ACTIVE MATERIAL FOR BATTERY, COMPOSITE ACTIVE MATERIAL FOR BATTERY, AND SECONDARY BATTERY

An object of the present invention is to provide an active material for a battery that can improve discharge capacity to 800 mAh/g or more, for example, while retaining good initial Coulombic efficiency and cycle characteristics, a composite active material for a battery containing the same, and a s...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ZHU, Peixin, MATSUKI, Koichiro, KAWASE, Kenichi
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:	An object of the present invention is to provide an active material for a battery that can improve discharge capacity to 800 mAh/g or more, for example, while retaining good initial Coulombic efficiency and cycle characteristics, a composite active material for a battery containing the same, and a secondary battery containing these in a negative electrode. The active material for a battery according to the present invention is an amorphous silicon-based material containing elements including Si, O, and C and has a ratio (A/B) between a total value A of respective peak integral values attributed to SiO2C2 and SiO3C and a peak integral value B attributed to SiO4 of 0.5 or more and 5.0 or less in a chemical shift range of 20 ppm to -150 ppm in a solid-state 29Si-NMR spectrum.