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

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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Bibliographische Detailangaben
Hauptverfasser: KIM, YOUNG-KI, LEE, SOONREWL, CHOI, ICKKYU, HONG, SOONKIE, PARK, JUNGJOON, HONG, MINGZI, CHAE, YOUNGJOO
Format: Patent
Sprache:eng ; pol
Schlagworte:
CHEMISTRY
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
INORGANIC CHEMISTRY
METALLURGY
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Beschreibung
Zusammenfassung: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.