Proton exchange membrane fuel cell ccm membrane electrode and preparation method thereof

A proton exchange membrane, fuel cell technology, applied in fuel cells, battery electrodes, circuits, etc., can solve the problems of catalyst utilization, proton membrane curling, swelling wrinkles, imperfections, etc.

Inactive Publication Date: 2018-12-25
东莞众创新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the GDL method, most of them are prepared by pneumatic spraying method and ultrasonic spraying method. The catalyst solution is evenly sprayed on the proton membrane under certain environmental conditions. However, when the catalyst solution directly contacts the proton membrane, the swelling and wrinkling of the membrane will occur, resulting

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  • Proton exchange membrane fuel cell ccm membrane electrode and preparation method thereof

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Example Embodiment

[0028] The present invention provides a method for preparing a CCM membrane electrode of a proton exchange membrane fuel cell, which is mainly used to prepare a membrane electrode in a fuel cell, namely ccm (ccm refers to a catalyst / proton exchange prepared by coating a catalyst in a fuel cell on both sides of a proton exchange membrane Membrane module). The preparation method of the ccm membrane electrode of the proton exchange membrane fuel cell includes the following steps:

[0029] S110: Provide catalyst slurry, two release membranes, and proton exchange membranes.

[0030] In one embodiment, the catalyst slurry includes Pt / C catalyst, Nafion solution, water, solvent, and dispersant. The Pt / C catalyst is a platinum-carbon catalyst, that is, platinum nanoparticles are supported on a carbon material. Generally, the carbon material is Surface modified carbon nanotubes, Nafion solution is a perfluorosulfonic acid polymer solution. The preparation method of the catalyst slurry inc...

Example Embodiment

[0061] Example 1

[0062] The preparation method of the CCM membrane electrode of the proton exchange membrane fuel cell of this embodiment includes the following steps:

[0063] S110: Provide catalyst slurry, two release membranes, and proton exchange membranes. The PET release film is selected as the release film, and the thickness of the PET release film is selected as 0.08mm.

[0064] The preparation method of the catalyst slurry includes the following steps:

[0065] Provide Pt / C catalyst, Nafion solution, water, solvent and dispersant. The mass content of Pt in the Pt / C catalyst is 40%, the mass content of Nafion in the Nafion solution is 5%, the dispersant is isopropanol, and the solvent is glycerin .

[0066] The Nafion solution and the Pt / C catalyst were mixed in a mass ratio of 1:2; after the Nafion solution and the Pt / C catalyst were mixed, stirred uniformly to obtain solution I.

[0067] Mix Nafion solution, isopropanol, and glycerin at a mass ratio of 1:1:6. After mixing N...

Example Embodiment

[0074] Example 2

[0075] The preparation method of the CCM membrane electrode of the proton exchange membrane fuel cell of this embodiment includes the following steps:

[0076] S110: Provide catalyst slurry, two release membranes, and proton exchange membranes. The PET release film is selected as the release film, and the thickness of the PET release film is selected as 0.07mm.

[0077] The preparation method of the catalyst slurry includes the following steps:

[0078] Provide Pt / C catalyst, Nafion solution, water, solvent and dispersant. The mass content of Pt in the Pt / C catalyst is 40%, the mass content of Nafion in the Nafion solution is 5%, the dispersant is isopropanol, and the solvent is glycerin .

[0079] The Nafion solution and the Pt / C catalyst were mixed at a mass ratio of 1:2.5; after the Nafion solution and the Pt / C catalyst were mixed, stirred evenly to obtain solution I.

[0080] Mix Nafion solution, isopropanol, and glycerin in a mass ratio of 1:2:4. After mixing Na...

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Abstract

The invention relates to a preparation method of a ccm membrane electrode of a proton exchange membrane fuel cell and a product thereof. The preparation method comprises the following steps: providinga catalyst slurry, a two-release membrane and a proton exchange membrane; A release film is placed on a coating machine, and a catalyst slurry is coated on the release film by a coating tool to obtain a cathode transfer medium; placing another release film on a coating machine, coating catalyst slurry on the release film by using a coating tool, and obtaining an anode transfer medium; drying a cathode transfer medium and an anode transfer medium to obtain a dried cathode transfer medium and an anode transfer medium; placing the dried cathode transfer medium and the anode transfer medium on both sides of the proton exchange membrane respectively, and then hot-pressed to transfer, and then the release membranes in the cathode transfer medium and the anode transfer medium are stripped off respectively to obtain the ccm membrane electrodes of the proton exchange membrane fuel cell. By using the release film as the transfer medium, the catalyst transfer efficiency is high and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of fuel cell preparation, in particular to a CCM membrane electrode of a proton exchange membrane fuel cell and a preparation method thereof. Background technique [0002] Fuel cell technology is currently on the cusp of large-scale market application, and membrane electrodes are the core components of fuel cells, and the performance of the cells is directly affected by them. [0003] At present, there are various membrane electrode preparation technologies, which are mainly divided into GDE method and GDL method. The GDE method is to coat the catalyst on the gas diffusion layer to form a catalytic layer, and then use hot pressing technology to coat the gas diffusion layer, catalyst layer, and proton exchange membrane. Combined together to form a membrane electrode; the GDL method is to coat the catalyst on the proton exchange membrane to form a ccm (catalyst coated membrane, which refers to the catalyst / pro...

Claims

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Application Information

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IPC IPC(8): H01M4/86H01M4/88H01M8/1004
CPCH01M4/86H01M4/88H01M8/1004Y02E60/50Y02P70/50
Inventor 陈丽丽曾嘉年徐伟强
Owner 东莞众创新能源科技有限公司
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