Electrode assembly and secondary battery including the same

An electrode assembly and a secondary battery including the same are disclosed. An electrode assembly includes a positive electrode including a positive electrode coating portion coated on a surface of a positive electrode collector; a negative electrode including a negative electrode coating portion coated on a surface of a negative electrode collector; and a separator between the positive and negative electrodes. The positive electrode and the negative electrode are stacked, and the positive electrode coating portion and the negative electrode coating portion on surfaces facing each other have a same area, or an area of the positive electrode coating portion is greater than an area of the negative electrode coating portion within a tolerance range.