METHOD FOR MANUFACTURING SEPARATOR, SEPARATOR MANU

专利名称：METHOD FOR MANUFACTURING

SEPARATOR, SEPARATOR MANUFACTUREDTHEREBY, AND ELECTROCHEMICAL DEVICEINCLUDING SAME

发明人：LEE, Joo-Sung,RYU, Bo-Kyung,KIM, Jong-Hun申请号：EP13853705.5申请日：20131112公开号：EP2808923A1公开日：20141203

专利附图：

摘要：The present invention refers to a method of preparing a separator, comprising:

producing a dispersion comprising inorganic particles, a polymer binder, polymer fibersand a solvent; applying the dispersion on the top surface of a substrate to form a non-woven fabric web as a layer comprising the inorganic particles, the polymer binder andthe polymer fiber, in which the inorganic particles are positioned in gaps of the polymerfibers and adhered thereto by the polymer binder; and drying and compressing the non-woven fabric web to obtain a non-woven fabric substrate; a separator prepared by themethod; and an electrochemical device comprising the separator. In the method of thepresent invention, micro-sized pores present in a conventional non-woven fabricsubstrate are sufficiently filled with inorganic particles and a polymer binder to controlthe pore size on a nanometer scale, thereby inhibiting the generation of a leak currentand thus preventing the insulating property of electrochemical devices using the

separator from being deteriorated. Also, the filling of the inorganic particles in the poresof the non-woven fabric substrate made of polymer fibers can increase the mechanicalstrength of the separator.

申请人：LG Chem, Ltd.

地址：128 Yeoui-daero Yeongdeungpo-gu Seoul 150-721 KR

国籍：KR

代理机构：Goddar, Heinz J.

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