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US 11,453,948 B2Granted
Artificial solid electrolyte interphase layers
AssigneeMassachusetts Institute of Technology
InventorsBetar Gallant, Mingfu He, Rui Guo
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Abstract
Articles and methods related to passivation layers on alkali metals are generally described.
Claims11
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.
1 more element
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.
1 more element
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.
1 more element
Dependencies are inferred from the claim text.