Production method of CCM

Abstract

The invention provides a production method of a CCM, and belongs to the technical field of membrane electrode production. The production method comprises the following steps: transferring a pluralityof separated first catalyst sheets on a first support membrane in conveying at intervals, and transferring the first catalyst sheets on the first support membrane in conveying to a first surface of aproton exchange membrane in conveying; detecting position information of two adjacent first catalyst sheets on the first support membrane; calculating the real-time distance between two adjacent firstcatalyst sheets according to the position information, and adjusting the relative speed of the first support membrane and the proton exchange membrane when the difference between the real-time distance and the preset distance is beyond the preset range, so the difference between the real-time distance and the preset distance is within the preset range. According to the production method, the distance between two adjacent catalyst sheets finally transferred to the same surface of the proton exchange membrane can be adjusted, so the production of the CCM can be more accurate.

Description

technical field [0001] The present application relates to the technical field of membrane electrode production, in particular, to a production method of CCM. Background technique [0002] The preparation method of CCM type membrane electrode includes transfer printing method and direct spray coating method, wherein the transfer printing method is to spray / print the slurry onto other media, and then transfer to the proton exchange membrane to form a catalytic layer. Among them, the schematic diagram of the structure of the catalytic membrane before the transfer is as follows: figure 1 As shown, a plurality of interval catalyst sheet layers 2 are set on the catalytic protective membrane 1 . [0003] At present, the process of preparing 3-CCM membrane electrodes by transfer printing is mainly to coat the cathode and anode catalytic coatings on the base medium intermittently, and then transfer them to the proton membrane, and coat the cathode and anode catalytic coatings on the...

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Problems solved by technology

[0003] At present, the process of preparing 3-CCM membrane electrodes by transfer printing is mainly to coat the cathode and anode catalytic coatings on the base medium intermittently, and then transfer them to the proton membrane, and coat the cathode and anode catalytic coatings on the base medium for detection. After printing, if the distance between two adjacent catalytic coatings is not uniform, after transfer printing, the distance between two adjacent catalytic coatings on the proton exchange membrane will be inconsistent

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