Negative active material lithium secondary battery including the material and method for manufacturing the material

Disclosed are a negative electrode active material and a lithium secondary battery comprising the same. The negative electrode active material includes an active material core; and a composite coating layer disposed on the surface of the active material core and including a first carbon-based materi...

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Bibliographische Detailangaben
Hauptverfasser:	KWON SEUNG UK, JEON, SEONG HO, JUNG, HEE CHUL, HAN, SUNG SOO, MOON, JONG SEOK, YANG, JEE EUN
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	BASIC ELECTRIC ELEMENTS CHEMISTRY COMPOUNDS THEREOF ELECTRICITY INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Beschreibung
Zusammenfassung:	Disclosed are a negative electrode active material and a lithium secondary battery comprising the same. The negative electrode active material includes an active material core; and a composite coating layer disposed on the surface of the active material core and including a first carbon-based material and a lithium-containing oxide having an orthorhombic crystal structure. By improving the stability of the active material core structure and suppressing an irreversible lithium consumption reaction on the surface of the active material core, it is possible to improve the life characteristics of lithium secondary batteries. 음극 활물질 및 이를 채용한 리튬 이차 전지가 개시된다. 상기 음극 활물질은 활물질 코어; 및 상기 활물질 코어의 표면에 배치되고, 사방정계(orthorhombic) 결정구조의 리튬 함유 산화물 및 제1 탄소계 소재를 포함하는 복합코팅층;을 포함하여, 활물질 코어구조의 안정성을 향상시키고, 활물질 코어 표면에서 비가역적인 리튬 소모 반응을 억제함으로써, 리튬 이차 전지의 수명 특성을 향상시킬 수 있다.