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US 2025/0029997 A1Published application
Transition metal oxide particles encapsulated in nanostructured lithium titanate or lithium aluminate, and the use thereof in lithium ion batteries
AssigneeEvonik Operations GmbH
InventorsMarcel Herzog, Daniel Esken, Ryo Takata, Franz Schmidt, Rajendra Negi, Matthias Elm
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Abstract
A process for producing a coated transition metal oxide involves subjecting a transition metal oxide and a pyrogenically produced lithium titanate and/or pyrogenically produced lithium aluminate to dry mixing. A coated transition metal oxide is obtainable by this process; and cathode for a lithium ion battery and a lithium ion battery containing such coated particles is useful.
Claims6
A coated transition metal oxide, comprising:
- a core consisting of a transition metal oxide, and
- a shell comprising pyrogenically produced lithium titanate with a number average particle size d50 of 10 nm-200 nm, and/or pyrogenically produced lithium aluminate with a number average particle size d50 of less than 20 μm, as determined by TEM analysis.
Dependencies are inferred from the claim text.