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

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

A positive active material for a lithium secondary battery according to an exemplary embodiment includes a lithium composite transition metal oxide and a surface layer formed on a particle surface of the lithium composite transition metal oxide, and a content of nickel (Ni) in the lithium composite...

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Bibliographische Detailangaben
Hauptverfasser: CHOI, Kwon Young, YU, Byong Yong, HONG, Kijoo, KIM, Ju Seong, NAM, Sang Cheol
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
BASIC ELECTRIC ELEMENTS
CHEMISTRY
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
ELECTRICITY
INORGANIC CHEMISTRY
METALLURGY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Zusammenfassung:A positive active material for a lithium secondary battery according to an exemplary embodiment includes a lithium composite transition metal oxide and a surface layer formed on a particle surface of the lithium composite transition metal oxide, and a content of nickel (Ni) in the lithium composite transition metal oxide. is more than 0.85 mol, the surface layer contains cobalt (Co) and aluminum (Al), and in the surface layer, the distribution of the cobalt (Co) and aluminum (Al) components have different concentration gradients.