Electrolytic solution for driving electrolytic capacitor and electrolytic capacitor
US7539006B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2006 |
| Grant date | May 26, 2009 |
| Priority date | — |
| Expiry date | Dec 18, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01G9/035
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrolytic capacitor using an electrolytic solution constituted by a solvent consisting of from 20 to 80 wt % of an organic solvent and from 80 to 20 wt % of water, the electrolytic capacitor comprising a nitro or nitroso compound except for nitrophenol, nitrobenzoic acid, dinitrobenzoic acid, nitrophenone and nitroanisole, in a portion inside the capacitor other than in the electrolytic solution. The electrolytic capacitor exhibits a low impedance, excellent low temperature stability and good life characteristics, and further, is excellent in the effect to absorb a hydrogen gas, even when use is made of an electrolyte solution employing mixed solvent having a great water content and when an electrolytic capacitor is used under a high temperature condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.