Hybrid electrolytic capacitor and method for manufacturing same
US11929214B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2020 |
| Grant date | Mar 12, 2024 |
| Priority date | — |
| Expiry date | Feb 10, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01G9/145
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided is a hybrid electrolytic capacitor having large capacitance, low ESR, and superior high-frequency characteristics and high-temperature endurance. The hybrid electrolytic capacitor 1 is provided with: a cathode 10 having a cathode substrate 11 made of a valve metal, an oxide layer 12 provided on a surface of the cathode substrate 11, an inorganic conductive layer 13 provided on a surface of the oxide layer 12 and including an inorganic conductive material, and an organic conductive layer 14 provided on a surface of the inorganic conductive layer 13 and including a conductive polymer; an anode 20 having an anode substrate 21 made of a valve metal and a dielectric layer 22 provided on a surface of the anode substrate 21; and a composite electrolyte layer 30 having a solid electrolyte layer 31 containing conductive polymer particles 31a which is provided between and in contact with the organic conductive layer 14 of the cathode 10 and the dielectric layer 22 of the anode 20, and an electrolytic solution 32 filled between the conductive polymer particles 31a in the solid electrolyte layer 31.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.