Method For Manufacturing Secondary Battery Separator, Separator Manufactured Thereby, And Secondary Battery Having Same

Abstract: The present invention relates to a secondary battery separator, a method for manufacturing same, and a secondary battery having same, the separator comprising: a first coating layer positioned on one surface of a porous polymer substrate, and comprising a plurality of inorganic particles and a first binder polymer; a second coating layer positioned on the other surface of the porous polymer substrate, and comprising a plurality of inorganic particles and the first binder polymer; and a third coating layer positioned in at least any one of between the porous polymer substrate and the first coating layer or between the porous polymer substrate and the second coating layer, and comprising a second binder polymer, wherein the second binder polymer includes a non-wetting polymer, and thus, by comprising the non-wetting polymer, variation in physical properties between the one surface and the other surface of the separator may be minimized.

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