Electrochemical cell
US-2024332559-A1 · Oct 3, 2024 · US
Manufacturing method of gas diffusion layer with microporous layer, and manufacturing method of fuel cell
US2021184224A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2021184224-A1 |
| Application number | US-202017022297-A |
| Country | US |
| Kind code | A1 |
| Filing date | Sep 16, 2020 |
| Priority date | Dec 11, 2019 |
| Publication date | Jun 17, 2021 |
| Grant date | — |
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Abstract
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A manufacturing method of a gas diffusion layer with a microporous layer includes coating a gas diffusion layer containing titanium with a precursor containing an electroconductive material, a water-repellent resin, and a polyethylene oxide, and heating the gas diffusion layer coated with the precursor to form a microporous layer containing the electroconductive material and the water-repellent resin on a surface of the gas diffusion layer. The heating atmosphere is a non-oxidation atmosphere where an oxygen concentration is no more than 0.3% by volume.
First claim
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What is claimed is: 1 . A manufacturing method of a gas diffusion layer with a microporous layer, the method comprising: coating the gas diffusion layer containing titanium with a precursor containing an electroconductive material, a water-repellent resin, and a polyethylene oxide; and heating the gas diffusion layer coated with the precursor in a non-oxidation atmosphere where an oxygen concentration is no more than 0.3% by volume to form the microporous layer containing the electroconductive material and the water-repellent resin on a surface of the gas diffusion layer. 2 . The manufacturing method according to claim 1 , wherein a heating temperature is no lower than 350° C. and no higher than 400° C. 3 . The manufacturing method according to claim 1 , wherein the non-oxidation atmosphere is an inert gas atmosphere where the oxygen concentration is no more than 0.3% by volume. 4 . The manufacturing method according to claim 1 , further comprising: subjecting the gas diffusion layer to water-repelling treatment, prior to coating the gas diffusion layer with the precursor. 5 . A manufacturing method of a fuel cell, the method comprising: disposing a catalyst layer on a microporous layer side of the gas diffusion layer with the microporous layer manufactured by the manufacturing method according to claim 1 ; and disposing a separator on a gas diffusion layer side of the gas diffusion layer with the microporous layer.
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Classifications
Manufacturing or production processes characterised by the final manufactured product · CPC title
in the form of layered or coated products · CPC title
- H01M8/0232Primary
Metals or alloys · CPC title
- H01M4/8807Primary
Gas diffusion layers · CPC title
characterised by membrane-electrode assemblies [MEA] (H01M8/12 takes precedence) · CPC title
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- What does patent US2021184224A1 cover?
- A manufacturing method of a gas diffusion layer with a microporous layer includes coating a gas diffusion layer containing titanium with a precursor containing an electroconductive material, a water-repellent resin, and a polyethylene oxide, and heating the gas diffusion layer coated with the precursor to form a microporous layer containing the electroconductive material and the water-repellent…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd, Toho Titanium Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01M8/0232. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Jun 17 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).