This invention relates to a
metal foil, a porous
copper foil, a method for preparing the same, and a
lithium-
ion battery using the material. This method allows for the preparation of relatively
thin metal foils, including
copper foil, through a simple, low-cost, and easily industrially scalable approach. Furthermore, the pore size and thickness of the porous
copper foil can be controlled based on the
screen printing pattern, the
height difference between the
screen printing plate and the
titanium plate, and the
electrolysis time. This effectively solves the problems of complex pore size control and excessively thick foils in current
metal foil, especially porous
copper foil, preparation methods.