The current collector 500 is commonly used in the secondary battery field, and any material which does not cause chemical change during battery operation and has high conductivity may be used. As a specific example, as the current collector, copper, stainless steel, aluminum, nickel, titanium, calcined carbon, graphene, carbon nanotubes, or aluminum, or stainless steel which is surface-treated with carbon, nickel, titanium, silver, graphene, carbon nanotubes, and the like, may be used. The current collector may be in the form of foam, film, mesh, felt, or perforated film. In addition, the current collector may have surface irregularities formed on the surface. The current collector having surface irregularities including a protrusion structure formed may have an increased binding area to increase binding force between the active material film and the current collector, and allow charge transfer to occur more easily.
The present invention includes an electrode for a secondary battery produced by the production method described above. Here, the secondary battery may be an electrolyte solution-based secondary battery, specifically a secondary battery including a positive electrode; a negative electrode; a separator interposed between the positive electrode and the negative electrode; and an electrolyte solution. In addition, the secondary battery includes a lithium secondary battery.
The present invention includes a lithium secondary battery including the electrode for a secondary battery produced by the production method described above. The electrode for a secondary battery produced by the production method described above in the secondary battery may be a positive electrode, a negative electrode, or a positive electrode and a negative electrode.
Also or independently, the present invention provides an electrode for a secondary battery.