Method for fabricating core-shell particles and core-shell particles fabricated by the method
US-9620786-B2 · Apr 11, 2017 · US
Core shell
US10675681B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10675681-B2 |
| Application number | US-201815886635-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 1, 2018 |
| Priority date | Feb 2, 2017 |
| Publication date | Jun 9, 2020 |
| Grant date | Jun 9, 2020 |
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Abstract
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Multifunctional core@shell nanoparticles (CSNs) useful in electrochemical cells, particularly for use as an electrocatalyst material. The multifunctional CSNs comprise a catalytic core component encompassed by one or more outer shells. Also included are electrochemical cell electrodes and electrochemical cells that electrochemically convert carbon dioxide to, for example, useful fuels (e.g., synthetic fuels) or other products, and which comprise multifunctional CSNs, and methods for making the same.
First claim
Opening claim text (preview).
What is claimed is: 1. A nanoparticle comprising: a catalytic core component encompassed by and in contact with an outermost shell; wherein the catalytic core component comprises at least one unoxidized metal as an innermost portion thereof; wherein the outermost shell comprises at least one compound of lanthanum, cerium, calcium, magnesium, or manganese having a halogen and/or an oxygen atom, and wherein the at least one unoxidized metal is coated by a metal oxide. 2. The nanoparticle according to claim 1 , wherein the at least one compound is selected from the group consisting of a fluoride, an oxide, an oxyfluoride, and a hydroxide. 3. The nanoparticle according to claim 1 , wherein the at least one unoxidized metal is selected from the group consisting of iron, cobalt, nickel, copper, lead, tin, and combinations thereof. 4. The nanoparticle according to claim 1 , wherein the catalytic core component is solid. 5. A nanoparticle comprising: a catalytic core component encompassed by and in contact with an outermost shell, wherein the catalytic core component comprises at least one unoxidized metal as an innermost portion thereof; wherein the outermost shell comprises at least one compound of lanthanum, cerium, calcium, magnesium, or manganese having a halogen and/or an oxygen atom; wherein the at least one unoxidized metal is coated by a metal oxide; and wherein the catalytic core component is hollow. 6. The nanoparticle according to claim 1 , wherein the at least one compound is selected from the group consisting of LaF 3 , La(OH) 3 , CeF 3 , CaF 2 , MgF 2 , LaOF, CeOF, La 2 O 3 , and CeO 2 . 7. The nanoparticle according to claim 1 , wherein the at least one compound is more than one compound. 8. The nanoparticle according to claim 1 , wherein the outermost shell completely covers the surface area of the catalytic core component. 9. The nanoparticle according to claim 1 , wherein the outermost shell partially covers the surface area of the catalytic core component. 10. The nanoparticle according to claim 9 , wherein the nanoparticle has from about 25 to 45% shell coverage. 11. The nanoparticle according to claim 9 , wherein the nanoparticle has from about 1 to 20% shell coverage. 12. An electrochemical cell comprising: an anode, a cathode, and a liquid electrolyte; wherein the cathode comprises an electrocatalytic component, the electrocatalytic component including at least one nanoparticle according to claim 1 ; wherein the catalytic core component is capable of chemically reducing carbon dioxide. 13. The electrochemical cell according to claim 12 , wherein the cell chemically reduces carbon dioxide when the cell is energized. 14. The electrochemical cell according to claim 12 , wherein the at least one compound is selected from a fluoride, an oxide, an oxyfluoride, and a hydroxide. 15. An electrode comprising an electrocatalytic component, the electrocatalytic component including a nanoparticle according to claim 1 ; wherein the catalytic core component is capable of chemically reducing carbon dioxide.
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Chemistry & Metallurgy · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
with tin · CPC title
Nickel · CPC title
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- What does patent US10675681B2 cover?
- Multifunctional core@shell nanoparticles (CSNs) useful in electrochemical cells, particularly for use as an electrocatalyst material. The multifunctional CSNs comprise a catalytic core component encompassed by one or more outer shells. Also included are electrochemical cell electrodes and electrochemical cells that electrochemically convert carbon dioxide to, for example, useful fuels (e.g., sy…
- Who is the assignee on this patent?
- Honda Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B22F1/0044. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jun 09 2020 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 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).