Electrolytic capacitor and manufacturing method therefor

摘要

An electrolytic capacitor includes a capacitor element, and an electrolyte solution with which the capacitor element is impregnated. The capacitor element includes an anode foil having a dielectric layer on a surface thereof, and a solid electrolyte layer including a conductive polymer and in contact with the dielectric layer of the anode foil. The electrolyte solution contains at least one of polyalkylene glycol and a derivative of polyalkylene glycol, and at least one of diphenyl amine, naphthol, nitrophenol, catechol, resorcinol, hydroquinone, and pyrogallol.

主权项

1. An electrolytic capacitor comprising:
a capacitor element having:
an anode foil having a dielectric layer thereon; anda solid electrolyte layer including a conductive polymer and in contact with the dielectric layer, and an electrolyte solution with which the capacitor element is impregnated, wherein the electrolyte solution contains:
a solvent including at least one of polyalkylene glycol and derivatives thereof, anda component including at least one of diphenyl amine, naphthol, nitrophenol, catechol, resorcinol, hydroquinone, pyrogallol, trimellitic acid, pyromellitic acid, boric acid, boric-acid compounds, phosphoric acid, phosphoric-acid compounds, and complexes of mannitol and boric acid.