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Preparation method of optimized membrane electrode containing anion exchange resin transition layer for electrolysis

A technology of anion exchange membrane and exchange resin, applied in the direction of electrode shape/type, fuel cell parts, etc., can solve the problems of high price, achieve the effect of improving performance, wide application value, and reducing ohmic drop loss

Active Publication Date: 2018-03-27
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the high price is the main reason restricting the further commercial application of SPE water electrolysis technology. Therefore, how to reduce the cost and improve the electrolysis efficiency is the focus of the researchers from all over the world.

Method used

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  • Preparation method of optimized membrane electrode containing anion exchange resin transition layer for electrolysis
  • Preparation method of optimized membrane electrode containing anion exchange resin transition layer for electrolysis
  • Preparation method of optimized membrane electrode containing anion exchange resin transition layer for electrolysis

Examples

Experimental program
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Effect test

Embodiment 1

[0032] (1) Preparation of catalyst slurry: First weigh 93 mg of Ir black and 62 mg of 70 wt.% Pt / C, and then mix a certain amount of ethanol according to the mass ratio of catalyst and anion exchange resin (AS-4) at a ratio of 4:1 , isopropanol or n-propanol, the mass ratio of the catalyst to ethanol, isopropanol or n-propanol is 1:40, and the mixed slurry is ultrasonically mixed for 20min. Then according to the membrane electrode area according to 0.6mg / cm 2 The loading amount of the anion exchange resin was weighed, mixed with ethanol / isopropanol / n-propanol at a ratio of 1:40, and then sonicated for 15 min.

[0033](2) Spraying of catalyst slurry: The ethanol, isopropanol or n-propanol solution of the anion exchange resin prepared in (1) was sprayed on both sides of the anion exchange membrane (A201), and then the ultrasonic The uniform catalyst slurry was sprayed on both sides of the membrane, and the above spraying operations were all carried out on a hot stage, and the t...

Embodiment 2

[0038] The same membrane electrode preparation process as in Example 1 was adopted, and the electrolyte of the electrolytic cell was changed from KHCO with a concentration of 1 wt.% 3 The solution was replaced with deionized water, and the full battery was assembled for testing. The relevant test results are as follows: Figure 4 shown.

Embodiment 3

[0040] During the experiment, it was found that the content of resin in the catalytic layer would affect the overall performance of the electrolytic cell. By adjusting the proportions of different components in the MEA preparation process, when the mass ratio of catalyst to resin (AS-4) in the catalytic layer was 5 : 1, the performance of the electrolytic cell has been improved. Figure 5 is the steady-state polarization curve of the full cell under the same test conditions as Example 2. At this time, the electrolysis voltage of the electrolytic cell was reduced to 1.931V@500mA / cm 2 .

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Abstract

The invention relates to an optimized preparation method of a membrane electrode containing an anion exchange resin transition layer for electrolysis. The membrane electrode assembly comprises a specific combination of anion exchange resin transition layer, catalyst layer, cathode gas diffusion layer, anode gas diffusion layer and anion exchange membrane. When the membrane electrode assembly prepared by the invention is used as an alkaline solid polymer electrolyte (AEM) water electrolysis cell, it has better performance. The invention has wide application value in renewable fuel cell (RFC), photoelectric catalysis and electrolysis hydrogen generator devices.

Description

technical field [0001] The invention relates to an optimized preparation method of a membrane electrode containing an anion exchange resin transition layer for electrolysis. specific combination. It can be used in AEM water electrolysis, RFC or various electrolysis devices. Background technique [0002] In recent years, solid polymer electrolyte (SPE) water electrolysis technology has become a research hotspot in the field of hydrogen production due to its high efficiency, zero emission, compact structure, environmental friendliness, and high product purity. In aerospace, medical, analysis and other fields. However, the high price is the main reason that restricts the further commercial application of SPE water electrolysis technology. Therefore, how to reduce the cost and improve the electrolysis efficiency is the focus of researchers from all over the world. Drawing on the design of SPE water electrolysis cell, based on the concept of zero-gap electrolysis cell, AEM wat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/03H01M8/02
CPCY02E60/50
Inventor 俞红梅迟军李光福王浚英邵志刚
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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