Method for producing porous copper foil

摘要

The present invention provides a method for producing a porous copper foil. The method of the present invention includes the steps of forming an oxide film by providing a chromium-containing compound to a metal surface of a cathode; forming a copper foil on the oxide film by performing electrolysis of copper; and removing the copper foil from the metal surface of the cathode. The method of the present invention is simple and time-saving, and the porous copper foil of the present invention has reduced roughness difference between both sides of the porous copper foil.

主权项

1. A method for producing a porous copper foil, comprising the steps of:
transferring a chromium-containing compound to a metal surface of a cathode, the transferring of the chromium-containing compound to the metal surface being achieved without applying voltage on the metal surface; rotating the cathode comprising the chromium containing compound into immediate contact with an electrolytic solution, the electrolytic solution comprising copper ions; depositing a copper foil on the cathode containing the chromium-containing compound by performing electrolysis of copper; and removing the copper foil from the metal surface of the cathode to obtain a porous copper foil having a difference in surface roughness Rz between the as deposited matte side and the as deposited shiny side of the copper foil in the range of 1.85-3.36 μm.