SEPARATOR FOR SECONDARY BATTERY, PREPARATION METHOD THEREFOR, AND SECONDARY BATTERY COMPRISING SAME

Abstract: disclosed is a separator for a secondary battery, which simultaneously achieves uniform coatability of a binder slurry that is in a trade-off relationship and reduction in cell resistance. the separator includes a preliminary separator including a porous substrate and a coating layer on one surface of the porous substrate, a first binder layer on one surface of the coating layer, and a second binder layer on the other surface of the porous substrate. the first binder layer and the second binder layer each include the same or different surfactants, and satisfy

Inventor(s): Ji Su LEE, Hye Won KIM, Dong Wook SUNG, Kyung Ryun KA

CPC Classification: H01M50/449 (PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY)

Search for rejections for patent application number 20250183482