Microporous layer coating method and device suitable for sheet GDL production
A coating device and microporous layer technology are applied in the field of microporous layer coating methods and devices produced by sheet GDL, which can solve the problems of poor continuity of scrape coating production and insufficient coating amount of screen printing, etc., and achieve reduction of surplus Ink cleaning steps to achieve continuity and high production efficiency
Pending Publication Date: 2022-03-18
浙江唐锋能源科技有限公司
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The purpose of the present invention is to provide a microporous layer coating method suitable for the production of sheet GDL, which solves the problem of insufficient single coating amount of screen printing, and solves the problem of poor continuity of scrape coating production
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0034] Example: such as figure 1 and figure 2 As shown, a microporous layer coating device suitable for sheet GDL production includes a workbench 1, a gasket 2 arranged on the workbench 1, a first hollow area 201 arranged on the gasket 2, and a The pressing plate 3 above the gasket 2, the second hollow area 301 arranged on the pressing plate 3, the lifting mechanism 5 driving the pressing plate 3 to move up and down, the scraper 4 arranged above the pressing plate 3 and the translation mechanism 6 driving the scraper 4 to move.
[0035] Both the first hollow area 201 and the second hollow area 301 are rectangular areas, and the area of the second hollow area 301 is smaller than that of the first hollow area 201 .
[0036] The gasket 2 has a thickness of 150-250 μm, is laid flat on the table top of the workbench 1, and is fixed on the table top of the workbench 1 by conventional claws or card edges. The thickness of the pressing plate 3 can be selected according to the act...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| Thickness | aaaaa | aaaaa |
| Thickness | aaaaa | aaaaa |
Login to View More
Abstract
The invention relates to a microporous layer coating method and device suitable for sheet GDL production, and the method comprises the following steps: laying a gasket on the table top of a workbench, and arranging a first hollow area in the middle of the gasket; paving the carbon paper in the first hollow area of the gasket; laying a pressing plate above the gasket, wherein the pressing plate is provided with a second hollow area; the single side of the second hollow area and the front side of the scraper are filled with the slurry; a pressing plate is pressed downwards through a mechanical structure to make contact with the first hollowed-out area; scraping the surface of the pressing plate with a scraper, and scraping the slurry to be flat; the pressing plate is lifted upwards through a mechanical structure, and redundant waste materials are taken away; and drying and sintering the coated base material to obtain the gas diffusion layer. The thickness of the coated wet film can be controlled by changing the thickness of the pressing plate, and then the thickness of the final microporous layer is controlled; the slurry is not damaged in the coating process; the residual ink can be taken away by the pressing plate, so that the step of cleaning the residual ink during blade coating of the sheet is reduced, and the continuity of the production process is realized.
Description
technical field [0001] The invention relates to the technical field of fuel cells, in particular to a microporous layer coating method and device suitable for sheet GDL production. Background technique [0002] The gas diffusion layer is one of the key components of the fuel cell, which plays an important role in mass transfer, conductivity and support. The gas diffusion layer is mainly made of conductive carbon black slurry uniformly coated on the surface of carbon fiber paper after hydrophobic treatment, and then sintered and solidified at high temperature. [0003] Traditional coating methods include screen printing, electrospinning, spray printing coating and coating film forming methods. These coating methods have certain defects: the screen printing process can obtain a microporous layer with a smooth surface, but due to the The limitation of the mesh leads to a small amount of ink in a single coating, and it takes two or even three coatings to achieve the required th...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): H01M4/88
CPCH01M4/8807Y02E60/50
Inventor 朱凤鹃王一鑫韩爱娣王献坡沈逸东朱梦怡
Owner 浙江唐锋能源科技有限公司