Electrode active materials for lithium secondary batteries, method for preparing the same, and lithium secondary batteries using the same
US7674557B2 · kind B2 · utility
24Cited by
8References
9Claims
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Key dates
| Filing date | Sep 19, 2002 |
| Grant date | Mar 9, 2010 |
| Priority date | — |
| Expiry date | Mar 24, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrode active material further comprising an amphoteric compound, an alkali metal sulfide or an alkali metal oxide, and lithium secondary batteries using the electrode active material, are disclosed. The lithium secondary batteries neutralize acids generating around electrode active material so that it can inhibit the reduction in battery capacity. In addition, the lithium secondary batteries are excellent in its charge-discharge characteristics, cycle life and thermal stability. A method for preparing the electrode active material for lithium secondary batteries is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.