JELLY-ROLL ELECTRODE ASSEMBLY AND SECONDARY BATTERY COMPRISING THE SAME

A jelly-roll electrode assembly includes a cathode sheet, an anode sheet, and a separator interposed between the cathode sheet and the anode sheet, the cathode sheet, the anode sheet, and the separator being wound together. An outermost side of the jelly-roll electrode assembly includes a non-coated portion on which no active material layer is provided on the anode sheet. A swelling tape is located on an inner surface of the non-coated portion of the anode sheet facing toward a central part of the jelly-roll electrode assembly. One or more embossments or wrinkles are provided in the swelling tape.