Device to prevent overpressure in a capacitor or ultracapacitor
US8564932B2 · kind B2 · utility
0Cited by
7References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2009 |
| Grant date | Oct 22, 2013 |
| Priority date | — |
| Expiry date | Jul 27, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/13
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a device to prevent overpressure in a supercapacitor. In a supercapacitor comprising a closed chamber fitted with means for exchanging a gas with the external surroundings and in which there are positioned two electrodes with a high specific surface area, separated by a separator, the separator and the electrodes being impregnated with an electrolyte, the means for exchanging a gas comprise a metallic membrane that is permeable to hydrogen and its isotopes and impermeable to gaseous species which have an effective cross section of 0.3 nm or higher, at a temperature of between −50° C. and 100° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.