Mesophase pitch-based activated carbon fibers and electric double layer capacitor using the same
US6118650A · kind A · utility
18Cited by
5References
3Claims
0Family size
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Key dates
| Filing date | Apr 6, 1998 |
| Grant date | Sep 12, 2000 |
| Priority date | — |
| Expiry date | Apr 6, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Mesophase pitch-based activated carbon fibers which are obtained by milling infusibilized mesophase pitch fibers, as they are or after carbonizing at a temperature of 350 to 1,000.degree. C., to an average particle diameter of 5 to 50 .mu.m and then activating in the presence of an alkali metal compound. The activated carbon fibers have a pore distribution suitable for forming a electric double layer and is excellent as the material for an electrode of an electric double layer capacitor. The electric double layer capacitor having the electrode using the activated carbon fiber exhibits high discharge capacity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.