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Hydrogen fuel cell, preparation method of hydrogen fuel cell, clamp for preparing hydrogen fuel cell and use method of clamp

A fuel cell and fixture technology, which is used in fuel cells, fuel cell additives, electrolyte treatment of solid electrolyte cells, etc., can solve the problem that hydrogen fuel cells cannot effectively solve the deformation resistance, water flooding resistance, and membrane electrode structure. damage and other problems, to achieve the effect of reducing the structural damage of the catalytic layer, reducing the flooding, and reducing the dispensing process.

Active Publication Date: 2020-12-29
FAW JIEFANG AUTOMOTIVE CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it will cause dislocation during the forming process and cause damage to the membrane electrode structure, and there are still problems of water flooding and deformation resistance.
[0007] None of the above hydrogen fuel cells can effectively solve the problems of deformation resistance, water flooding and membrane electrode damage.

Method used

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  • Hydrogen fuel cell, preparation method of hydrogen fuel cell, clamp for preparing hydrogen fuel cell and use method of clamp
  • Hydrogen fuel cell, preparation method of hydrogen fuel cell, clamp for preparing hydrogen fuel cell and use method of clamp
  • Hydrogen fuel cell, preparation method of hydrogen fuel cell, clamp for preparing hydrogen fuel cell and use method of clamp

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preparation example Construction

[0114] In another specific embodiment, the present invention provides a method for preparing a hydrogen fuel cell using the above fixture, such as Figure 4 Shown, described preparation method specifically comprises:

[0115] (1) The cathode catalyst slurry and the anode catalyst slurry are applied to the upper and lower surfaces of the proton exchange membrane 10 by spray coating, transfer printing or slit coating, and the cathode catalyst layer 11 and the cathode catalyst layer 11 are formed respectively after drying. The anode catalyst layer 9 is a three-layer membrane electrode.

[0116] (II) Place the lower inner layer frame 5 in the lower plate 18 of the fixture, place the three-layer membrane electrode centered on the lower inner layer frame 5, wherein the cathode catalytic layer 11 is located on the side of the lower inner layer frame 5, and then place the upper inner layer The frame 4 is placed along the outer edge of the three-layer membrane electrode, and finally t...

Embodiment 1

[0120] This embodiment provides a hydrogen fuel cell, based on the hydrogen fuel cell provided in the specific embodiment, wherein the outer dimension of the plane profile of the catalytic layer is less than 1mm of the outer dimension of the plane profile of the proton exchange membrane 10; the gas diffusion layer The outer dimension of the plane profile is less than 2mm of the outer dimension of the plane profile of the catalytic layer; the inner dimension of the plane profile of the upper inner frame and the lower inner frame is smaller than the outer dimension 2mm of the plane profile of the catalytic layer; the upper outer frame 3 and The inner dimension of the plane outline of the lower outer frame 6 is smaller than the outer dimension of the plane outline of the gas diffusion layer by 2mm; the material of the upper outer frame 3 and the lower outer frame 6 is ethylene glycol phthalate; the upper inner frame 4 and the lower inner frame 5 are made of ethylene glycol phthala...

Embodiment 2

[0141] This embodiment provides a hydrogen fuel cell, based on the hydrogen fuel cell provided in the specific embodiment, wherein the outer dimension of the planar profile of the catalytic layer is 1.5mm smaller than the outer dimension of the planar profile of the proton exchange membrane 10; The outer dimension of the plane profile of the layer is 1.5mm smaller than the outer dimension of the plane profile of the catalytic layer; the inner dimension of the plane profile of the upper inner layer frame and the lower inner layer frame is smaller than the outer dimension of the catalytic layer plane profile of 1.5mm; the upper outer layer The inner dimension of the plane profile of the frame 3 and the lower outer frame 6 is smaller than the outer dimension of the plane profile of the gas diffusion layer by 1mm; the material of the upper outer frame 3 and the lower outer frame 6 is polyethylene naphthalate; The upper inner frame 4 and the lower inner frame 5 are made of polyimide...

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Abstract

The invention provides a hydrogen fuel cell, a preparation method of the hydrogen fuel cell, a clamp for preparing the hydrogen fuel cell and a use method of the clamp. The hydrogen fuel cell comprises an anode plate, a five-layer membrane electrode assembly and a cathode plate which are sequentially stacked, the five-layer membrane electrode assembly comprises a five-layer membrane electrode anda sealing structure arranged along the outer edge of the five-layer membrane electrode, and the sealing structure comprises an upper outer-layer frame, an upper inner-layer frame, a lower inner-layerframe and a lower outer-layer frame which are arranged in a stacked mode. The clamp comprises an upper clamp plate and a lower clamp plate, wherein the upper clamp plate is provided with a protrudingstructure and a stepped slope and is embedded with the lower clamp plate. According to the invention, the thicknesses of the inner-layer frames are different, and the thicker inner-layer frame is arranged on the cathode side, so that the drainage capacity of a cathode is enhanced, and water logging can be effectively reduced; the clamp is used for double-layer frame sealing and integrated packaging, the forming process is simple, the overall deformation resistance is high, and damage to membrane electrode materials and structures due to overpressure, dislocation and other problems in the forming process can be effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, and in particular relates to a hydrogen fuel cell, a preparation method thereof, a jig for preparing the same, and a use method. Background technique [0002] A hydrogen fuel cell is an energy conversion device that converts chemical energy into electrical energy. It is usually assembled by several single cells in series, and each single cell is composed of a membrane electrode in the middle and cathode and anode plates on both sides of the membrane electrode. composition. [0003] In the hydrogen fuel cell stack, the membrane electrode needs to be sealed and combined with the adjacent plate to ensure that the air in the cathode and the hydrogen in the anode will not mix and leak. Because the proton exchange membrane is very thin and soft, it is easily wrinkled by changes in environmental temperature and humidity, and the catalytic layer and gas diffusion layer are both porous structures. Con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/0273H01M8/04291H01M8/22H01M8/1004
CPCH01M8/0273H01M8/04291H01M8/22H01M8/1004Y02E60/50Y02P70/50
Inventor 崔新然张克金米新艳李军泽于力娜杨帅
Owner FAW JIEFANG AUTOMOTIVE CO
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