Electrolytic capacitor and method for manufacturing same
US11189429B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2018 |
| Grant date | Nov 30, 2021 |
| Priority date | — |
| Expiry date | Dec 21, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01G9/15
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for manufacturing an electrolytic capacitor includes: preparing an anode body that includes a dielectric layer, and forming a solid electrolyte layer on the dielectric layer. The forming of the solid electrolyte layer includes: forming a first conductive polymer layer on the dielectric layer, applying a first treatment liquid to the first conductive polymer layer, and forming a second conductive polymer layer after the applying of the first treatment liquid. The first conductive polymer layer includes a first conductive polymer. The first treatment liquid contains a first compound and a solvent. The first compound has a skeleton of naphthalene or anthraquinone, and includes at least one SO3-containing group bonded to the skeleton. The at least one SO3-containing group is at least one selected from a group consisting of a sulfonic acid group and a sulfonate group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.