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Preparation method of PEM water electrolysis hydrogen production membrane electrode slurry

A membrane electrode and water electrolysis technology, applied in electrodes, electrolysis components, electrolysis process, etc., can solve the problems of poor adaptability of renewable energy power generation, inability to quickly adjust the hydrogen production speed, difficult to quickly start and change load, etc. Interface resistance, improve performance, improve performance

Pending Publication Date: 2022-08-05
北京佳康尔水处理技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is the most mature technology at present. It has the advantages of simple tank structure, safety and reliability, long operating life, easy operation, and low price. However, its efficiency is low, and it needs to use strong corrosive lye. Alkali also has the disadvantages of being difficult to quickly start and change loads, and cannot quickly adjust the hydrogen production speed, so it is not compatible with renewable energy power generation, and due to the technical characteristics of alkaline electrolyzers, these shortcomings are difficult to overcome, so In recent years, proton exchange membrane electrolyzer (PEM) has been paid more and more attention by people.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1) Preparation of cathode catalyst slurry: selection of multi-layered organ-shaped Ti 3 C 2 T x (T x (-OH) material, silica powder, Nafion solution with a mass concentration of 5%, platinum mass concentration of 20% Pt / C powder, deionized water and ethanol as the main components of the cathode catalyst slurry. First, the mass concentration of 10 mg of platinum is 20% Pt / C powder, 0.01 mg of silica powder, 0.1 mg of multi-layered organ-shaped Ti 3 C 2 T x (T x -OH) material, 10 mL of deionized water and 50 mL of ethanol were stirred and mixed into a solution, and the solution was ultrasonically dispersed in an ice-water bath for 20 min; 30 mg of Nafion solution with a mass concentration of 5% was added to the solution, and ultrasonically dispersed in an ice-water bath Cathode catalyst slurry was prepared in 10 minutes;

[0036] 2) Preparation of anode catalyst slurry: selection of multi-layered organ-shaped Ti 3 C 2 T x (T x -OH) material, silica powder, 5% Na...

Embodiment 2

[0038] 1) Preparation of cathode catalyst slurry: choose organ-shaped Ti 2 CT x (T x For -O) material, aluminum oxide powder, Nafion solution with a mass concentration of 20%, platinum mass concentration of 40% Pt / C powder, deionized water and isopropanol were used as the main components of the cathode catalyst slurry. First, 10mg platinum mass concentration was 40% Pt / C powder, 0.5mg organ-shaped Ti 2 CT x (T x is-O) material, 0.1 mg of aluminum oxide powder, 10 mL of deionized water and 60 mL of isopropanol were stirred and mixed into a solution, and the solution was ultrasonically dispersed in an ice-water bath for 30 min; % Nafion solution, ultrasonically dispersed in ice-water bath for 30min to prepare cathode catalyst slurry;

[0039] 2) Preparation of anode catalyst slurry: choose organ-shaped Ti 2 CT x (T xis-O) material, aluminum oxide powder, 20% Nafion solution with mass concentration, 95% iridium dioxide powder, carbon black, deionized water and ethanol as ...

Embodiment 3

[0041] 1) Preparation of cathode catalyst slurry: choose organ-shaped Ti 3 CNTs x (T x -OH) material, titanium dioxide powder, 0.5% mass concentration of polybenzimidazole / N,N-dimethylacetamide solution, platinum mass concentration of 60% Pt / C powder, deionized water and ethylene glycol as cathode The main component of the catalyst slurry. First, 10 mg platinum mass concentration was 60% Pt / C powder, 2 mg organ-shaped Ti 3 CNTs x (T x -OH) material, 0.1 mg of titanium dioxide powder, 5 mL of deionized water and 30 mL of ethylene glycol were stirred and mixed into a solution, and the solution was ultrasonically dispersed in an ice-water bath for 40 min; then 800 mg of polyphenylene with a mass concentration of 0.5% was added to the solution. The imidazole / N,N-dimethylacetamide solution was ultrasonically dispersed in an ice-water bath for 50 min to obtain the cathode catalyst slurry;

[0042] 2) Preparation of anode catalyst slurry: choose organ-shaped Ti 3 CNTs x (T x...

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PUM

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Abstract

The invention discloses a preparation method of PEM water electrolysis hydrogen production membrane electrode slurry. The membrane electrode slurry comprises the following main components: an MXene material, an inorganic nano material, a binder, a catalyst and a solvent. According to the invention, MXene is used as a main component of the membrane electrode slurry, and a highly ordered two-dimensional layered nano channel is formed by supporting of terminal groups which are rich and uniformly distributed on the surface of MXene, so that transmission of protons and electrons is facilitated; the transmission of protons and electrons is accelerated by-OH,-O and the like of the end-capping groups, so that the performance of the catalyst layer can be improved on the premise of reducing the dosage of the membrane electrode catalyst; and the hydrophilic solution is used as the binder, so that the bonding of the catalyst and the membrane electrode bottom membrane is facilitated, the interface resistance is reduced, and the conductivity of the catalyst is improved, thereby greatly improving the use performance of the membrane electrode.

Description

technical field [0001] The invention relates to the field of membrane electrode preparation, in particular to a preparation method of membrane electrode slurry for PEM electrolysis of water for hydrogen production. Background technique [0002] In recent years, with the intensification of greenhouse gas emissions, the global climate has continued to warm, and the climate problem has become increasingly prominent. In response to this challenge, major countries around the world signed the Paris Climate Agreement in 2016, forming a climate consensus and formulating carbon dioxide emission reduction plans. In order to achieve this goal, it is becoming more and more urgent to use low-carbon and clean renewable energy to replace the current high-carbon fossil energy such as coal and oil. In this energy revolution, hydrogen energy has become the technology of choice for countries competing to develop new energy because of its advantages such as cleanliness, pollution-free, high en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B9/23C25B11/053C25B11/091C25B13/08C25B1/04
CPCC25B9/23C25B11/053C25B11/091C25B13/08C25B1/04Y02E60/36Y02P20/133
Inventor 罗小军周腾芳陈善云
Owner 北京佳康尔水处理技术有限公司