NEGATIVE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, PREPARING METHOD FOR THE SAME AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME

NEGATIVE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY, PREPARING METHOD FOR THE SAME AND LITHIUM SECONDARY BATTERY INCLUDING THE SAME

The present disclosure is directed to a negative electrode active material for lithium secondary batteries, to a method for preparing the same, and to a lithium secondary battery including the same, the negative electrode active material including a porous core in which scaly silicon fragments are c...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SHIM, Hyeonwoo, KWON, Seman, HONG, Soonho
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 disclosure is directed to a negative electrode active material for lithium secondary batteries, to a method for preparing the same, and to a lithium secondary battery including the same, the negative electrode active material including a porous core in which scaly silicon fragments are connected in an entangled manner; and a shell layer covering the core, where the shell layer includes a carbon-based material and silicon, and the shell layer has a thickness in a range of more than 10 to less than 60 % with respect to an average particle diameter D50 of the negative electrode active material.