Method for manufacturing separator for lithium secondary battery, and lithium secondary battery including separator

The present disclosure provides a method of manufacturing a separator of a lithium secondary battery interposed between a positive electrode and a negative electrode of the lithium secondary battery, the method comprising: preparing a separator substrate; forming a ceramic coating layer by applying a first coating solution including a ceramic material to a surface of the separator substrate; and forming a reaction layer that scatters X-rays by applying a second coating solution containing a metal compound to an edge portion of the upper surface of the ceramic coating layer that is not in contact with the positive electrode and the negative electrode. 本公开提供一种锂二次电池的隔膜的制造方法，该隔膜插设在锂二次电池的正极和负极之间，该方法包括：准备隔膜基板；通过将包含陶瓷材料的第一涂布溶液涂覆到隔膜基板的表面来形成陶瓷涂层；以及通过将包含金属化合物的第二涂布溶液涂覆到陶瓷涂层的上表面的不与正极和负极接触的边缘部分来形成散射X射线的反应层。