Electrode, membrane electrode assembly, electrochemical cell, and stack
US-2017130348-A1 · May 11, 2017 · US
Laminated catalyst, electrode, membrane electrode assembly, electrochemical cell, stack, and electrolyzer
US2024093391A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2024093391-A1 |
| Application number | US-202318459636-A |
| Country | US |
| Kind code | A1 |
| Filing date | Sep 1, 2023 |
| Priority date | Sep 20, 2022 |
| Publication date | Mar 21, 2024 |
| Grant date | — |
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- Title
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Abstract
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A laminated catalyst according to an embodiment includes an oxide layer, a first catalyst layer on the oxide layer and a second catalyst layer on the first catalyst layer. The oxide layer is a layer of oxide including one or more non-noble metals as a main component. The first catalyst layer includes an oxide of noble metal including Ir and/or Ru as a main component. The second catalyst layer includes an oxide of noble metal including Ir and/or Ru as a main component. The first catalyst layer is denser than the second catalyst layer.
First claim
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What is claimed is: 1 . A laminated catalyst comprising: an oxide layer; a first catalyst layer on the oxide layer; and a second catalyst layer on the first catalyst layer, wherein the oxide layer is a layer of oxide including one or more non-noble metals as a main component, the first catalyst layer includes an oxide of noble metal including Ir and/or Ru as a main component, the second catalyst layer includes an oxide of noble metal including Ir and/or Ru as a main component, and the first catalyst layer is denser than the second catalyst layer. 2 . The laminated catalyst according to claim 1 , wherein the oxide layer includes an oxide including one or more transition elements. 3 . The laminated catalyst according to claim 1 , wherein a porosity rate of the oxide layer is 0[%] or more and 5[%] or less. 4 . The laminated catalyst according to claim 1 , wherein the oxide layer includes an oxide of Ni, and a ratio of Ni contained in the oxide layer to one or more metal elements contained in the oxide layer is 80[%] or more and 100[%] or less. 5 . The laminated catalyst according to claim 1 , wherein a thickness of the oxide layer is 0.1 [nm] or more and 1.5 [nm] or less. 6 . The laminated catalyst according to claim 1 , wherein a porosity rate of the first catalyst layer is 0[%] or more and 5[%] or less. 7 . The laminated catalyst according to claim 1 , wherein a thickness of the first catalyst layer is 0.5 [nm] or more and 15 [nm] or less. 8 . The laminated catalyst according to claim 1 , wherein a sum of concentration of Ir and Ru contained in the first catalyst layer to one or more metal elements contained in the first catalyst layer is 90[%] or more and 100[%] or less. 9 . The laminated catalyst according to claim 1 , wherein a porosity rate of the second catalyst layer is 10[%] or more and 90[%] or less. 10 . The laminated catalyst according to claim 1 , wherein a thickness of the second catalyst layer is 100 [nm] or more and 2000 [nm] or less. 11 . The laminated catalyst according to claim 1 , wherein a sum of concentration of Ir and Ru contained in the second catalyst layer to one or more metal elements contained in the second catalyst layer is 90[%] or more and 100[%] or less. 12 . An electrode comprising: the laminated catalyst according to claim 1 ; and a substrate. 13 . A membrane electrode assembly comprising: the electrode according to claim 12 . 14 . An electrochemical cell comprising: the membrane electrode assembly according to claim 13 . 15 . A stack comprising: the electrode chemical cell according to claim 14 . 16 . An electrolyzer comprising: the electrochemical cell according to claim 14 .
Assignees
Inventors
Classifications
Hydrogen production from non-carbon containing sources, e.g. by water electrolysis · CPC title
- C25B11/093Primary
at least one noble metal or noble metal oxide and at least one non-noble metal oxide · CPC title
with diaphragms · CPC title
Porous electrodes · CPC title
Oxides, hydroxides or oxygenated metallic salts · CPC title
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- What does patent US2024093391A1 cover?
- A laminated catalyst according to an embodiment includes an oxide layer, a first catalyst layer on the oxide layer and a second catalyst layer on the first catalyst layer. The oxide layer is a layer of oxide including one or more non-noble metals as a main component. The first catalyst layer includes an oxide of noble metal including Ir and/or Ru as a main component. The second catalyst layer i…
- 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 C25B11/093. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Mar 21 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).