Protective layers comprising metals for electrochemical cells
US-2019348672-A1 · Nov 14, 2019 · US
Artificial solid electrolyte interphase layers
US11453948B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11453948-B2 |
| Application number | US-201916538711-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 12, 2019 |
| Priority date | Aug 29, 2018 |
| Publication date | Sep 27, 2022 |
| Grant date | Sep 27, 2022 |
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- Title
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- Abstract
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Abstract
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Articles and methods related to passivation layers on alkali metals are generally described.
First claim
Opening claim text (preview).
What is claimed is: 1. An article, comprising: an alkali metal layer; and a passivation layer comprising an alkali metal salt, wherein a molar percentage of hydrogen at the surface of the passivation layer is less than or equal to about 1 mol. %, a thickness of the passivation layer is greater than or equal to about 0.05 micrometers, and the passivation layer is in direct contact with the alkali metal layer, wherein the passivation layer is formed by reacting the alkali metal layer with a gas. 2. The article of claim 1 , wherein a molar percentage of the alkali metal salt in the passivation layer is greater than or equal to about 85 mol. %. 3. The article of claim 1 , wherein the alkali metal layer comprises Li. 4. The article of claim 1 , wherein the alkali metal salt is an alkali metal fluoride. 5. The article of claim 4 , wherein the alkali metal fluoride is LiF. 6. The article of claim 1 , wherein the alkali metal salt is an alkali metal oxide. 7. The article of claim 6 , wherein the alkali metal oxide is Li 2 O. 8. The article of claim 1 , wherein the article is an electrode. 9. A battery comprising the article of claim 1 . 10. An article, comprising: an alkali metal layer; and a passivation layer comprising an alkali metal salt, wherein a molar percentage of carbon, hydrogen, and/or oxygen in the passivation layer is less than 6 mol. % at a depth of about 0.01 micrometers, a thickness of the passivation layer is greater than or equal to about 0.05 micrometers, and the passivation layer is directly contacting the alkali metal layer, wherein the passivation layer is formed by reacting the alkali metal layer with a gas. 11. An article, comprising an alkali metal layer; and a passivation layer comprising an alkali metal oxide, wherein the passivation layer is in direct contact with the alkali metal layer and a molar percentage of hydrogen at the surface of the passivation layer is less than or equal to about 1 mol. %, wherein the passivation layer is formed by reacting the alkali metal layer with a gas.
Assignees
Inventors
Classifications
Lithium (H01M4/405 takes precedence) · CPC title
Selection of inactive substances as ingredients for active masses, e.g. binders, fillers · CPC title
of electrodes based on metals, Si or alloys · CPC title
with at least one oxide layer · CPC title
Energy storage using batteries · CPC title
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Frequently asked questions
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- What does patent US11453948B2 cover?
- Articles and methods related to passivation layers on alkali metals are generally described.
- Who is the assignee on this patent?
- Massachusetts Inst Technology
- What technology area does this patent fall under?
- Primary CPC classification C23C22/73. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Sep 27 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).