NEGATIVE ELECTRODE ACTIVE SUBSTANCE AND PRODUCTION METHOD THEREFOR

The present invention addresses the issue of providing a negative electrode active substance having excellent charge/discharge characteristics (charge/discharge capacity, initial coulombic efficiency, and cycle characteristics). This issue is solved by providing a negative electrode active substance...

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Bibliographische Detailangaben
Hauptverfasser:	KATO Shinji, IKUMA Takahito, KUROKI Katsuhito, KIYOOKA Ryuuichi, ZHU Peixin, KATANO Satoshi
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 addresses the issue of providing a negative electrode active substance having excellent charge/discharge characteristics (charge/discharge capacity, initial coulombic efficiency, and cycle characteristics). This issue is solved by providing a negative electrode active substance that includes silicon (0 valence) (b) and a silicon-based inorganic compound (a) comprising silicon (excluding 0 valence), oxygen, and carbon, said negative electrode active substance being characterized by the equivalent composition ratio [Q units/(D units + T units + Q units)], indicating the carbon bonding state (D units [SiO2C2], T units [SiO3C], Q units[SiO4]) of the silicon (excluding 0 valence) present in the silicon-based inorganic compound (a), being 0.30 to 0.80.