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Proton membrane for PEM water electrolysis and CCM integrated preparation method and device

A technology of water electrolysis and catalyst slurry, which is applied to the device for coating liquid on the surface, electrolysis process, electrolysis components, etc., can solve the problems of low mechanical strength, poor conductivity of proton exchange membrane, uneven composition of catalyst layer, etc., to achieve The preparation process is simple, the preparation time is shortened, and the effect of avoiding degradation damage

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 object of the present invention is to provide a method and device for the integrated preparation of proton membrane and CCM for PEM water electrolysis, aiming at solving the unevenness of each component of the catalyst layer and the proton Poor conductivity and low mechanical strength of the exchange membrane

Method used

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  • Proton membrane for PEM water electrolysis and CCM integrated preparation method and device
  • Proton membrane for PEM water electrolysis and CCM integrated preparation method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] (1) Slurry configuration:

[0067] 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%;

[0068] 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%;

[0069] Weigh 0.5 g of iridium nanopowder with 100% iridium loading, add 500 g of ethanol solvent, and disperse with ultrasonic stirring at room temperature for 1 h to obtain catalyst slurry 3 with a content of 0.1%;

[0070] Weigh 5g of the 5% structure as -OCF 2 SO 3 For the short side chain perfluorosulfonic acid resin solution of H, add 245 g of deionized water, and ultrasonically stir at room temperature for 24 hours to obtain a binder slurry 4 with a concentration of 0.1%;

[0071] Weigh 20g of 15% of the structure as -OCF 2 SO...

Embodiment 2

[0080] (1) Slurry configuration:

[0081] Weigh 5g of acetylene black powder, add 95g of isopropanol solvent, and disperse with ultrasonic stirring at room temperature for 24 hours to obtain pretreatment slurry 1 with a content of 5%;

[0082] Weigh 5g of Pt / C powder with a Pt loading of 10%, add 95g of isopropanol solvent, and disperse with ultrasonic stirring at room temperature for 24 hours to obtain catalyst slurry 2 with a content of 5%;

[0083] Weigh 5g of iridium nanopowder with iridium loading of 10%, add 95g of isopropanol solvent, and disperse with ultrasonic stirring at room temperature for 24h to obtain catalyst slurry 3 with a content of 5%;

[0084] Weigh 10g of 15% of the structure as -OCF 2 CF 2 SO 3 Add 65 g of ethanol to the short side chain perfluorosulfonic acid resin solution of H, and ultrasonically stir at room temperature for 24 hours to obtain a binder slurry 4 with a concentration of 2%;

[0085] Weigh 20g of 30% of the structure as -OCF 2 CF 2...

Embodiment 3

[0094] (1) Slurry configuration:

[0095] Weigh 2g of acetylene black powder, add 98g of n-propanol solvent, and disperse with ultrasonic stirring at room temperature for 12h to obtain pretreatment slurry 1 with a content of 2%;

[0096] Weigh 2g of Pt / C powder with a Pt loading of 60%, add 98g of n-propanol solvent, and disperse with ultrasonic stirring at room temperature for 12h to obtain catalyst slurry 2 with a content of 2%;

[0097] Weigh 2g of iridium nanopowder with iridium loading of 60%, add 98g of n-propanol solvent, and disperse with ultrasonic stirring at room temperature for 12h to obtain catalyst slurry 3 with a content of 2%;

[0098] Weigh 10g of 10% of the structure as -OCF 2 SO 3 For the short side chain perfluorosulfonic acid resin solution of H, add 90 g of n-propanol, and ultrasonically stir at room temperature for 12 hours to obtain a binder slurry 4 with a concentration of 1%;

[0099] Weigh 20g of 20% of the structure as -OCF 2 SO 3 For the short...

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Abstract

The invention discloses a PEM water electrolysis proton membrane and CCM integrated preparation method and device, the device 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 method comprises the following steps: 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 field of proton exchange membrane water electrolysis, in particular to a proton membrane and CCM integrated preparation method and device for PEM water electrolysis. Background technique [0002] Hydrogen energy is regarded as the most ideal energy carrier due to its clean, pollution-free, efficient, storable and transportable advantages. Hydrogen production by electrolysis of water is currently the easiest way to obtain pure hydrogen. If it is combined with renewable resource power generation technology, electrolysis of water can be used as a large-scale hydrogen production technology, which has less environmental pollution, less greenhouse gas emissions, and is more economical. Well, it has a good application prospect. Proton exchange membrane electrolysis water technology is to generate oxygen and hydrogen by electrolyzing water. Water flows into the channel and diffuses to the anode side of the proton exchange membrane...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/04C25B9/23C25B11/053C25B13/08B05B13/02B05D1/02B05D1/12B05D1/36B05D5/12B05D7/00B05D7/24
CPCC25B1/04C25B9/23C25B13/08C25B11/053B05D7/577B05D7/24B05D1/02B05D1/12B05D5/12B05D1/36B05B13/0278Y02E60/36Y02P20/133
Inventor 邵志刚郝金凯张洪杰
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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