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Core-shell catalyst and reaction acceleration method
US2018138518A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2018138518-A1 |
| Application number | US-201615575279-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jun 17, 2016 |
| Priority date | Jul 14, 2015 |
| Publication date | May 17, 2018 |
| Grant date | — |
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Abstract
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Provided are (i) a catalyst that has a core-shell structure and is highly active in an oxygen reduction reaction, which is a cathode reaction of a fuel cell, and (ii) a reaction acceleration method in which the catalyst is used. A core-shell catalyst for accelerating an oxygen reduction reaction, contains: silver or palladium as a core material; and platinum as a shell material, the core-shell catalyst having, on a surface thereof, a (110) surface of a face centered cubic lattice.
First claim
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1 . A core-shell catalyst for accelerating an oxygen reduction reaction, comprising: silver or palladium as a core material; and platinum as a shell material, said core-shell catalyst having, on a surface thereof, a (110) surface of a face centered cubic lattice. 2 . The core-shell catalyst as set forth in claim 1 , wherein the core-shell catalyst has a shell that includes 1 to 3 atomic layers of the platinum. 3 . A reaction acceleration method for accelerating an oxygen reduction reaction by use of a (110) surface that is formed on a surface of a core-shell catalyst containing: silver or palladium as a core material; and platinum as a shell material, said reaction acceleration method comprising: molecularly adsorbing an oxygen molecule onto the (110) surface; forming a water molecule by causing (i) the oxygen molecule adsorbed onto the (110) surface and (ii) a proton to react with each other; and desorbing the water molecule from the (110) surface.
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Silver · CPC title
Positive electrodes · CPC title
Unsupported catalytic particles; loose particulate catalytic materials, e.g. in fluidised state · CPC title
- H01M4/8657Primary
layered · CPC title
Metals or alloys (H01M4/92 takes precedence) · CPC title
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- What does patent US2018138518A1 cover?
- Provided are (i) a catalyst that has a core-shell structure and is highly active in an oxygen reduction reaction, which is a cathode reaction of a fuel cell, and (ii) a reaction acceleration method in which the catalyst is used. A core-shell catalyst for accelerating an oxygen reduction reaction, contains: silver or palladium as a core material; and platinum as a shell material, the core-shell …
- Who is the assignee on this patent?
- Tanaka Precious Metal Ind, Univ Osaka
- 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 Thu May 17 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).