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Proton membrane for PEM water electrolysis and CCM integrated preparation process and equipment

A preparation process, water electrolysis technology, applied in the direction of liquid spraying equipment, electrolysis process, electrolysis components, etc., can solve the problem of swelling of proton exchange membrane, achieve good dispersion, avoid residue, increase the effect of proton conductivity

Active Publication Date: 2022-03-18
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a PEM water electrolysis proton membrane and CCM integrated preparation process and equipment, aiming at solving the problem of swelling of the proton exchange membrane in the water electrolysis membrane electrode preparation process, and improving the electrochemical performance of the membrane electrode

Method used

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  • Proton membrane for PEM water electrolysis and CCM integrated preparation process and equipment
  • Proton membrane for PEM water electrolysis and CCM integrated preparation process and equipment
  • Proton membrane for PEM water electrolysis and CCM integrated preparation process and equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] (1) Slurry configuration:

[0065] Weigh 0.5g of acetylene black powder, add 500g of ethanol solvent, and disperse with ultrasonic stirring at room temperature for 1 hour to obtain pretreatment slurry 1 with a content of 0.1%;

[0066] Weigh 0.5 g of Pt nanopowder with a Pt loading of 100%, add 500 g of ethanol solvent, and disperse with ultrasonic stirring at room temperature for 1 h to obtain catalyst slurry 2 with a content of 0.1%;

[0067] Weigh 5 g of 0.5% of the structure as -OCF 2 SO 3 Add 50 g of deionized water to the short side chain perfluorosulfonic acid resin solution of H, and ultrasonically stir at room temperature for 1 h to obtain a polymer binder slurry 3 with a particle size of dispersed particles of 10 nm;

[0068] Weigh 2 g of phosphorylated ceria with a particle diameter of 1 nm, add 198 g of deionized water, and ultrasonically stir at room temperature for 1 hour to obtain functional nanoparticle slurry 4 with a concentration of 0.1%.

[0069] ...

Embodiment 2

[0080] (1) Slurry configuration:

[0081] Weigh 5g of XC-72 carbon powder, add 95g of isopropanol solvent, disperse with ultrasonic stirring at room temperature for 10h, and obtain pretreatment slurry 1 with a content of 5%;

[0082] Weigh 5g of Pt / C catalyst with a Pt loading of 10%, add 95g of isopropanol solvent, and disperse with ultrasonic stirring at room temperature for 10h to obtain catalyst slurry 2 with a content of 5%;

[0083] Weigh 5 g of 15% of the structure as -OCF 2 CF 2 CF 2 SO 3 Add 50 g of deionized water to the short side chain perfluorosulfonic acid resin solution of H, and ultrasonically stir at room temperature for 24 hours to obtain a polymer binder slurry 3 with a particle size of dispersed particles of 200 nm;

[0084] Weigh 3g of sulfonated manganese dioxide with a particle diameter of 10nm, add 97g of isopropanol solvent, and ultrasonically stir at room temperature for 24 hours to obtain functional nanoparticle slurry 4 with a concentration of ...

Embodiment 3

[0096] (1) Slurry configuration:

[0097] Weigh 2g of graphite carbon powder, add 98g of methanol solvent, disperse with ultrasonic stirring at room temperature for 5h, and obtain pretreatment slurry 1 with a content of 2%;

[0098] Weigh 2g of Pt / C catalyst with a Pt loading of 60%, add 98g of methanol solvent, and disperse with ultrasonic stirring at room temperature for 5h to obtain catalyst slurry 2 with a content of 2%;

[0099]Weigh 5g of 10% of the structure as -OCF 2 CF 2 SO 3 Add 50 g of deionized water to the short side chain perfluorosulfonic acid resin solution of H, and ultrasonically stir at room temperature for 10 h to obtain a polymer binder slurry 3 with a particle size of dispersed particles of 100 nm;

[0100] Weighing 1 g of phosphorylated ceria with a particle diameter of 5 nm, adding 99 g of methanol solvent, and ultrasonically stirring at room temperature for 10 h, to obtain functional nanoparticle slurry 4 with a concentration of 1%;

[0101] Weigh ...

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Abstract

The invention discloses a PEM water electrolysis proton membrane and CCM integrated preparation process and equipment, the equipment adopts a combination of multiple nozzles and a slit type coating head, the multiple nozzles can independently spray different components of a catalyst layer multi-component composite slurry within an ultra-short time, the spraying rate and atomization degree of the different components are accurately controlled, and the production efficiency is improved. The problem of poor dispersibility of different catalysts and binders in the catalyst slurry in the same solution is solved; the preparation process comprises the following steps of: sequentially compounding the base membrane pretreatment layer, the catalyst layer 1, the functional layer 1, the composite reinforced membrane, the functional layer 2, the catalyst layer 2 and the like on the substrate to realize the integrated preparation of the PEM water electrolysis composite reinforced membrane and the CCM catalyst layer; and finally, the PEM membrane electrode has relatively low surface resistance, relatively high conductivity, mass transfer rate and chemical durability, so that the cost of PEM electrolyzed water is reduced, and the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of proton exchange membrane water electrolysis, in particular to an integrated preparation process and equipment of a proton membrane and CCM for PEM water electrolysis. Background technique [0002] Hydrogen energy is a clean and renewable green energy, so the research on hydrogen energy has received more and more attention. Proton Exchange Membrane (PEM) water electrolysis hydrogen production is an emerging water electrolysis hydrogen production technology, which uses the proton exchange membrane as a solid electrolyte to replace the alkaline electrolyte and diaphragm, and uses pure water as the electrolyte , which has the characteristics of compact device, high purity of prepared hydrogen, high safety, no harmful impurities, clean and environmental protection, etc. In the PEM water electrolysis cell, the membrane electrode (Membrane Electrode Assembly, MEA) composed of a diffusion layer, a catalytic laye...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/04C25B13/08C25B9/23B05B5/08B05D1/04B05D7/00B05D7/04B05D7/24
CPCC25B1/04C25B13/08C25B9/23B05D7/24B05D7/04B05D7/584B05B5/08B05D1/04Y02E60/36
Inventor 郝金凯张洪杰邵志刚
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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