CABLE-TYPE SECONDARY BATTERY

摘要

PURPOSE: A cable type secondary battery is provided to have excellent capacity and cycle performance by having a lithium ion supply core part, and to have excellent flexibility by having an open structured internal electrode. CONSTITUTION: A cable type secondary battery(100) comprises a lithium ion supply core part(110) with electrolyte; an internal electrode(120) which comprises an open structured internal current collector, an internal electrode active material layer formed on the surface of the internal current collector, and a first electrolyte absorption layer formed on the exterior of the internal electrode active material layer; a separating layer(130) surrounding the exterior of the internal electrode and preventing the short of an electrode; a second electrolyte absorption layer(140) formed on the surface of the separating layer; and an external electrode which includes an external electrode active material layer(150) and an external current collector(160).