Carbon materials, electrodes and nonaqueous electrolyte secondary cells
US6869546B1 · kind B1 · utility
1Cited by
8References
74Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 23, 2000 |
| Grant date | Mar 22, 2005 |
| Priority date | — |
| Expiry date | May 23, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
For us in nonaqueous electrolyte secondary cells, the invention provides an electrode which comprises a first carbon material serving as a core material, and a second carbon material coating the first carbon material over the surface thereof and containing boron. When used as an active substance for negative electrode to provide a nonaqueous electrolyte secondary cell, the electrode diminishes the reduction of the cell capacity that would result if the cell is allowed to store, giving improved storage characteristics to the cell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.