NEGATIVE ELECTRODE ACTIVE MATERIAL, NEGATIVE ELECTRODE, AND SECONDARY BATTERY

The present invention provides a negative electrode active material for a battery, exhibiting sufficiently excellent initial charge-discharge efficiency and cycle characteristics by suppressing physical deterioration of a film due to expansion and contraction of a core material. The present inventio...

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Bibliographische Detailangaben
Hauptverfasser:	KOIKE, Yosuke, KUBOTA, Hironobu
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 provides a negative electrode active material for a battery, exhibiting sufficiently excellent initial charge-discharge efficiency and cycle characteristics by suppressing physical deterioration of a film due to expansion and contraction of a core material. The present invention relates to a negative electrode active material 10 for a battery, comprising: a negative electrode active material core material 1; and a film 2 formed on a surface of the negative electrode active material core material 1, wherein the film 2 is an organic-inorganic hybrid film composed of a reactant at least including: a first metal alkoxide including no metal atom-carbon atom bond in one molecule; and a second metal alkoxide including two or more of metal atom-carbon atom bonds in one molecule.