Mixed cathode active material having improved power characteristics and lithium secondary battery including the same
US8741482B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 2012 |
| Grant date | Jun 3, 2014 |
| Priority date | — |
| Expiry date | May 9, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Provided are a mixed cathode active material including layered structure lithium manganese oxide expressed as Chemical Formula 1 and a second cathode active material having a plateau voltage profile in a range of 2.5 V to 3.3 V, and a lithium secondary battery including the mixed cathode active material. The mixed cathode active material and the lithium secondary battery including the same may have improved safety and simultaneously, may be used in an operating device requiring the foregoing battery by widening a state of charge (SOC) range able to maintain power more than a required value by allowing the second cathode active material to complement low power in a low SOC range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.