A SEPARATOR AND AN ELECTROCHEMICAL DEVICE COMPRISING THE SAME

One aspect of the present invention provides a separator including a porous substrate, and a heat-resistant layer disposed on at least one surface of the porous substrate and including inorganic particles, wherein the ratio (F2/F1) of air permeability (F2, sec/100 mL) in a curved surface with a radi...

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Bibliographische Detailangaben
Hauptverfasser:	KIM BYUNG HYUN, CHOI KWANG HO, GONG SEOK HYEON, PARK DAE BOG
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:	One aspect of the present invention provides a separator including a porous substrate, and a heat-resistant layer disposed on at least one surface of the porous substrate and including inorganic particles, wherein the ratio (F2/F1) of air permeability (F2, sec/100 mL) in a curved surface with a radius of curvature of 10 mm of the separator to the air permeability (F1, sec/100 mL) in a flat surface of the separator is 1.5 or less, and an electrochemical device including the same. Therefore, it is possible to solve the problem of lowering air permeability, ionic conductivity, and resistance due to a load applied to a heat-resistant layer in the curved area of the separator inside a battery. 본 발명의 일 측면은, 다공성 기재, 및 상기 다공성 기재의 적어도 일면에 구비되고 무기 입자를 포함하는 내열층을 포함하는 분리막에 있어서, 상기 분리막 중 평면에서의 통기도(F1, sec/100ml)에 대한, 상기 분리막 중 곡률 반경이 10mm인 곡면에서의 통기도(F2, sec/100ml)의 비(F2/F1)가 1.5 이하인 분리막 및 이를 포함하는 전기화학소자를 제공한다.