Electric double layer capacitor
US6507480B2 · kind B2 · utility
10Cited by
0References
10Claims
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Assignee
Inventors
Key dates
| Filing date | Feb 22, 2002 |
| Grant date | Jan 14, 2003 |
| Priority date | — |
| Expiry date | Feb 22, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/13
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric double layer capacitor of the present invention having a capacitor element and an electrolyte arranged in a case sealed with a sealer, and further includes in the case a solid buffer for suppressing fluctuation in pH of the electrolyte. The solid buffer includes a compound selected from an oxide and a hydroxide. An element contained in the compound is at least one selected from the group consisting of Be, Al, Si, Sc, V, Cr, Fe, Ni, Cu, Zn, Ga, Ge, Y, Zr, Mo, Ag, Cd, In, Te, La, Ce, Pr, Nd, Pm, Gd, Dy, Ho, Er, Tm, Lu, W and Pb.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.