CABLE-TYPE SECONDARY BATTERY

摘要

The cable-type secondary battery of the present invention comprises: an inner electrode including a thin and long first polar current collector having a cross section in the shape of a circle, an oval, or a polygon when crossing at a right angle therewith in the direction of the length thereof, a first polar electrode active material layer formed on the outer surface of the first polar current collector, and a first polar electrode having an electrolyte layer filled so as to surround the first polar electrode active material layer; and one or more wire-type second polar electrodes, enshrouding the whole inner electrode, and wound on the outer surface thereof. The cable-type secondary battery having the wound outer electrode of the present invention has an excellent fusibility and prevents the abscission of the active material.