Lithium secondary battery
US10263255B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Sep 9, 2016 |
| Grant date | Apr 16, 2019 |
| Priority date | — |
| Expiry date | Sep 9, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lithium secondary battery includes a cathode electrode, an anode electrode, and a separation film installed between the cathode electrode and the anode electrode, wherein the cathode electrode includes a cathode active material containing lithium-metal oxide of which at least one of metals has a concentration gradient region between a core part and a surface part thereof, and the separation film includes a base film and a ceramic coating layer formed on at least one surface of the base film, such that it is possible to achieve a significantly improved effect in both of the lifespan property and penetration durability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.