Electrode assembly and secondary battery comprising the electrode assembly

An electrode assembly comprising:

• a first electrode;
• a second electrode;
• and
• a separator between the first electrode and the second electrode,
• wherein the first electrode, the second electrode, and the separator are wound such that the electrode assembly has a first diameter in a first direction and a second diameter in a second direction, with the second diameter being smaller than the first diameter,
• wherein the first electrode comprises a first current collector including a first uncoated portion, and a first active material layer is provided on the first current collector,
• wherein the second electrode comprises a second current collector including a second uncoated portion, and a second active material layer is provided on the second current collector,
• wherein a first electrode tab is coupled to the first uncoated portion,
• wherein a second electrode tab is coupled to the second uncoated portion,
• wherein a first insulating member covers a boundary region between the first uncoated portion and the first active material layer,
• wherein a second-first insulating member surrounds the first electrode tab,
• wherein a second-second insulating member surrounds the second electrode tab, and
• wherein the first insulating member on the first active material layer does not overlap with the second-first insulating member in the direction of the second diameter.