Positive Electrode Active Material for Lithium Secondary Battery, and Method of Preparing the Same

Positive Electrode Active Material for Lithium Secondary Battery, and Method of Preparing the Same

A positive electrode active material includes a lithium transition metal oxide comprising nickel in an amount of 60 mol % or greater with respect to a total number of moles of transition metals excluding lithium and a coating layer placed on a surface of the lithium transition metal oxide. The coati...

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Bibliographische Detailangaben
Hauptverfasser: Do, Joong Yeop, Shin, Ho Suk, Shin, Sun Sik
Format: Patent
Sprache:eng
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:A positive electrode active material includes a lithium transition metal oxide comprising nickel in an amount of 60 mol % or greater with respect to a total number of moles of transition metals excluding lithium and a coating layer placed on a surface of the lithium transition metal oxide. The coating layer has a metal oxide and the lithium transition metal oxide is a single particle containing primary particles having an average particle diameter (D50) of 0.7 to 3 μm. The metal oxide is primary particles having an average particle diameter (D50) of 0.5 μm or less and has at least one metal element selected from the group consisting of Ni, Co, Mn, Al, B, Ti, Ta, W, and Nb.