Catalyst and electrode catalyst layer, membrane electrode assembly, and fuel cell using the catalyst
US-2016087281-A1 · Mar 24, 2016 · US
Core-shell structure type nanosheet
US10985382B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10985382-B2 |
| Application number | US-201816039109-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 18, 2018 |
| Priority date | Jan 19, 2016 |
| Publication date | Apr 20, 2021 |
| Grant date | Apr 20, 2021 |
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Abstract
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A core-shell structure nanosheet includes a metal ruthenium nanosheet, and a platinum atomic layer provided on a surface of the metal ruthenium nanosheet. An electrocatalyst includes carbon, and the core shell structure nanosheet supported on the carbon. A method for manufacturing an electrocatalyst includes applying a ruthenium oxide nanosheet colloid which comprises a ruthenium oxide nanosheet, on carbon to obtain a carbon-supported ruthenium oxide nanosheet, in which the ruthenium oxide nanosheet is supported on the carbon. The carbon-supported ruthenium oxide nanosheet is reduced to obtain a carbon-supported ruthenium metal nanosheet, in which a ruthenium metal nanosheet is supported on the carbon. A platinum atomic layer is provided on a surface of the metal ruthenium nanosheet to obtain the electrocatalyst.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for manufacturing an electrocatalyst, comprising: applying a ruthenium oxide nanosheet colloid which comprises a ruthenium oxide nanosheet, on carbon to obtain a carbon-supported ruthenium oxide nanosheet, in which the ruthenium oxide nanosheet is supported on the carbon; reducing the carbon-supported ruthenium oxide nanosheet to obtain a carbon-supported metal ruthenium nanosheet, in which a metal ruthenium nanosheet is supported on the carbon; and providing a platinum atomic layer on a surface of the metal ruthenium nanosheet to obtain the electrocatalyst comprising the carbon, the metal ruthenium nanosheet supported on the carbon, and the platinum atomic layer provided on the surface of the metal ruthenium nanosheet. 2. The method according to claim 1 , wherein the platinum atomic layer is provided on an entire surface of the metal ruthenium nanosheet. 3. The method according to claim 1 , wherein the platinum atomic layer has a thickness of from 0.3 nm to 1.0 nm, inclusive. 4. The method according to claim 1 , wherein the electrocatalyst is a cathode catalyst or an anode catalyst. 5. The method according to claim 1 , wherein the metal ruthenium nanosheet is a monoatomic layer or a monoatomic layer laminated body, and the platinum atomic layer is a monoatomic layer or a monoatomic layer laminated body. 6. The method according to claim 1 , wherein the metal ruthenium nanosheet is a monoatomic layer. 7. The method according to claim 1 , wherein the metal ruthenium nanosheet is a monoatomic layer laminated body. 8. The method according to claim 6 , wherein the platinum atomic layer is a monoatomic layer. 9. The method according to claim 7 , wherein the platinum atomic layer is a monoatomic layer. 10. The method according to claim 6 , wherein the platinum atomic layer is a monoatomic layer laminated body. 11. The method according to claim 7 , wherein the platinum atomic layer is a monoatomic layer laminated body.
Assignees
Inventors
Classifications
Positive electrodes · CPC title
Carbon · CPC title
Scanning electron microscopy; Transmission electron microscopy · CPC title
characterised by their physical properties · CPC title
Ruthenium, rhodium, osmium or iridium · CPC title
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- What does patent US10985382B2 cover?
- A core-shell structure nanosheet includes a metal ruthenium nanosheet, and a platinum atomic layer provided on a surface of the metal ruthenium nanosheet. An electrocatalyst includes carbon, and the core shell structure nanosheet supported on the carbon. A method for manufacturing an electrocatalyst includes applying a ruthenium oxide nanosheet colloid which comprises a ruthenium oxide nanoshee…
- Who is the assignee on this patent?
- Univ Shinshu, Ishifuku Metal Ind
- What technology area does this patent fall under?
- Primary CPC classification H01M4/8657. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Apr 20 2021 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).