Electrode assembly and secondary battery including the same

An electrode assembly according to one exemplary embodiment of the present disclosure includes a unit cell including a positive electrode plate, a separator and a negative electrode plate, an electrode tab that is protruded from at least one of the positive electrode plate and the negative electrode plate, and an electrode lead that is connected to the electrode tab, wherein an elliptical hole is formed in a portion of the electrode tab adjacent to an overlapping portion of the electrode tab and the electrode lead.