Electrolytic copper foil, method for manufacturing the same, and anode for lithium secondary battery of high capacity

A method for manufacturing an electrolytic copper foil, the method comprising:

• electroplating a copper film on a rotary cathode drum by applying an electric current between an anode plate and the rotary cathode drum which are disposed apart from each other in an electrolyte contained in an electrolytic bath;
• winding the copper film;
• and
• performing an anticorrosion treatment by immersing the copper film into an anticorrosion treatment solution,
• wherein an air is injected into the anticorrosion treatment solution when the anticorrosion treatment is performed.

An anode for a Li secondary battery, the anode comprising:

• a current collector including an electrolytic copper foil having a first surface and a second surface opposite to the first surface;
• and
• anode active material layers on the first and second surfaces,
• wherein the electrolytic copper foil comprises:
• a first protective layer forming the first surface;
• a second protective layer forming the second surface;
• and
• a copper film between the first and second protective layers,
• wherein an oxygen-containing part at the second surface has a thickness (OT) of not less than 1.5 nm,
• the thickness of the oxygen-containing part at the second surface is a SiO2 conversion thickness of a portion of the second protective layer, and
• the portion of the second protective layer is a portion showing a concentration of oxygen component of not less than 10 atom % when measured with AES (Auger Electron Spectroscopy) from the second surface.