Method for coating proton exchange membrane of fuel cell and coating device thereof

A technology of proton exchange membranes and fuel cells, which can be applied to devices for coating liquid on the surface, fuel cells, circuits, etc., and can solve problems such as waste of starting and stopping points of coating

Pending Publication Date: 2020-02-28
深圳市亚微新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a method for coating proton exchange membranes of fuel cells and a coating device thereof, to solve the waste problem before and after the start and end of coating, and to realize gap coating

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  • Method for coating proton exchange membrane of fuel cell and coating device thereof
  • Method for coating proton exchange membrane of fuel cell and coating device thereof

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Embodiment Construction

[0018] see figure 1 and figure 2 , the present invention provides a method for fuel cell proton exchange membrane coating, in which at least one expandable element 2 (in this embodiment There are two expandable elements 2, obviously, the expandable element 2 can be one, or any number of more than two), the cylinder 3 located outside the slit coating die head 1 and the expandable The element 2 communicates, and when the cylinder 3 presses the fluid into the expandable element 2, the expandable element 2 is expanded to quickly squeeze out the coating liquid; when the cylinder 3 presses the fluid from the expandable element 2 When sucked out, the expandable member 2 is contracted, thereby contracting the coating liquid from the coating port 12 of the slot coating die 1. The cylinder block 3 in the present invention can be an air cylinder or an oil cylinder, selected according to different fluids.

[0019] When the number of expandable elements 2 is more than two, the inner di...

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Abstract

The invention discloses a method for coating a proton exchange membrane of a fuel cell and a coating device thereof. The method comprises the steps that at least one expandable element is arranged inan inner cavity, for containing a coating liquid, of a slit coating die head, wherein the part, located outside the slit coating die head, of a cylinder body is in communication with the expandable element; the expandable element is expanded when the cylinder body presses a fluid into the expandable element, and thus the coating liquid is rapidly extruded; and the expandable element is contractedwhen the cylinder body sucks the fluid out of the expandable element, and thus the coating liquid is contracted from a coating opening of the slit coating die head. The method and the device thereof can solve the problem of coating liquid waste occurring before and after the start and stop points of coating, and achieve the purpose of gap coating.

Description

technical field [0001] The invention belongs to the technical field of coating machine accessories, and in particular relates to a method for coating a fuel cell proton exchange membrane and a coating device thereof. Background technique [0002] The membrane electrode is the core component of the fuel cell and the place where the electrochemical reaction occurs inside the battery. It is composed of an ion exchange membrane, a catalytic layer, and a gas diffusion layer. Among them, according to the different preparation processes of the catalytic layer, the membrane electrode structure includes the first generation of gas diffusion electrodes, the second generation of CCM electrodes and the third generation of thin layer ordered structure electrodes, etc. At present, the most widely used is still The second generation CCM type membrane electrode. The preparation methods of CCM type electrodes include transfer printing method and direct coating method, wherein the transfer p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05C5/02H01M8/1004
CPCB05C5/0258H01M8/1004Y02E60/50
Inventor 黄斌卿
Owner 深圳市亚微新材料有限公司
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