METHOD FOR THE MANUFACTURE OF COMPOSITE SEPARATORS
The present invention pertains to a process for the manufacture of a composite separator for an electrochemical cell, said process comprising the following steps: (i) providing a substrate layer; (ii) providing a coating composition comprising: -an aqueous latex comprising at least one vinylidene fl...
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Main Authors | , , |
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Format | Patent |
Language | English Korean |
Published |
05.11.2014
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Subjects | |
Online Access | Get full text |
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Summary: | The present invention pertains to a process for the manufacture of a composite separator for an electrochemical cell, said process comprising the following steps: (i) providing a substrate layer; (ii) providing a coating composition comprising: -an aqueous latex comprising at least one vinylidene fluoride (VdF) polymer [polymer (F)] under the form of primary particles having an average primary particle size of less than 1 μm, as measured according to ISO 13321, and -at least one non-electroactive inorganic filler material; (iii) applying said coating composition onto at least one surface of said substrate layer to provide a coating composition layer; and (iv) drying said coating composition layer at a temperature of at least 60° C., preferably of at least 100° C., more preferably of at least 180° C. to provide said composite separator. The present invention also pertains to a coating composition suitable for use in said process, to the composite separator obtained from said process and to an electrochemical cell comprising said composite separator. |
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Bibliography: | Application Number: KR20147025315 |