Electrolytic copper foil uses titanium anode
As one of the basic materials in the electronics industry, electrolytic copper foil is mainly used to manufacture printed circuit boards (PCBs) and lithium-ion batteries. It is widely used in home appliances, communications, computing (3C), new energy industries, etc. In recent years, with the development of 5G and lithium battery industries, there have been higher and newer requirements for copper foil. Ultra-low profile copper foil for 5G and ultra-thin copper foil for lithium batteries have become new directions for the development of copper foil technology. .
Brief description of production process
Although the specifications and properties of electrolytic copper foil vary from copper foil manufacturing company to company, the manufacturing process is basically the same. That is, electrolytic copper or scrap copper wire with the same purity as electrolytic copper is used as raw material, dissolved in sulfuric acid to make an aqueous solution of copper sulfate, and a metal roller is used as the cathode, and the surface of the cathode roller is continuously electrolyzed through electrolysis reaction The process of depositing metallic copper while continuously stripping it from the cathode roller is called a green foil electrolysis process. The side that is finally peeled off from the cathode (smooth side) is the side seen on the surface of the laminate or printed circuit board, and the reverse side (commonly known as the matte side) is the side that requires a series of surface treatments and is bonded to the resin in the printed circuit board. Copper foil for lithium batteries achieves the production of double-sided copper foil by controlling the organic additive components of the electrolyte during the foil production process.
Principle of electrolysis
Under the action of the electric field, the cations in the electrolyte migrate to the cathode, and electrons are obtained on the cathode and are reduced. The anions migrate towards the anode, lose electrons and are oxidized. Connect two electrodes in the copper sulfate solution and apply direct current. At this time, you will find copper and hydrogen gas precipitating on the cathode. The response is as follows:
Cathode: Cu2+ +2e → Cu
2H+ +2e → H2↑
Anode: 4OH- -4e → 2H2O + O2↑
2SO42-+2H2O -4e → 2H2SO4 + O2↑
After the cathode surface is treated to a certain extent so that the copper layer deposited on the cathode can be peeled off, a copper skin of a certain thickness will be obtained. Copper sheet with certain functions is called copper foil.
Company: Baoji Dynamic Trading Co., Ltd
Country:China
Add:Baoti road,Jintai,Baoji city,Shaanxi,China
Cel:+86 18391896637(WHATSAPP)
Gmail:alisa@jmyunti.com
Website:www.jm-titanium.com
