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Preparation method of gas diffusion layer with anti-polarity capability

A technology of gas diffusion layer and capacity, applied in the direction of electrical components, battery electrodes, structural parts, etc., can solve the problem that carbon materials are easy to be decomposed, so as to improve the anti-reverse ability, improve the reactivity of water electrolysis, and improve the anti-reverse effect of ability

Pending Publication Date: 2022-05-27
DONGFENG MOTOR GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present application provides a preparation method of a gas diffusion layer with anti-reversal capability to solve the technical problem in the prior art that the carbon material of the gas diffusion layer is easily decomposed under the condition of ensuring the catalytic performance of the catalyst

Method used

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  • Preparation method of gas diffusion layer with anti-polarity capability
  • Preparation method of gas diffusion layer with anti-polarity capability
  • Preparation method of gas diffusion layer with anti-polarity capability

Examples

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preparation example Construction

[0036] In one embodiment of the present application, such as Figure 1 As shown, there is a method for preparing a gas diffusion layer with anti-polarity resistance, the method comprising:

[0037] S1. Graphene oxide and Ni were obtained, respectively 3 S 2 Solids, dispersants and crosslinkers;

[0038] S2. The graphene oxide was added to the solvent for mixing, and then the Ni was added 3 S 2 The solids are mixed to give a water electrolysis catalyst;

[0039] S3. The water electrolytic catalyst, the dispersant and the crosslinker are mixed, and then dispersed to obtain a microporous slurry with anti-polarity ability;

[0040] S4. The microporous layer slurry is sprayed onto the commercial gas diffusion layer to obtain a gas diffusion layer with anti-polarity ability;

[0041] Wherein, the solvent may be deionized water.

[0042] In some alternative embodiments, the graphene oxide, the solvent and the Ni 3 S 2 The mass ratio of solids is 1 to 5:2 to 3:2 to 10.

[0043] In an embod...

Embodiment 1

[0070] as Figure 1 As shown, a method for preparing a gas diffusion layer with anti-polarity capability, comprising:

[0071] S1. Graphene oxide and Ni were obtained, respectively 3 S 2 Solids, dispersants and crosslinkers;

[0072] S2. Graphene oxide is added to the solvent for mixing, followed by Ni 3 S 2 The solids are mixed to give a water electrolysis catalyst;

[0073] S3. The water electrolysis catalyst, dispersant and crosslinker are mixed, and then dispersed to obtain a microporous slurry with anti-polarity ability;

[0074] S4. Spray the microporous layer slurry onto commercial carbon paper SGL-22bb to obtain a gas diffusion layer with anti-polarity ability;

[0075]Among them, the solvent is deionized water, the dispersion is ultrasonic dispersion, the power of ultrasonic dispersion is 600W, and the time of ultrasonic dispersion is 60min.

[0076] Graphene oxide, solvents and Ni 3 S 2 The mass ratio of the solid is 1g:2g:2g.

[0077] The ratio of mass of the dispersant ...

Embodiment 2

[0093] Comparing Example 2 and Embodiment 1, the difference between Example 2 and Example 1 is:

[0094] Graphene oxide, solvents and Ni 3 S 2 The ratio of solid mass is 2g:2g:4g.

[0095] The ratio of mass of the dispersant and the crosslinker is 2g:2g.

[0096] The mass ratio of thiourea, nickel foam, solvent, N, N-dimethylformamide is 2g:5g:5g:10g.

[0097] The preset temperature is 140 °C and the holding time is 6h.

[0098] The ratio of concentrated sulfuric acid, concentrated nitric acid and graphite to mass volume is 10mL:15mL:5g.

[0099] The temperature of heating is 40 ° C, and the heating time is 1h.

[0100] The dispersing agent is isopropanol;

[0101] The crosslinking agent is dopamine.

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Abstract

The invention relates to the field of fuel cells, in particular to a preparation method of a gas diffusion layer with anti-polarity capability. The method comprises the following steps: respectively obtaining graphene oxide, a Ni3S2 solid, a dispersing agent and a cross-linking agent; adding the graphene oxide into a solvent for mixing, and then adding the Ni3S2 solid for mixing to obtain a water electrolysis catalyst; mixing the water electrolysis catalyst, the dispersing agent and the cross-linking agent, and then dispersing to obtain microporous layer slurry with antipolar resistance; spraying the microporous layer slurry onto a commercial gas diffusion layer to obtain a gas diffusion layer with anti-polarity capability; according to the preparation method, a catalyst Ni3S2 capable of improving hydrolysis reaction activity is loaded on graphene oxide, then a dispersing agent and a cross-linking agent are used, so that uniform distribution of the graphene oxide loaded with the catalyst can be ensured, microporous layer slurry with anti-pole-reflection capability is obtained, then the microporous layer slurry is sprayed on a gas diffusion layer, and the gas diffusion layer is formed. And the antipolarity resistance of the gas diffusion layer can be improved.

Description

Technical field [0001] The present application relates to the field of fuel cells, in particular to a method for preparing a gas diffusion layer with anti-polarity capability. Background [0002] Proton exchange membrane fuel cell is a kind of hydrogen energy into electrical energy power generation device, it has a high energy density, does not cause emission pollution advantages, the use of it in the automotive field will significantly reduce carbon emissions, to achieve carbon peak, carbon neutrality goals; but the proton exchange membrane fuel cell application in the automotive field, in addition to the need to improve its power density and durability and other performance, the most important thing is to improve its anti-polarity ability. [0003] The traditional way to improve the anti-pole ability of fuel cells is to add materials such as yttrium oxide to the catalyst, and the addition of yttrium oxide materials can delay the corrosion of carbon in the catalyst, thereby achi...

Claims

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Application Information

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IPC IPC(8): H01M4/88H01M4/86H01M4/90
CPCH01M4/8828H01M4/8605H01M4/8652H01M4/8663H01M4/8668H01M4/9075Y02E60/50
Inventor 高佳武唐雪君韩凯凯赵航张泽
Owner DONGFENG MOTOR GRP