SEPARATOR FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME

The present invention relates to a separator for a lithium secondary battery and a lithium secondary battery including the same. According to the present invention, provided are a separator for a lithium secondary battery and a lithium secondary battery including the separator, the separator compris...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	CHO KYUYOUNG, KIM YUNBONG, LEE SUJI, KIM HYEJIN, KWACK WONSUB
Format:	Patent
Sprache:	eng ; kor
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 relates to a separator for a lithium secondary battery and a lithium secondary battery including the same. According to the present invention, provided are a separator for a lithium secondary battery and a lithium secondary battery including the separator, the separator comprising: a porous substrate; and a coating layer located on one side or both sides of the porous substrate and including first inorganic particles and second inorganic particles having different major axis lengths and a binder. The separator has a moisture content of less than 800 ppm after being left at 40°C and 90% relative humidity for 12 hours. 리튬 이차 전지용 분리막, 및 이를 포함하는 리튬 이차 전지에 관한 것으로, 다공성 기재; 및 상기 다공성 기재의 일면 또는 양면에 위치하고, 장축의 길이가 서로 다른 제 1 무기 입자 및 제 2 무기 입자와 바인더를 포함하는 코팅층;을 포함하고, 40℃ 및 상대습도 90%에서 12시간 방치한 후의 수분함유량이 800ppm 미만인 리튬 이차 전지용 분리막, 및 이를 포함하는 리튬 이차 전지를 제공할 수 있다.