SILICON OXIDE AND METHOD FOR PRODUCING THE SAME, NEGATIVE ELECTRODE, AND LITHIUM ION SECONDARY BATTERY AND ELECTROCHEMICAL CAPACITOR

PROBLEM TO BE SOLVED: To provide: a silicon oxide which is useful as a negative electrode active material in a negative electrode material for a nonaqueous electrolyte secondary battery that is excellent in cycle characteristics, while maintaining the high battery capacity and low volume expansion o...

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Bibliographische Detailangaben
Hauptverfasser:	SAITO KOGU, INUKAI TETSUYA, FUKUOKA HIROFUMI, UENO SUSUMU
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CAPACITORS CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE 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 silicon oxide which is useful as a negative electrode active material in a negative electrode material for a nonaqueous electrolyte secondary battery that is excellent in cycle characteristics, while maintaining the high battery capacity and low volume expansion of the silicon oxide; and a method for producing the silicon oxide; a negative electrode comprising the silicon oxide; and a lithium ion secondary battery and an electrochemical capacitor.SOLUTION: A silicon oxide for a nonaqueous electrolyte secondary battery negative electrode material has a Co content of 2-200 ppm.