ELECTROLYTIC CAPACITOR AND ELECTRODE FOIL FOR ELECTROLYTIC CAPACITOR USED THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a solid electrolytic capacitor having a low ESR characteristic and an electrode foil used therefor. SOLUTION: The capacitor element uses an anode foil set for a porosity of 51% or less after etching and a cathode foil set for a porosity of 44% or less after etching. The capacitor element contains a bond of a water-soluble metal complex with phosphoric acid ions and a solvent containing water as a main component and hence a solid electrolytic capacitor having a low ESR characteristic and an electrode foil used therefor can be obtained.