NOVELTY - A flexible jelly roll-type secondary battery has a negative electrode having a negative electrode active material coating layer formed by coating a negative electrode active material on a negative electrode current collector, a positive electrode having a positive electrode active material coating layer formed by coating a positive electrode active material on a positive electrode current collector, and a separation film (13) interposed between the negative and positive electrodes. The jelly roll-type electrode assembly is formed by winding.    USE - Flexible jelly roll-type secondary battery is used for cellular phone, handheld computer, smart phone, smart pad, netbook, light-electronic vehicle, electric vehicle, hybrid electric vehicle, plug-in hybrid electric vehicle and power storage system (all claimed).    ADVANTAGE - The jelly roll type electrode assembly bends at non-coated portion, and has suppressed delamination of the electrode active material from surface of the current collector.    DETAILED DESCRIPTION - A flexible jelly roll-type secondary battery has a negative electrode having a negative electrode active material coating layer formed by coating a negative electrode active material on a negative electrode current collector, a positive electrode having a positive electrode active material coating layer formed by coating a positive electrode active material on a positive electrode current collector, and a separation film (13) interposed between the negative and positive electrodes. The jelly roll-type electrode assembly is formed by winding. The positive electrode and the negative electrode have non-coated portions (11) on which the negative electrode active material and the positive electrode active material are not coated. The non-coated portions are formed such that the non-coated portions of the wound and stacked negative and positive electrodes are overlapped with each other, to form a mirror image on a front surface and back surface of jelly roll.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the electrode assembly.    Cathode active material coating layer (10a)    Non-coated portions (11)    Cathode tabs (12a, 12b)    Separation film (13)