abstract |
[PROBLEMS] To provide an electrolytic capacitor having low ESR characteristics. In the present invention, the foil resistivity per unit area is 0.4 to 0.79 mΩ, the foil width is 8 to 25 mm, Since a capacitor element having an anode foil or a cathode foil having a foil area of 1500 mm 2 or more contains a binder in which a phosphate ion is bonded to a water-soluble metal complex and a solvent containing water as a main component, the electrode foil , 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 terminal is also reduced, so that an electrolytic capacitor having low ESR characteristics can be obtained. |