Negative material for rechargeable lithium battery and method of preparing the same
US6399250B1 · kind B1 · utility
1Cited by
3References
11Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 23, 1999 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Nov 23, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A negative active material for a rechargeable lithium battery having the high content of boron is provided. A mixed solution including a pitch, a boron compound and a solvent is prepared and the solvent is removed from the mixed solution to prepare mesophase pitch. The mesophase pitch is then carbonized and the carbonized material is graphitized to obtain the negative active material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.