The present disclosure provides a rotaxane polymer binder containing a polymer based on a rotaxane structure. The polymer binder may further contain a polymer cross-linked with a polar polymer. The polar polymer may be a polymer containing the element F, O or N in a functional group and having high polarity.
In addition, the present disclosure provides an electrode containing the rotaxane polymer binder as a binder for a lithium secondary battery, and a secondary battery containing the electrode.