An electrochemical apparatus includes a positive electrode plate, a negative electrode plate, a separator, and an electrolyte. The separator is disposed between the positive electrode plate and the negative electrode plate, the separator includes a porous ...

Disclosed is a separator for a secondary battery that improves the stability of the secondary battery. In one embodiment of the present disclosure, the separator includes: a porous substrate; and a coating layer disposed on at least one surface of the poro...