COMPOSITE OXIDE, METHOD FOR PRODUCING THE SAME, POSITIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY

PROBLEM TO BE SOLVED: To provide a composite oxide useful as a positive electrode active material for a lithium secondary battery excellent in high rate property; a method for producing the same; a positive electrode for a lithium secondary battery obtained using the composite oxide; and a lithium s...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	KOSHIBA NOBUHARU, DOMAE KYOSUKE
Format:	Patent
Sprache:	eng
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
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a composite oxide useful as a positive electrode active material for a lithium secondary battery excellent in high rate property; a method for producing the same; a positive electrode for a lithium secondary battery obtained using the composite oxide; and a lithium secondary battery provided with the positive electrode for a lithium secondary battery.SOLUTION: The composite oxide has a composition represented by formula (I) and has a BET specific surface area of 0.1-3.0 m/g, tap density of 0.8-2.5 g/cm, press density at 78 MPa of 1.5-3.2 g/cm, and a particle diameter D50 of secondary particles of 1-30 μm. In the formula, M represents an element selected from the group consisting of Al, Ti, Fe, Co and Zr; x represents a number of 0.35-0.55, y represents a number of 1.20-1.52, and z represents a number of 0.0098-0.30, provided that the sum of x, y and z is 2; a represents a number of 0.97-1.20, and b represents a number of 3.97-4.04.