After the aluminum material is processed into foil, the electronic aluminum foil undergoes surface corrosion treatment and re-oxidation treatment, and then is wound to make a capacitor. The aluminum foil before corrosion is called light foil, the aluminum foil after corrosion is called corrosion foil, and the aluminum foil after re-oxidation is called finished foil. Electronic aluminum foil refers to light foil and is a key raw material for the production of aluminum electrolytic capacitors.
The electrode foil includes corrosion foil and chemical foil. Electronic aluminum foil can be divided into high-voltage anode foil, low-voltage anode foil, negative electrode foil, etc. Among them, high- and low-voltage anode foils (formation foils) require more than 99.99% high-purity aluminum. The thickness of high-voltage anode foil is 0.0065-0.11mm, and the thickness of low-voltage anode foil is 0.04~0.1mm.
