POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

POSITIVE ELECTRODE ACTIVE MATERIAL FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERIES, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

The present invention provides a positive electrode active material which is capable of improving the battery capacity. A positive electrode active material for nonaqueous electrolyte secondary batteries according to one embodiment of the present disclosure contains a first lithium transition metal...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Jito, Daizo, Ogasawara, Takeshi
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:The present invention provides a positive electrode active material which is capable of improving the battery capacity. A positive electrode active material for nonaqueous electrolyte secondary batteries according to one embodiment of the present disclosure contains a first lithium transition metal composite oxide that is represented by general formula LiaNibM11-bO2 (wherein 1.5≤a≤2.5; 0.95≤b≤1.00; and M1 represents at least one element that is selected from among Cu, Sr, Ca, Nb, Si and Al); the first lithium transition metal composite oxide has voids inside; and the void fraction of the first lithium transition metal composite oxide is 2% to 10%.