Nonaqueous electrolyte secondary battery having a negative electrode containing carbon fibers and carbon flakes
US7172837B2 · kind B2 · utility
1Cited by
2References
20Claims
0Family size
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Key dates
| Filing date | Jun 8, 2004 |
| Grant date | Feb 6, 2007 |
| Priority date | — |
| Expiry date | Jun 8, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A nonaqueous electrolyte secondary battery is provided with a positive electrode including a positive-electrode active material, a negative electrode including a negative-electrode active material, and a nonaqueous electrolyte solution. The negative electrode further includes carbon fibers and carbon flakes. The synergistic effects of the improved retention of the electrolyte solution by the carbon fibers and the improved conductivity between the active material particles by the carbon flakes facilitate doping/undoping of lithium in a high-load current mode and increase the capacity of the battery in the high-load current mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.