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Preparing method of membrane electrode in solid polymer water electrolyser and device for implementing method

A solid polymer, water electrolyzer technology, applied in the direction of electrodes, electrolysis process, electrolysis components, etc., can solve problems such as difficult guarantee, poor manual operation environment, etc., to reduce stress, protect mechanical properties, and improve uniformity Effect

Active Publication Date: 2016-01-20
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many traditional electrode manufacturing methods, such as rapid drying of the solvent on the surface of the membrane by infrared light irradiation, heating on a heating plate, and heating on a vacuum adsorption heating plate. The temperature of the membrane can only be guaranteed by the close contact of the plates, which is difficult to guarantee in the actual operation process
The infrared lamp heating method needs to load the ink under the condition of continuous irradiation on the film, the manual operation environment is not good, and mechanical loading equipment is required

Method used

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  • Preparing method of membrane electrode in solid polymer water electrolyser and device for implementing method
  • Preparing method of membrane electrode in solid polymer water electrolyser and device for implementing method
  • Preparing method of membrane electrode in solid polymer water electrolyser and device for implementing method

Examples

Experimental program
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Effect test

Embodiment 1

[0044] Preparation:

[0045] (1) Take a Nafion117 type proton exchange membrane of 4 × 4 cm, first use 5% hydrogen peroxide to treat it at 80°C for 1 hour, then wash it with pure water, transfer it to 0.5M sulfuric acid and treat it at 80°C for 1 hour, pure Wash with water.

[0046] (2) Take 27 mg of iridium oxide, add 0.135 g of distilled water, 0.5 g of isopropanol, and 30 mg of 5% perfluorosulfonic acid resin solution, and ultrasonically mix to form an anode catalyst ink.

[0047] (3) Place the Nafion117 film treated in step (1) in a beaker, keep the temperature at 80 degrees for 15 minutes, and then place it in a beaker such as figure 2 As shown, the device is laid flat in the device, and pure water at 80°C is passed through to maintain the swelling state of the membrane. The opening area of ​​the upper end plate of the device is 8cm 2 . Subsequently, the anode catalyst ink in step (2) is sprayed on the upper surface of the Nafion117 membrane to form an anode catalyst...

Embodiment 2

[0053] The difference from Example 1 is that in this example, the temperature of the water bath is 50°C for the fabrication of the membrane electrode, and the manufacturing process of the catalyst ink for the rest of the anode and cathode, the assembly of the water electrolyzer and the performance testing method are exactly the same as those of Example 1.

Embodiment 3

[0055] The difference from Example 1 is that in this example, the temperature of the water bath is 95°C for the fabrication of the membrane electrode, and the manufacturing process of the catalyst ink for the rest of the anode and cathode, the assembly of the water electrolyzer and the performance testing method are exactly the same as those of Example 1.

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Abstract

The invention provides a preparing method of a membrane electrode in a solid polymer water electrolyser. Two catalyst layers are formed on the two faces of a solid polymer electrolyte membrane respectively. At least one catalyst layer is formed in the following method that one side of the solid polymer electrolyte membrane makes contact with pure water with the temperature of 50-95 DEG C, the solid polymer electrolyte membrane is evenly heated through the water temperature, and when the membrane is kept in a swelling state, the face, not making contact with water, of the membrane is loaded with catalyst ink, and the catalyst layer is formed. The membrane electrode manufactured through the method has good uniformity and is more superior than membrane electrode manufactured through a traditional CCM method in performance. The invention further provides a device for implementing the method.

Description

technical field [0001] The invention belongs to the field of water electrolyzers, and in particular relates to a preparation method for a membrane electrode in a solid polymer water electrolyzer and a device for implementing the method. Background technique [0002] The solid polymer water electrolyzer is a water electrolysis device based on a solid polymer membrane. It has the advantages of high electrolysis efficiency, long life, good safety, and quick start and stop. It can be used for large-scale hydrogen production, oxygen production and renewable Energy storage for energy generation systems. [0003] Membrane electrodes are the core components of water electrolyzers. At present, the mainstream thin-layer membrane electrode preparation methods mainly include transfer printing method and CCM (Catalyst Coated Membrane) method. The transfer method is to make a catalytic layer on the surface of the transfer medium, and then combine it with the membrane by hot pressing to f...

Claims

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Application Information

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IPC IPC(8): C25B11/00C25B11/04C25B1/10
CPCY02E60/36
Inventor 史言阎常峰郭常青
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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