ELECTRODE ASSEMBLY, BATTERY CELL, AND BATTERY MODULE COMPRISING SAME

An exemplary embodiment of the present disclosure provides an electrode assembly including: a positive electrode; a negative electrode; a separator arranged between the positive electrode and the negative electrode; and an electrode lead connected to the positive electrode or the negative electrode, wherein the electrode lead includes a first conductor portion, and a second conductor portion joined to the first conductor portion.In addition, in the electrode assembly according to an exemplary embodiment of the present disclosure, the first conductor portion is made of a first metal, and the second conductor portion is made of a second metal different from the first metal, thereby enabling a lead material, which is relatively unaffected by redox potential of a battery, to be selected and improving heat dissipation characteristics through the use of the lead material having high thermal conductivity.