Lithium-ion capacitor
US7848081B2 · kind B2 · utility
5Cited by
8References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 18, 2007 |
| Grant date | Dec 7, 2010 |
| Priority date | — |
| Expiry date | Jan 1, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention provides a negative electrode material for use with a lithium-ion capacitor, which is high in energy density, output density and excellent in durability. When graphite of which an average distance between 002 lattice planes thereof is within a range from 0.335 nm to 0.337 nm is used for an active material of a negative electrode of a lithium-ion capacitor, the energy density of the capacitor is increased. The output characteristic and the cycle durability can be improved when D10, D50 and D90 are set within predetermined ranges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.