Batch production method of fuel cell membrane electrode

A fuel cell membrane, mass production technology, applied in battery electrodes, circuits, electrical components, etc., can solve problems such as low efficiency, unfavorable mass production, damage to membrane electrodes, etc. better sex effect

Active Publication Date: 2018-08-03
河南豫氢动力有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has low efficiency, is not conducive to mass production, and may damage the membrane electrode during the detection process.

Method used

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  • Batch production method of fuel cell membrane electrode
  • Batch production method of fuel cell membrane electrode
  • Batch production method of fuel cell membrane electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0074] A method for batch production of fuel cell membrane electrodes, specifically comprising the following steps:

[0075] (1) prepare catalyst slurry A, get catalyst particle and The monomer solution (perfluorosulfonic acid solution) is dispersed in a mixed solvent by ultrasonic waves and high-speed stirring. The mixed solvent includes three components: isopropanol, deionized water and 2-ethoxyethanol. Vacuum defoaming process is adopted The ionomer is filled and adsorbed into the micropores of the catalyst and its carrier particles to obtain a catalyst slurry A; wherein, in terms of mass ratio, the catalyst particles: Monomer solution: isopropanol: deionized water: 2-ethoxyethanol = (8-10): (3-5): (38-45): (36-43): (5-10) prepared.

[0076] (2) In the anode / cathode preparation area 1 of the membrane electrode, the catalyst slurry A is coated on the membrane electrode by methods such as spray coating, scrape coating, slit coating or heat transfer printing, and three laye...

Embodiment 1-1

[0090] A method for batch production of fuel cell membrane electrodes, specifically comprising the following steps:

[0091] (1) prepare catalyst slurry A, get catalyst particle and The monomer solution (perfluorosulfonic acid solution) is dispersed in a mixed solvent by ultrasonic waves and high-speed stirring. The mixed solvent includes three components: isopropanol, deionized water and 2-ethoxyethanol. Vacuum defoaming process is adopted The ionomer is filled and adsorbed into the micropores of the catalyst and its carrier particles to obtain a catalyst slurry A; wherein, in terms of mass ratio, the catalyst particles: Monomer solution: isopropanol: deionized water: 2-ethoxyethanol=8:3:38:36:5.

[0092] (2) In the anode / cathode preparation area 1, the catalyst slurry A is coated on the membrane electrode by methods such as spray coating, doctor blade coating, slit coating or hot press transfer printing, and a three-layer anode catalytic layer is prepared;

[0093] (3) T...

Embodiment 1-2

[0100] A method for batch production of fuel cell membrane electrodes, specifically comprising the following steps:

[0101] (1) prepare catalyst slurry A, get catalyst particle and The monomer solution (perfluorosulfonic acid solution) is dispersed in a mixed solvent by ultrasonic waves and high-speed stirring. The mixed solvent includes three components: isopropanol, deionized water and 2-ethoxyethanol. Vacuum defoaming process is adopted The ionomer is filled and adsorbed into the micropores of the catalyst and its carrier particles to obtain a catalyst slurry A; wherein, in terms of mass ratio, the catalyst particles: Monomer solution: isopropanol: deionized water: 2-ethoxyethanol = 10:5:45:43:10.

[0102] (2) In the anode / cathode preparation area 1, the catalyst slurry A is coated on the membrane electrode by methods such as spray coating, doctor blade coating, slit coating or hot press transfer printing, and a three-layer anode catalytic layer is prepared;

[0103] (...

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Abstract

The invention relates to a batch production method of a fuel cell membrane electrode. The batch production method comprises the following steps of (1) preparing a positive electrode catalyst layer membrane electrode in a membrane electrode positive electrode preparation region; (2) transferring the prepared membrane electrode into a CCD detection region, putting on a transparent glass plate tidily, and performing membrane electrode catalyst layer surface appearance detection; (3) transferring the prepared qualified membrane electrode into a drying region, and performing dust-free drying on thecatalyst layer by a tunnel heating furnace; and (4) transferring the membrane electrode into a negative electrode preparation region, and repeatedly executing the steps of (1)-(3) to prepare the fuelcell membrane electrode CCM with relatively high consistency. Compared with the prior art, the batch production method is simple in process and efficient and reliable; screening is performed in the initial stage of membrane electrode assembly (MEA) manufacturing, so that the manufacturing process of the CCM is optimized, the percent of pass of the CCM product is improved, and batch production canbe performed favorably; and in addition, the produced products are higher in consistency, the production cost of the fuel cell is lowered effectively, and the batch production method is suitable fora high-current-discharge fuel cell vehicle-mounted electric pile.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a batch production method of fuel cell membrane electrodes. Background technique [0002] A proton exchange membrane fuel cell (hereinafter referred to as a fuel cell) is a power generation device that directly converts chemical energy into electrical energy by using the electrochemical reaction of fuel (hydrogen) and oxidant (usually air) without the Carnot cycle. The fuel cell membrane electrode assembly (MEA) composed of proton exchange membrane and noble metal catalyst is the core component of the fuel cell. During the operation of the fuel cell, the MEA needs to effectively separate the fuel from the oxidant to prevent the direct mixing of the fuel and the oxidant. The chemical reaction is not the electrochemical reaction, and in extreme cases, it may even cause an explosion, or the mutual leakage of the fuel and the oxidant will cause the power generation efficiency of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/88G01N21/88G01B11/30
CPCG01B11/306G01N21/8851H01M4/8828H01M4/8875H01M4/8882Y02E60/50
Inventor 邵航宇陶少龙
Owner 河南豫氢动力有限公司
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