Electrode for electric double-layer capacitor, and slurry for forming the same
US6800222B1 · kind B1 · utility
17Cited by
3References
3Claims
0Family size
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Key dates
| Filing date | Aug 9, 2000 |
| Grant date | Oct 5, 2004 |
| Priority date | — |
| Expiry date | Aug 20, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/13
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In an electric double-layer capacitor, a solution of a quaternary ammonium borofluoride compound in propylene carbonate is used as an electrolyte. The electrode includes alkali-activated carbon made using meso-phase pitch as a starting material, and a conductive filler having a rest potential smaller than that of the alkali-activated carbon in the electrolyte. The amount Fc of conductive filler incorporated in the electrode is set in a range of 10% by weight≦Fc≦40% by weight. Such electric double-layer capacitor has a large electrostatic capacity and excellent durability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.