Patent ID: 9496533
Filing Date: 2016-11-15
CPC Classification: H01M,Y02E,Y02P,Y10T

Claim Text:
1. A cable-type secondary battery having a horizontal cross section and extending in a longitudinal direction, the cable-type secondary battery comprising: a core portion having a gel polymer electrolyte injected thereinto; an inner electrode which includes an open-structured inner current collector surrounding an outer surface of the core portion and an inner electrode active material layer, the inner current collector having an inner surface facing the core portion and an outer surface facing away from the core portion, wherein the inner electrode active material layer is only formed on the outer surface of the inner current collector; a separation layer surrounding an outer surface of the inner electrode; an outer electrode which includes an outer electrode active material layer surrounding an outer surface of the separation layer and an outer current collector surrounding an outer surface of the outer electrode active material layer; and a protective coating layer.