Nitride stabilized core/shell nanoparticles
US-2019198885-A1 · Jun 27, 2019 · US
Intermetallic L10-NiPtAg catalysts for oxygen reduction reaction
US11387464B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11387464-B2 |
| Application number | US-201916716127-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 16, 2019 |
| Priority date | Dec 16, 2019 |
| Publication date | Jul 12, 2022 |
| Grant date | Jul 12, 2022 |
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Abstract
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An electrode catalyst for an oxygen reduction reaction including intermetallic L10-NiPtAg alloy nanoparticles having enhanced ORR activity and durability. The catalyst including intermetallic L10-NiPtAg alloy nanoparticles is synthesized by employing silver (Ag) as a dopant and annealing under specific conditions to form the intermetallic structure. In one example, the intermetallic L10-NiPtAg alloy nanoparticles are represented by the formula: NixPtyAgz wherein 0.4≤x≤0.6, 0.4≤y≤0.6, z≤0.1.
First claim
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What is claimed is: 1. An electrode catalyst for oxygen reduction reaction comprising intermetallic L1 0 -NiPtAg alloy nanoparticles, having mass activity (MA) of greater than 1000 A/g Pt . 2. The catalyst according to claim 1 , wherein the intermetallic L1 0 -NiPtAg alloy nanoparticles have mass activity (MA) greater than 1100 A/g Pt . 3. The catalyst according to claim 1 , wherein the intermetallic L1 0 -NiPtAg alloy nanoparticles have mass activity (MA) retention greater than 40%. 4. The catalyst according to claim 1 , wherein the intermetallic L1 0 -NiPtAg alloy nanoparticles have mass activity (MA) retention greater than 45%. 5. The catalyst according to claim 1 , wherein the intermetallic L1 0 -NiPtAg alloy nanoparticles are represented by the formula: Ni x Pt y Ag z , wherein 0.4≤x≤0.6, 0.4≤y≤0.6, z≤0.1.
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- What does patent US11387464B2 cover?
- An electrode catalyst for an oxygen reduction reaction including intermetallic L10-NiPtAg alloy nanoparticles having enhanced ORR activity and durability. The catalyst including intermetallic L10-NiPtAg alloy nanoparticles is synthesized by employing silver (Ag) as a dopant and annealing under specific conditions to form the intermetallic structure. In one example, the intermetallic L10-NiPtAg …
- Who is the assignee on this patent?
- Toyota Eng & Mfg North America
- What technology area does this patent fall under?
- Primary CPC classification C22F1/14. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jul 12 2022 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).