Electrode assembly and rechargeable battery including the same

An electrode assembly that is spiral-wound about a winding axis, the electrode assembly comprising:

• a first electrode including:
• a first sub-electrode portion in which a first active material layer is respectively formed on both surfaces of a first base substrate,
• a second sub-electrode portion in which the first active material layer is formed on only one surface of the first base substrate, and
• a first electrode uncoated region extending from the first sub-electrode portion;
• a second electrode including:
• a third sub-electrode portion in which a second active material layer is respectively formed on both surfaces of a second base substrate,
• a fourth sub-electrode portion in which the second active material layer is formed on only one surface of the second base substrate, and
• a second electrode uncoated region extending from the third sub-electrode portion;
• and
• a separator between the first electrode and the second electrode,
• wherein:
• the second active material layer at the third sub-electrode portion includes a protruding portion protruding therefrom, and
• a lateral distance from the end of the first active material layer, disposed at either a top side or a bottom side of the third sub-electrode portion, to an inner boundary of the protruding portion is greater than 0 and less than 3 mm.