Method and system for manufacturing membrane-electrode-gas diffusion layer assembly for fuel cell
US-2024136539-A1 · Apr 25, 2024 · US
Gas diffusion electrode and fuel cell
US2018375105A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2018375105-A1 |
| Application number | US-201615777447-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 16, 2016 |
| Priority date | Dec 24, 2015 |
| Publication date | Dec 27, 2018 |
| Grant date | — |
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Abstract
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A gas diffusion electrode in which a microporous layer is provided on at least one surface of a conductive porous substrate, wherein the areas obtained by dividing the cross section perpendicular to the plane of the microporous layer into three equal parts in the thickness direction are a first area, a second area, and a third area, with respect to the conductive porous substrate side, the fluorine strength of the third area being 0.8 to 1.2 times the fluorine strength of the second area.
First claim
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1 . A gas diffusion electrode comprising a microporous layer on at least one surface of an electrically conductive porous substrate, wherein provided that regions obtained by dividing a cross-section perpendicular to the surface of the microporous layer into three equal parts in a thickness direction are a first region, a second region and a third region from a side of the electrically conductive porous substrate, the fluorine intensity of the third region is 0.8 to 1.2 times the fluorine intensity of the second region. 2 . A gas diffusion electrode comprising a microporous layer on at least one surface of an electrically conductive porous substrate, wherein provided that regions obtained by dividing a cross-section perpendicular to the surface of the microporous layer into three equal parts in a thickness direction are a first region, a second region and a third region from a side of the electrically conductive porous substrate, the fluorine Intensity of the third region is 0.8 to 1.2 times the fluorine intensity of the first region. 3 . The gas diffusion electrode according to claim 1 , wherein the fluorine intensity of the third region is 0.8 to 0.98 time the fluorine intensity of the second region. 4 . The gas diffusion electrode according to claim 1 , wherein the fluorine Intensity of the third region is 0.8 to 1.0 time the fluorine Intensity of the first region. 5 . The gas diffusion electrode according to claim 1 , wherein the fluorine intensity of the third region is 0.8 to 1.0 time the fluorine intensity of the second region, and 0.8 to 1.0 time the fluorine Intensity of the first region. 6 . The gas diffusion electrode according to claim 1 , wherein the fluorine intensity/carbon intensity ratio of the third region is 1.0 to 1.3 times the fluorine Intensity/carbon intensity ratio of the second region where the fluorine intensity/carbon intensity ratio is a ratio of the fluorine intensity to the carbon intensity (fluorine intensity/carbon intensity). 7 . The gas diffusion electrode according to claim 1 , wherein the fluorine intensity/carbon intensity ratio of the third region is 1.0 to 1.3 times the fluorine intensity/carbon intensity ratio of the first region where the fluorine intensity/carbon intensity ratio is a ratio of the fluorine intensity to the carbon intensity (fluorine intensity/carbon intensity). 8 . The gas diffusion electrode according to claim 1 , wherein the microporous layer contains carbon black, the carbon black in the third region has a structure index of less than 3.0, and the carbon black in the first region has a structure index of 3.0 or more. 9 . A fuel cell comprising the gas diffusion electrode according to claim 1 .
Assignees
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Classifications
- H01M4/8605Primary
Porous electrodes · CPC title
Gas diffusion layers · CPC title
Carbon-based electrodes · CPC title
in the form of layered or coated products · CPC title
- H01M8/0234Primary
Carbonaceous material · CPC title
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- What does patent US2018375105A1 cover?
- A gas diffusion electrode in which a microporous layer is provided on at least one surface of a conductive porous substrate, wherein the areas obtained by dividing the cross section perpendicular to the plane of the microporous layer into three equal parts in the thickness direction are a first area, a second area, and a third area, with respect to the conductive porous substrate side, the fluo…
- Who is the assignee on this patent?
- Toray Industries
- What technology area does this patent fall under?
- Primary CPC classification H01M4/8605. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Dec 27 2018 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).