| abstract |
[PROBLEMS] To provide an electrolytic capacitor having low ESR characteristics. In the present invention, the withstand voltage is 20.5V. The capacitance per unit etching loss is 5.5μ F / mg or more, foil resistivity per unit area is 0.4 ~ 0.79mΩ, foil width 8-25mm, foil area 1500 Since the capacitor element having an anode foil or a cathode foil having a thickness of 2 mm or more contains a conjugate in which a phosphate ion is bonded to a water-soluble metal complex and a solvent mainly composed of water, the resistance of the electrode foil is reduced. And the resistance of the electrolyte between the electrode foils is reduced, and the contact resistance at the junction between the electrode foil and the electrode lead-out terminal is also reduced, so that an electrolytic capacitor having low ESR characteristics can be obtained. |