Laminated separator for non-aqueous electrolyte secondary battery

• Main Authors: HORIE KENSAKU, FURUKAWA JUN, HASHIWAKI HIROKI
• Format: Patent
• Language: Chinese; English
• Published: 09.06.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The present invention addresses the problem of suppressing meandering and winding deviation during winding. In a laminated separator in which a porous layer is laminated on one surface of a polyolefin porous film, the ratio of the intensity of a peak derived from an amide bond and a bond other than an amide bond to the intensity of a peak derived from the polyolefin porous film is less than 0.02 in an IR spectrum measured with the surface on the opposite side from the porous layer as the object. 本发明的课题在于抑制卷绕时的蛇行和卷绕偏离。解决手段是在聚烯烃多孔膜的一个面上层叠有多孔层的层叠隔膜中，在以与上述多孔层为相反侧的面作为对象所测定的IR谱图中，来源于酰胺键和酰胺键以外的键的峰的强度与来源于聚烯烃多孔膜的峰的强度的比值为小于0.02。