High-yield fuel cell catalytic electrode coating production method and equipment thereof

Abstract

The invention discloses a high-yield fuel cell catalytic electrode coating production method and device. The method comprises the following steps: S1, adding solid catalyst particles and perfluorosulfonic acid resin liquid into deionized water, a low-boiling-point alcohol solvent and a slow drying agent, performing dispersion and defoaming, and obtaining a catalyst slurry; S2, selecting a first preset process to coat one side of a proton exchange membrane, and completely performing drying to form a catalyst layer A; S3, coating the catalyst slurry on a support body, and forming a support complex with a gel-state layer through multiple times of functional spraying treatment; and S4, carrying out hot-pressing transfer on the support complex with the gel-state layer and the other surface of the proton exchange membrane, and transferring the gel-state layer on the support complex to the other surface of the proton exchange membrane to obtain a catalytic electrode. in the preparation process of the membrane electrode, the problems of proton exchange membrane swelling, catalyst layer falling and the like are solved in a hot-pressing transfer mode, the rate of finished products is high, and the electrochemical performance of the catalyst layer is excellent.

Description

technical field [0001] The invention belongs to the field of fuel cells, and in particular relates to a production method for coating catalytic electrodes of fuel cells with high yield. Background technique [0002] A fuel cell is an electrochemical cell whose main principle is to convert the chemical energy in fuel and oxidant directly into electrical energy through oxidation-reduction reactions. As an important branch of the fuel cell field, the proton exchange membrane fuel cell (PEMFC) not only has the general characteristics of fuel cells such as high energy conversion efficiency and environmental friendliness, but also has fast start-up speed at room temperature, small size, no electrolyte loss, It has outstanding advantages such as easy drainage, long life, high specific power and specific energy. It is not only suitable for the construction of distributed power stations, but also suitable for mobile power supply. It is a new type of mobile power supply for military...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a production method for coating the catalytic electrode of a high-yield fuel cell. In the preparation process of the catalytic layer, problems such as swelling of the proton exchange membrane and falling of the catalytic layer are solved by means of transfer, and the catalytic layer is subjected to a A series of treatments make the catalytic layer not only have a high transfer rate, but also have excellent electrochemical performance

Images