Batch preparation method of membrane electrode for high mass transfer PEM water electrolysis

A technology of water electrolysis and membrane electrode, applied in the direction of electrodes, electrolysis process, electrolysis components, etc., to achieve the effect of high ion exchange capacity, excellent proton conductivity and good chemical stability

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 this invention is to provide a kind of preparation method of high mass transfer PEM water electrolysis membrane electrode, solve the peroxide free r

Method used

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  • Batch preparation method of membrane electrode for high mass transfer PEM water electrolysis
  • Batch preparation method of membrane electrode for high mass transfer PEM water electrolysis
  • Batch preparation method of membrane electrode for high mass transfer PEM water electrolysis

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0039] Example 1:

[0040] (1) Slurry configuration: Weighing a Pt nanopowder of 0.5 g of Pt loading, 500 g of ethanol solvent, tonifying supersonic dispersion for 1 h, resulting in a catalyst slurry 1 having an content of 0.1%;

[0041] It is weighed with a 0.5 g of a ruthenium loading of 100% ruthenium powder, and 500 g of ethanol solvent was added, and the mixture was dispersed at room temperature to obtain a catalyst slurry 2 having an content of 0.1%;

[0042] Weigh 5g 0.5% of the structure to -OCF 2 CF 2 SO 3 The short chain of H is the whole fluorosulfonic acid resin solution, add 50 g of deionized water, and stirred at room temperature for 1 h to obtain a binder slurry 3 having a particle diameter of 20 nm of the dispersion particles;

[0043] The phosphorylated cerium bium phosphorylated cerium having a 2G particle diameter was weighed, and 198 g of deionized water was added, and the mixture was stirred at room temperature for 1 h, and the concentration of 0.1% function n...

Example Embodiment

[0048] Example 2:

[0049] (1) Slurry configuration:

[0050] The 5 g of a Pt loading of 10% of the PT / C catalyst powder was suggested, and 95 g of isopropanol solvent was added, and the mixture was stirred at room temperature for 24 h to give a catalyst slurry 1 having a content of 5%;

[0051] It is weighed with 10% ruthenium / C powder of 5 g of iridium loading, and 95 g of isopropanol solvent is added, and the concentrated ultrasound is stirred at room temperature for 24 h, resulting in a catalyst slurry 2 having a content of 5%;

[0052] Weigh 5g 15% structure as -ocf 2 SO 3 The short chain of H is the entire fluorosulfonic acid resin solution, add 50 g of deionized water, and stirred at room temperature for 24 h to obtain a binder slurry 3 having a particle diameter of the resin dispersion particles of 200 nm;

[0053] Sulfinate manganese dioxide of 6 g of 6 g of particle diameter is weighed, and 194 g of ethanol is added, and the mixture is stirred at room temperature for...

Example Embodiment

[0058] Example 3:

[0059] (1) Slurry configuration:

[0060] The PT / C catalyst powder of 2 g of PT load was weighed, and 98 g of a n-propyl alcohol solvent was added, and the mixture was stirred at room temperature for 12 h to give a catalyst slurry 1 having a content of 2%;

[0061] It is weighed with a 2 g of the iridium loading of ruthenium / C powder, and 98 g of a n-propyl alcohol solvent was added, and the suction was dispersed at room temperature to obtain a catalyst slurry 2 having a content of 2%;

[0062] Weigh 5g 10% structure as -ocf 2 CF 2 CF 2 SO 3 The short chain of H is the whole fluorosulfonic acid resin solution, add 50 g of deionized water, and at room temperature for 12 h, the particle size of the resin dispersion particles is 100 nm is obtained;

[0063] Sulfinate cerium 5 nm of 2G particle diameter is suggested, and 98 g of n-propanol is added, and the mixture is ultrasonically stirred at room temperature for 12 h to give a function of a functional nanoparti...

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Abstract

The invention discloses a preparation method of a PEM water electrolysis membrane electrode, which comprises the following steps: spraying different components of a catalyst layer multi-component composite slurry independently in an ultra-short time by adopting a multi-nozzle type spraying device, and accurately controlling the spraying rate and atomization degree of the different components, so as to prepare the PEM water electrolysis membrane electrode. The problem of poor dispersibility of different catalysts and binders in the catalyst slurry in the same solution is solved; the multi-component composite slurry comprises catalysts with different components, high-conductivity short-side-chain perfluorinated sulfonic acid resin, a high-chemical-stability nano additive and the like, the proton transmission rate of the water electrolysis membrane electrode can be effectively increased, the electrolysis voltage can be reduced, the cost of PEM electrolyzed water is further reduced, and the service life is prolonged; the membrane electrode provided by the invention can be applied to devices such as a PEM water electrolyzer and a PEM water electrolysis hydrogen production system to be used as a proton exchange membrane electrode.

Description

technical field [0001] The invention relates to the technical field of proton exchange membrane water electrolysis, in particular to a method for preparing a high mass transfer PEM water electrolysis membrane electrode. Background technique [0002] Hydrogen 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 technologies, such as photovoltaic power generation, hydropower generation and wind power generation, electrolysis of water can be used as a large-scale hydrogen production technology, which will not pollute the environment Small, less greenhouse gas emissions, good economy, has a good application prospect. As the core component of the electrolyzed water system, the electrolyzer's investment and production costs determine the economy and ...

Claims

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Application Information

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IPC IPC(8): C25B1/04C25B9/23C25B13/08C25B11/081B05D7/04
CPCC25B1/04C25B9/23C25B13/08C25B11/081B05D7/04B05D7/544Y02E60/36Y02E60/50
Inventor 郝金凯张洪杰邵志刚
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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