Non-carbon mixed-metal oxide support for electrocatalysts
US-2015221953-A1 · Aug 6, 2015 · US
Oxygen evolution catalyst
US2019245212A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2019245212-A1 |
| Application number | US-201916262197-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jan 30, 2019 |
| Priority date | Feb 7, 2018 |
| Publication date | Aug 8, 2019 |
| Grant date | — |
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- Title
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Abstract
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An oxygen evolution catalyst includes a core and a shell covering the surface of the core. The core includes ruthenium oxide or metal ruthenium in at least a surface portion. The shell includes titania or a composite oxide of titanium and ruthenium. Such an oxygen evolution catalyst is obtained by (a) dispersing core particles each including ruthenium oxide or metal ruthenium in at least a surface portion in a solvent to obtain a dispersion, (b) adding a Ti source to the dispersion to produce precursor particles in which the surface of each core particle is covered with a titania precursor, and (c) collecting the precursor particles from the dispersion and heat-treating the precursor particles after drying.
First claim
Opening claim text (preview).
What is claimed is: 1 . An oxygen evolution catalyst comprising: a core; and a shell covering a surface of the core, wherein the core includes ruthenium oxide or metal ruthenium in at least a surface portion, and the shell includes titania or a composite oxide of titanium and ruthenium. 2 . The oxygen evolution catalyst according to claim 1 , wherein a titania coverage is 0.05 ML or more and 5.0 ML or less, the titania coverage being the number of titania atomic layers on the assumption that all of titanium included in the shell has become titania and that the titania uniformly covers the surface of the core. 3 . The oxygen evolution catalyst according to claim 1 , used in an oxygen electrode of a water electrolyzer. 4 . The oxygen evolution catalyst according to claim 1 , added to an anode of a fuel cell.
Assignees
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Classifications
Metals or alloys (H01M4/92 takes precedence) · CPC title
- H01M4/8657Primary
layered · CPC title
Oxides, hydroxides or oxygenated metallic salts · CPC title
- C25B1/04Primary
by electrolysis of water · CPC title
Compounds thereof with non-metallic elements · CPC title
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- What does patent US2019245212A1 cover?
- An oxygen evolution catalyst includes a core and a shell covering the surface of the core. The core includes ruthenium oxide or metal ruthenium in at least a surface portion. The shell includes titania or a composite oxide of titanium and ruthenium. Such an oxygen evolution catalyst is obtained by (a) dispersing core particles each including ruthenium oxide or metal ruthenium in at least a surf…
- Who is the assignee on this patent?
- Toyota Chuo Kenkyusho Kk, Toyota Motor Co Ltd
- 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 Aug 08 2019 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).