NEGATIVE ELECTRODE ACTIVE MATERIAL FOR SECONDARY BATTERIES, AND SECONDARY BATTERY

This negative electrode active material for secondary batteries contains a silicon composite material which is provided with a lithium ion conductive phase that contains silicon, and silicon particles that are dispersed in the lithium ion conductive phase. The silicon composite material contains a n...

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Bibliographische Detailangaben
Hauptverfasser:	SUZUKI, Hirotetsu, BADAR, Saifullah, SAKATA, Motohiro
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:	This negative electrode active material for secondary batteries contains a silicon composite material which is provided with a lithium ion conductive phase that contains silicon, and silicon particles that are dispersed in the lithium ion conductive phase. The silicon composite material contains a nitrogen-containing compound in the surface; and the nitrogen-containing compound is represented by general formula LimSiOxNyMz (wherein 0 ≤ m ≤ 1, 0 ≤ x ≤ 2.5, 0.025 ≤ y ≤ 1.33, 0 ≤ z ≤ 0.5, and M represents a metal element other than Si and Li).