Positive active material for rechargeable lithium battery, method of preparing same, and rechargeable lithium battery including the same

The present invention refers to a positive active material for a rechargeable lithium battery including a core including at least one selected from a nickel-based composite oxide represented by Chemical Formula 1 or a lithium manganese oxide represented by Chemical Formula 2; and a coating layer on...

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Bibliographische Detailangaben
Hauptverfasser:	Hong, Ming-Zi, Park, Han-Eol, Kim, Ki-Hyun, Kim, Min-Han, Choi, Jong-Seo, Park, Do-Hyung, Woo, Myong-A, Kwon, Seon-Young, Moon, Joong-Ho, Kim, Ji-Hyun
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Beschreibung
Zusammenfassung:	The present invention refers to a positive active material for a rechargeable lithium battery including a core including at least one selected from a nickel-based composite oxide represented by Chemical Formula 1 or a lithium manganese oxide represented by Chemical Formula 2; and a coating layer on a surface of the core and including a lithium metal oxide represented by Chemical Formula 3: €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒChemical Formula 1€ƒ€ƒ€ƒ€ƒ€ƒLiNi x Co y Mn 1-x-y O 2 wherein 0.1‰¤x‰¤0.8, and 0.1‰¤y‰¤0.8, €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒChemical Formula 2€ƒ€ƒ€ƒ€ƒ€ƒLi a Mn b O c wherein 1‰¤a‰¤2, 1‰¤b‰¤2, and 2‰¤c‰¤4, and €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒChemical Formula 3€ƒ€ƒ€ƒ€ƒ€ƒLi 2 MO 3 wherein M is of Zr, Ti or a combination thereof.