IMPROVED COATED BATTERY SEPARATOR

A coated battery separator is described herein. The coated battery separator includes a porous membrane with a coating on at least one side thereof, wherein the coated separator exhibits at least one of improved thickness uniformity of the coating and improved adhesion of the coating to the porous m...

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Bibliographic Details
Main Authors Chemelewski, Katharine, Moran, Robert, Summey, Barry j, Reinartz, Stefan
Format Patent
LanguageEnglish
Published 07.07.2022
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Summary:A coated battery separator is described herein. The coated battery separator includes a porous membrane with a coating on at least one side thereof, wherein the coated separator exhibits at least one of improved thickness uniformity of the coating and improved adhesion of the coating to the porous membrane. In some embodiments, the coated battery separator is thin or ultrathin. A method for forming a coated battery separator that exhibits the aforementioned properties is also described. The method may include steps of forming a coating and calendering the coating. In some embodiments, calendering is performed on a dried coating. In some embodiments, the coating is or includes a ceramic coating, a polymer coating, a sticky coating, a shutdown coating, or combinations thereof.
Bibliography:Application Number: US202017613113