NOVELTY - A cable-type secondary battery (100) has a lithium-ion supply core portion (110), an inner electrode (120) provided with an inner current collector, an inner-electrode active material layer and an electrolyte absorbing layer (e1), a separation layer which encases outer surface of inner electrode, an electrolyte absorbing layer (140) formed on surface of separation layer and an outer electrode which encases outer surface of electrolyte absorbing layer (140), and provided with an outer-electrode active material layer (150) and an outer current collector (160).    USE - Cable-type secondary battery is used for electric vehicle and hybrid vehicle.    ADVANTAGE - The cable-type secondary battery has excellent flexibility, capacity and cycling characteristics.    DETAILED DESCRIPTION - A cable-type secondary battery has a lithium-ion supply core portion, an inner electrode having an open structure provided with an inner current collector which encases outer surface of lithium-ion supply core portion, an inner-electrode active material layer formed on surface of inner current collector and an electrolyte absorbing layer (e1) formed on surface of inner-electrode active material layer, a separation layer for preventing short circuit of electrode, which encases outer surface of inner electrode, an electrolyte absorbing layer (140) formed on surface of separation layer and an outer electrode which encases outer surface of electrolyte absorbing layer (140), and provided with an outer-electrode active material layer and an outer current collector. The cable-type secondary battery has horizontal cross-section with specific shape and extends along the lengthwise direction.    DESCRIPTION OF DRAWING(S) - The drawing shows the sectional view of the cable-type secondary battery.    Cable-type secondary battery (100)    Core portion (110)    Inner electrode (120)    Electrolyte absorbing layer (140)    Outer-electrode active material layer (150)    Outer current collector (160)