To provide an electrolytic capacitor which has such excellent reliability that an ESR is low, an electrostatic capacity is large, and a withstanding voltage is high, and a manufacturing method thereof.
The electrolytic capacitor has a capacitor element constituted by winding via separator anode foil having a formed dielectric oxidation film and cathode foil subjected to surface expansion processing, a driving electrolyte wherewith the capacitor element is impregnated, an armored case having a bottom and for storing the capacitor element and a sealing material for sealing an opening of the armored case. The electrolytic capacitor is constituted by stacking conductive macromolecular fine particles on the fiber surfaces of the separator, filling them between the fibers of the separator, and further more stacking them on surfaces of the anode and cathode foil.
MATSUURA HIROYUKI
| JP2003100561A | 2003-04-04 |
Hiroki Naito
Daisuke Nagano