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Anode catalyst layer and preparation method thereof

A catalytic layer and anode technology, applied in the direction of electrodes, coatings, electrode shapes/types, etc., can solve problems such as cracks in the catalytic layer

Pending Publication Date: 2022-03-11
氢辉能源(深圳)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The main purpose of the present invention is to propose a method for preparing an anode catalytic layer, which aims to solve the problem that the catalytic layer prepared by direct film coating by slot extrusion molding is prone to cracks in the prior art

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  • Anode catalyst layer and preparation method thereof
  • Anode catalyst layer and preparation method thereof
  • Anode catalyst layer and preparation method thereof

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Embodiment Construction

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0033] It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the specific posture changes, the directional indication will also change accordingly.

[0034] In addition, if there are descriptions involving "first", "second" and ...

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Abstract

The invention discloses an anode catalyst layer and a preparation method of the anode catalyst layer, and the preparation method of the anode catalyst layer comprises the following steps: preparing a mixed slurry containing a catalyst, deionized water, a high-molecular polymer proton conductor and an organic solvent, the ratio of the deionized water to the organic solvent in the mixed slurry being 90: 10-40: 60; carrying out grinding and heating treatment on the mixed slurry, so that the chain structure of the high-molecular polymer proton conductor in the mixed slurry is stretched and fully fused with the catalyst particles until the slurry reaches a preset viscosity range, and obtaining coating slurry; and preparing a proton exchange membrane, coating the proton exchange membrane with the coating slurry through slit extrusion type coating, and performing drying treatment to obtain the anode catalyst layer. The anode catalyst layer prepared by combining slurry thickening treatment and slit extrusion coating has a three-phase interface with uniform loading capacity and high efficiency, the defects of bubbles, vertical strips, sawteeth and the like are reduced, cracks are not generated, the coating efficiency is high, slurry is saved, and gap coating can be realized.

Description

technical field [0001] The invention relates to the technical field of anode catalyst layers, in particular to an anode catalyst layer and a method for preparing the anode catalyst layer. Background technique [0002] In the prior art, the electrolytic deionized water anode catalyst layer can be prepared by electrochemical deposition, ultrasonic spraying and transfer printing, but these preparation methods have some shortcomings. The electrochemical deposition method has different catalyst particle sizes and particles Large diameter, serious agglomeration, uneven distribution and other disadvantages; ultrasonic spraying method has problems such as high energy consumption, low coating efficiency, serious slurry waste, and difficulty in achieving edge coating; transfer printing method has complex process flow, transfer substrate Expensive, incomplete transfer, low membrane utilization and other problems. From a manufacturing standpoint, direct film coating using the slot extr...

Claims

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Application Information

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IPC IPC(8): C25B11/075C25B11/077C25B11/091C25B11/093C25B11/02C25B1/04B05D7/24
CPCC25B11/075C25B11/0775C25B11/091C25B11/093C25B11/02C25B1/04B05D7/24Y02E60/36
Inventor 万岁阁徐少轶樊建涛李辉
Owner 氢辉能源(深圳)有限公司
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