COMPOSITE SEPARATOR FOR LITHIUM SECONDARY BATTERY, AND MANUFACTURING METHOD THEREFOR

The present invention relates to a composite separator for a lithium secondary battery, and an aqueous manufacturing method therefor, the composite separator comprising: a porous polymer substrate; a heat-resistant coating layer containing an inorganic material so as to be formed on the upper surfac...

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Bibliographische Detailangaben
Hauptverfasser:	JEONG, Soon Yong, LIM, Chang Sup, IM, Kyoung Ran
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
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	The present invention relates to a composite separator for a lithium secondary battery, and an aqueous manufacturing method therefor, the composite separator comprising: a porous polymer substrate; a heat-resistant coating layer containing an inorganic material so as to be formed on the upper surface of the porous polymer substrate; and a composite binder in which an organic-inorganic composite sol and an organic polymer are mixed, or an organic polymer binder, which bonds the porous polymer substrate and the heat-resistant coating layer, and a nonionic surfactant, and thus the present invention exhibits high air permeability, low heat shrinkage, and excellent electrochemical characteristics.