POSITIVE ELECTRODE ACTIVE MATERIAL FOR SODIUM SECONDARY BATTERY AND SODIUM SECONDARY BATTERY

PROBLEM TO BE SOLVED: To provide: a positive electrode active material used for sodium secondary batteries which can be alternatives of lithium secondary batteries; and a sodium secondary battery arranged by using the positive electrode active material.SOLUTION: There is provided a positive electrod...

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Bibliographische Detailangaben
Hauptverfasser:	KATO AKIHIKO, FUJII SHINZO
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:	PROBLEM TO BE SOLVED: To provide: a positive electrode active material used for sodium secondary batteries which can be alternatives of lithium secondary batteries; and a sodium secondary battery arranged by using the positive electrode active material.SOLUTION: There is provided a positive electrode active material for sodium secondary battery represented by the general formula, NaMnMO. In the general formula, M represents any of transition metals of Fe, Ni, Co, Ti, V and Cr. Further, in the general formula, x is determined so that 1.6 or more Na atoms in the chemical formula in which M is any of these transition metals contribute to oxidation reduction reactions. The positive electrode active material may be, for example, the positive electrode active material for sodium secondary battery arranged so that M in the general formula is Fe and 0