Membrane electrode assembly, electrochemical cell, and electrochemical device
US-2019071784-A1 · Mar 7, 2019 · US
Membrane electrode assembly, electrochemical cell, stack and electrolyzer
US2024117511A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2024117511-A1 |
| Application number | US-202318459734-A |
| Country | US |
| Kind code | A1 |
| Filing date | Sep 1, 2023 |
| Priority date | Oct 3, 2022 |
| Publication date | Apr 11, 2024 |
| Grant date | — |
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- Title
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Abstract
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A membrane electrode assembly of an embodiment includes: a first electrode including a first diffusion layer, and a first catalyst layer; a second electrode for generating hydrogen, the second electrode including a second diffusion layer, a second catalyst layer including a porous catalyst layer including a porous precious metal or sheet-like precious metal, and a hydrophobic moisture management layer provided between the second catalyst layer and the second diffusion layer, the hydrophobic moisture management layer including carbon particles and carbon fibers, a weight of the carbon fibers being between 1 wt % and 20 wt % of a weight of the second diffusion layer; and an electrolyte membrane provided between the first electrode and the second electrode, the first catalyst layer being provided between the first diffusion layer and the electrolyte membrane, and the second catalyst layer being provided between the second diffusion layer and the electrolyte membrane.
First claim
Opening claim text (preview).
What is claimed is: 1 . A membrane electrode assembly comprising: a first electrode including a first diffusion layer, and a first catalyst layer; a second electrode for generating hydrogen, the second electrode including a second diffusion layer, a second catalyst layer including a second porous catalyst layer including a porous precious metal or sheet-like precious metal, and a hydrophobic moisture management layer provided between the second catalyst layer and the second diffusion layer, the hydrophobic moisture management layer including carbon particles and carbon fibers, a weight of the carbon fibers being between 1 wt % and 20 wt % of a weight of the second diffusion layer; and an electrolyte membrane provided between the first electrode and the second electrode, the first catalyst layer being provided between the first diffusion layer and the electrolyte membrane, and the second catalyst layer being provided between the second diffusion layer and the electrolyte membrane. 2 . The membrane electrode assembly according to claim 1 , wherein the first catalyst layer includes a porous catalyst layer including porous precious metal or sheet-like precious metal. 3 . The membrane electrode assembly according to claim 1 , wherein the hydrophobic moisture management layer has a thickness of 10 μm or more and 50 μm or less. 4 . The membrane electrode assembly according to claim 1 , wherein the hydrophobic moisture management further includes a water repellent agent. 5 . The membrane electrode assembly according to claim 1 , wherein the first catalyst layer is a first porous catalyst layer. 6 . The membrane electrode assembly according to claim 1 , wherein an average primary particle size of the carbon particles and the carbon fibers is preferably 10 nm or more and 300 nm or less. 7 . An electrochemical cell including the membrane electrode assembly according to claim 1 . 8 . A stack including the membrane electrode assembly according to claim 1 . 9 . An electrolyzer including the membrane electrode assembly according to claim 1 .
Assignees
Inventors
Classifications
Hydrogen production from non-carbon containing sources, e.g. by water electrolysis · CPC title
Ammonia · CPC title
Hydrogen or oxygen · CPC title
- C25B11/032Primary
Gas diffusion electrodes · CPC title
Electrodes comprising one or more electrocatalytic coatings on a substrate · CPC title
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- What does patent US2024117511A1 cover?
- A membrane electrode assembly of an embodiment includes: a first electrode including a first diffusion layer, and a first catalyst layer; a second electrode for generating hydrogen, the second electrode including a second diffusion layer, a second catalyst layer including a porous catalyst layer including a porous precious metal or sheet-like precious metal, and a hydrophobic moisture managemen…
- Who is the assignee on this patent?
- Toshiba Kk, Toshiba Energy Systems & Solutions Corp
- What technology area does this patent fall under?
- Primary CPC classification C25B11/032. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Apr 11 2024 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).