SILICON OXIDE AND PROCESS OF MANUFACTURING THE SAME, NEGATIVE ELECTRODE, AND LITHIUM ION SECONDARY BATTERY AND ELECTROCHEMICAL CAPACITOR

PROBLEM TO BE SOLVED: To provide a silicon oxide that is effective as a negative electrode active material in a negative electrode material for a nonaqueous electrolyte secondary battery excellent in cycle characteristics while maintaining high battery capacity and low coefficient of volume expansio...

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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 CHEMISTRY COMPOUNDS THEREOF ELECTRICITY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a silicon oxide that is effective as a negative electrode active material in a negative electrode material for a nonaqueous electrolyte secondary battery excellent in cycle characteristics while maintaining high battery capacity and low coefficient of volume expansion of the silicon oxide and process of manufacturing the same, a negative electrode using the same, and a lithium ion secondary battery and electrochemical capacitor.SOLUTION: The silicon oxide for a nonaqueous electrolyte secondary battery negative electrode material is a particle having a percentage content of Cu of between 100 to 20,000 ppm (mass), a percentage content of Fe of between 20 to 1,000 ppm (mass), a percentage content of Al is 1,000 ppm or less (mass), an average particle size of 0.1 to 30 μm, and a BET specific surface area of 0.5 to 30 m/g.