SECONDARY BATTERY

Disclosed is a secondary battery including: a positive electrode; and a negative electrode that includes a negative electrode active material. The negative electrode active material includes a carbon material and a silicon-containing material. The silicon-containing material includes a first silicon...

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Bibliographische Detailangaben
Hauptverfasser:	SATO Yosuke, OKAZAKI Keita, OKUNO Yukiho
Format:	Patent
Sprache:	eng ; fre ; jpn
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:	Disclosed is a secondary battery including: a positive electrode; and a negative electrode that includes a negative electrode active material. The negative electrode active material includes a carbon material and a silicon-containing material. The silicon-containing material includes a first silicon-containing material and a second silicon-containing material. The average particle size of the first silicon-containing material and the average particle size of the second silicon-containing material are both smaller than the average particle size of the carbon material. The average circularity Zc of the carbon material, the average circularity Zs1 of the first silicon-containing material, and the average circularity Zs2 of the second silicon-containing material satisfy Zs1