Electrochemical cell
US-2024332559-A1 · Oct 3, 2024 · US
Porous body for fuel cell
US11289715B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11289715-B2 |
| Application number | US-202016801909-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 26, 2020 |
| Priority date | Dec 16, 2016 |
| Publication date | Mar 29, 2022 |
| Grant date | Mar 29, 2022 |
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- Title
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- Abstract
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- First independent claim
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Abstract
Official abstract text for this publication.
A porous body for a fuel cell is interposed between a membrane-electrode assembly (MEA) and a bipolar plate to form a gas channel through which a reactant gas flows in a predetermined direction, the porous body including: a main body disposed to contact the bipolar plate; and a plurality of ribs each including a land portion disposed to contact the MEA and a connecting portion connecting the land portion to the main body, in which an area of the land portion is gradually narrowed from an upstream part to a downstream part of the gas channel.
First claim
Opening claim text (preview).
What is claimed is: 1. A porous body for a fuel cell, which is interposed between a membrane-electrode assembly (MEA) and a bipolar plate to form a gas channel through which a reactant gas flows in a predetermined direction, the porous body comprising: a main body disposed to contact the bipolar plate; and a plurality of ribs each including a land portion disposed to contact the MEA and a connecting portion connecting the land portion to the main body, wherein the gas channel includes a power generation section facing the MEA and a diffusion section located above the power generation section in an upstream part of the gas channel, and an area of a land portion of a rib located in the diffusion section is narrower in a direction of gas flow than an area of a land portion of a rib located in the power generation section. 2. The porous body according to claim 1 , wherein the gas channel further includes an exhaust section located below the power generation section in a downstream part of the gas channel, and an area of a land portion of a rib located in the exhaust section is narrower in the direction of gas flow than the area of the land portion of the rib located in the power generation section. 3. The porous body according to claim 2 , wherein the connecting portion is inclined at a predetermined angle of inclination with respect to the direction of gas flow, and an angle of inclination is higher in the ribs located in the diffusion section and the exhaust section than in the rib located in the power generation section. 4. The porous body according to claim 1 , wherein a gas diffusion layer is attached to the MEA, and the porous body is interposed between the gas diffusion layer and the bipolar plate.
Assignees
Inventors
Classifications
Porous and characterised by the material · CPC title
Arrangements for joining electrodes, reservoir layers, heat exchange units or bipolar separators to each other (H01M8/0271 takes precedence) · CPC title
- H01M8/0258Primary
characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant · CPC title
Vias, i.e. connectors passing through the separator material · CPC title
- H01M8/0265Primary
the reactant or coolant channels having varying cross sections · CPC title
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- What does patent US11289715B2 cover?
- A porous body for a fuel cell is interposed between a membrane-electrode assembly (MEA) and a bipolar plate to form a gas channel through which a reactant gas flows in a predetermined direction, the porous body including: a main body disposed to contact the bipolar plate; and a plurality of ribs each including a land portion disposed to contact the MEA and a connecting portion connecting the la…
- Who is the assignee on this patent?
- Hyundai Motor Co Ltd, Kia Motors Corp
- What technology area does this patent fall under?
- Primary CPC classification H01M8/0258. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 29 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). 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).