IMPROVEMENTS IN THE PRODUCTION OF ELECTROLYTIC CAPACITOR

摘要

A method for the production of a precursor anode for an electrolytic capacitor comprises the steps of: a) forming an anode body from a suitable anode metal or metal alloy; b) subjecting the anode body to electro-deoxidation, whereby it undergoes electrolysis in a molten salt electrolyte under conditions so as to remove some undesired oxygen from the metal or metal alloy; c) washing the anode body to remove the electrolyte; and, d) depositing a dielectric layer on the anode body to form the precursor anode. The method is particularly suitable for producing porous tantalum anodes for solid electrolytic capacitors.