POSITIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, METHOD OF PREPARING THE SAME AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME

Disclosed are a positive active material for a rechargeable lithium battery and a rechargeable lithium battery including the same. The positive active material may include a first compound represented by Chemical Formula 1 and a second compound represented by Chemical Formula 2 wherein the second co...

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Bibliographic Details
Main Authors Hong, Mingzi, Kim, Young-Ki, Hong, Soonkie, Chae, Youngjoo, Lee, Soonrewl, Choi, Ickkyu, Park, Jungjoon
Format Patent
LanguageEnglish
French
German
Published 26.07.2023
Subjects
CHEMISTRY
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
INORGANIC CHEMISTRY
METALLURGY
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Summary:Disclosed are a positive active material for a rechargeable lithium battery and a rechargeable lithium battery including the same. The positive active material may include a first compound represented by Chemical Formula 1 and a second compound represented by Chemical Formula 2 wherein the second compound has a smaller particle diameter than the first compound, wherein at least one of the first compound and the second compound includes a core and a surface layer surrounding the core, wherein a Ni atom concentration (at%) of the metals except Li of the surface layer is higher than a Ni atom concentration (at%) of the metals except Li of the core, and a cation mixing is less than or equal to about 3 %. Chemical Formula 1 and Chemical Formula 2 are described in the detailed description.
Bibliography:Application Number: EP20190206386