CABLE-TYPE SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME

摘要

The present invention provides a cable-type secondary battery that extends in a longitudinal direction with a predetermined horizontal sectional shape, comprising: a hollow core portion into which a gel polymer electrolyte is injected; an internal electrode that has an internal collector which is formed to surround an outer surface of the hollow core portion and an internal electrode active material layer which is formed on a surface of the internal collector; a separation layer that is formed to surround an outer surface of the internal electrode; an external electrode that has an external electrode active material layer which is formed to surround an outer surface of the separation layer and an external collector which is formed to surround an outer surface of the external electrode active material layer; and a protective film.