Electrode Lead, Method of Preparing the Same, and Lithium Secondary Battery Including the Same

Abstract

An electrode lead electrically connected to an electrode assembly, the electrode lead including the following: (1) a metal terminal; and (2) a film layer which is disposed on the metal terminal and has two or more patterns engraved on a surface of the film layer. The two or more patterns are arranged apart from each other at equal intervals in a direction parallel to the film layer, and each of the patterns includes a side surface and a bottom surface. A lithium secondary battery comprises the electrode lead. A method for making the electrode lead includes forming a film layer on a metal terminal by a gravure coating device, where two or more patterns are engraved on a surface of the film layer.

Dependencies are inferred from the claim text.