Lithium cobalt oxide, method for manufacturing the same, and nonaqueous electrolyte secondary battery
US7547492B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 2004 |
| Grant date | Jun 16, 2009 |
| Priority date | — |
| Expiry date | Apr 2, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Lithium cobalt oxide, which can provide a nonaqueous electrolyte secondary battery having an excellent initial capacity and an excellent capacity retention, and a method for manufacturing the same are provided. The lithium cobalt oxide has a tap density of at least 1.7 g/cm3 and a pressed density of 3.5 to 4.0 g/cm3. A method for manufacturing the lithium cobalt oxide includes the step of selecting a lithium cobalt oxide (A) and a lithium cobalt oxide (B) so that a difference in the tap density between the lithium cobalt oxide (A) and the lithium cobalt oxide (B) is at least 0.2 g/cm3; and mixing the lithium cobalt oxide (A) and the lithium cobalt oxide (B).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.