Electrolytic capacitor and method for producing same
US10943743B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2019 |
| Grant date | Mar 9, 2021 |
| Priority date | — |
| Expiry date | Feb 7, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01G9/0036
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrolytic capacitor includes an anode body, a dielectric layer disposed on the anode body, a solid electrolyte layer disposed on the dielectric layer, and a cathode lead-out layer disposed on the solid electrolyte layer. The solid electrolyte layer contains a first conductive polymer having a thiophene skeleton and a second conductive polymer having an aniline skeleton. In the solid electrolyte layer, a mass ratio of the second conductive polymer with respect to a total mass of the first conductive polymer and the second conductive polymer in a region close to the dielectric layer is greater than a mass ratio of the second conductive polymer with respect to a total mass of the first conductive polymer and the second conductive polymer in a region close to the cathode lead-out layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.