| abstract |
Disclosed are a lithium secondary battery electrode comprising a perforated current collector, a manufacturing method therefor, and a lithium secondary battery comprising the electrode, the electrode allowing active materials to be coupled to each other through the perforated part of the perforated current collector and, simultaneously, enabling an increase in the energy density of a battery according to a decrease in weight even if a conductive material and a binder, which are the essential elements of a conventional electrode mixture, and a wetting process are excluded. The lithium secondary battery electrode comprises: a first electrode active material layer; a second electrode active material layer; and a perforated current collector interposed between the first electrode active material layer and the second electrode active material layer, wherein the first electrode active material layer and the second electrode active material layer are coupled to each other through the perforated part of the current collector. |