Electrode assembly for secondary batteries and lithium secondary battery including the same
US9761865B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2014 |
| Grant date | Sep 12, 2017 |
| Priority date | — |
| Expiry date | Sep 18, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed are an electrode assembly for secondary batteries and a lithium secondary battery including the same. More particularly, an electrode assembly including a cathode, an anode and a separator, wherein the cathode includes a lithium cobalt-based oxide, and a lithium nickel-based composite oxide forming a coating layer over a surface of the lithium nickel-based composite oxide by reacting with a fluorine-containing polymer, as a cathode active material, the anode includes carbon and a silicon oxide as an anode active material, an operating voltage is 2.50 V to 4.35 V, and the cathode active material has high rolling density by a bimodal form in which an average diameter of the cobalt-based oxide and an average diameter of the lithium nickel-based composite oxide are different, and a lithium secondary battery including the same are disclosed. In addition, an electrode assembly including a lithium cobalt-based oxide surface-coated with alumina (Al2O3), and a lithium secondary battery including the same are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.