Secondary battery and device containing same
US11626589B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 29, 2021 |
| Grant date | Apr 11, 2023 |
| Priority date | — |
| Expiry date | Dec 29, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This application discloses a secondary battery and a device containing the secondary battery. A positive active material of the secondary battery includes one or more of lithium nickel cobalt manganese oxide, lithium nickel cobalt aluminum oxide, and a modified material thereof. A negative active material of the secondary battery includes a silicon-oxygen compound and graphite. A separator of the secondary battery includes a substrate and a coating layer. The secondary battery satisfies: where ED≥270 Wh/Kg, 11 μm≤D50≤18.5 μm, 11 μm≤DC50≤20 μm. The secondary battery according to this application achieves relatively high cycle performance while achieving a relatively high energy density concurrently.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.