NEGATIVE-ELECTRODE ACTIVE SUBSTANCE, MIXED NEGATIVE-ELECTRODE ACTIVE SUBSTANCE MATERIAL, AND METHOD FOR MANUFACTURING NEGATIVE-ELECTRODE ACTIVE SUBSTANCE PARTICLES

The present invention is a negative electrode active material containing a negative electrode active material particle which includes a silicon compound particle containing a silicon compound that contains oxygen. The silicon compound particle contains a Li compound, and at least part of Si constitu...

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Bibliographische Detailangaben
Hauptverfasser:	MATSUNO Takumi, TAKAHASHI Kohta, AWANO Hidekazu, HIROSE Takakazu, SAKAI Reiko
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 is a negative electrode active material containing a negative electrode active material particle which includes a silicon compound particle containing a silicon compound that contains oxygen. The silicon compound particle contains a Li compound, and at least part of Si constituting the silicon compound particle is present in at least one state selected from oxide of Si2+to Si3+containing no Li, and compound containing Li and Si2+to Si3+. This provides a negative electrode active material capable of increasing battery capacity and improving cycle characteristics and initial charge-discharge characteristics when the negative electrode active material is used for a secondary battery; a mixed negative electrode active material containing the negative electrode active material; and a method for producing a negative electrode active material particle which enables production of the negative electrode active material particle to be contained in the negative electrode active material as described above.