[0055] (1) Take by weighing 10g 90% Pt / C solid catalyst and 20g 20wt% perfluorosulfonic acid resin solution and mix, add 13g deionized water and 167g ethanol, ultrasonic dispersion 15min; Add 2g 2-ethoxyethanol again, Ultrasonic dispersion for 30 minutes, followed by high-speed stirring for 100 minutes, and then placing it in a vacuum box for 20 minutes to eliminate air bubbles to obtain a catalyst slurry;

[0056] (2) Weigh 1g nano-zinc oxide, 1g nano-zirconia, 1g phosphomolybdic acid and 5g 20wt% perfluorosulfonic acid resin liquid respectively, add 249.5g deionized water and 249.5g isopropanol, 249.5g Deionized water and 249.5g of isopropanol, 249.5g of deionized water and 249.5g of isopropanol, 247.5g of deionized water and 247.5g of isopropanol were stirred evenly to obtain compound solutions with a content of 0.2wt% respectively. Load it into the spray booth where the support body is sprayed with moisturizing treatment, anti-oxidation treatment, enhanced proton conductio...

Embodiment 3

[0061] (1) Weigh 12g of 60% Pt / C solid catalyst and 30g of 10wt% perfluorosulfonic acid resin solution and mix, add 18g of deionized water and 240g of methanol, ultrasonically disperse for 15min; then add 1.8g of 2-ethoxyethanol , ultrasonically dispersed for 30 minutes, then dispersed with high-speed stirring for 80 minutes, and then placed in a vacuum box for 15 minutes to eliminate air bubbles to obtain a catalyst slurry;

[0062] (2) Weigh 1g of nano-zinc oxide, 1g of nano-zirconia, 1g of silicotungstic acid and 10g of 10wt% perfluorosulfonic acid resin solution respectively, and add 249.5g of deionized water, 249.5g of ethanol, and 249.5g of deionized Water and 249.5g of ethanol, 249.5g of deionized water and 249.5g of isopropanol, 245g of deionized water and 245g of isopropanol were stirred evenly to obtain compound solutions with a content of 0.2wt% respectively, which were respectively loaded into the opposite support The spray booth for spraying moisturizing treatment...

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Abstract

The invention discloses a high-yield fuel cell catalytic electrode coating production method and device. The method comprises the following steps: S1, adding solid catalyst particles and perfluorosulfonic acid resin liquid into deionized water, a low-boiling-point alcohol solvent and a slow drying agent, performing dispersion and defoaming, and obtaining a catalyst slurry; S2, selecting a first preset process to coat one side of a proton exchange membrane, and completely performing drying to form a catalyst layer A; S3, coating the catalyst slurry on a support body, and forming a support complex with a gel-state layer through multiple times of functional spraying treatment; and S4, carrying out hot-pressing transfer on the support complex with the gel-state layer and the other surface of the proton exchange membrane, and transferring the gel-state layer on the support complex to the other surface of the proton exchange membrane to obtain a catalytic electrode. in the preparation process of the membrane electrode, the problems of proton exchange membrane swelling, catalyst layer falling and the like are solved in a hot-pressing transfer mode, the rate of finished products is high, and the electrochemical performance of the catalyst layer is excellent.

Description

technical field [0001] The invention belongs to the field of fuel cells, and in particular relates to a production method for coating catalytic electrodes of fuel cells with high yield. Background technique [0002] A fuel cell is an electrochemical cell whose main principle is to convert the chemical energy in fuel and oxidant directly into electrical energy through oxidation-reduction reactions. As an important branch of the fuel cell field, the proton exchange membrane fuel cell (PEMFC) not only has the general characteristics of fuel cells such as high energy conversion efficiency and environmental friendliness, but also has fast start-up speed at room temperature, small size, no electrolyte loss, It has outstanding advantages such as easy drainage, long life, high specific power and specific energy. It is not only suitable for the construction of distributed power stations, but also suitable for mobile power supply. It is a new type of mobile power supply for military...

Claims

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Application Information

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IPC IPC(8): H01M4/88H01M4/86B05C1/04B05C9/14B05C13/02
CPCH01M4/8828H01M4/8882H01M4/8657H01M4/8878B05C9/14B05C1/04B05C13/02Y02E60/50
Inventor 郝金凯张洪杰邵志刚
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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