Flexible jelly-roll type secondary battery

A jelly-roll type electrode assembly including a cathode including a cathode active material coating layer formed by coating both surfaces of a cathode current collector with a cathode active material, and an electrode tap;

• an anode including an anode active material coating layer formed by coating both surfaces of an anode current collector with an anode active material, and an electrode tap;
• and a separation film interposed between the anode and the cathode, the jelly-roll type electrode assembly being formed to be rolled,
• the jelly-roll type electrode assembly characterized in that,
• the anode and the cathode include uncoated portions not coated with a cathode active material and an anode active material, the uncoated portions are overlapped with each other on the respective cathodes and anodes and include mirror images formed on a front surface and a rear surface thereof based on a jelly-roll formed central surface, and the jelly-roll type electrode assembly is flexible in the uncoated portion.