Composite cathode active material and secondary battery including the same
US11217785B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 15, 2018 |
| Grant date | Jan 4, 2022 |
| Priority date | — |
| Expiry date | Jul 7, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A composite cathode active material including: a core particle; a first coating layer; and a second coating layer; wherein the core particle includes a cathode active material, the first and second coating layers cover a surface of the core particle, the first coating layer includes a first lithium-containing compound, wherein the first lithium-containing compound includes zirconium, niobium, titanium, aluminum, or a combination thereof, the second coating layer includes a second lithium-containing compound, wherein the second lithium-containing compound includes germanium, niobium, gallium, or a combination thereof, and the first lithium-containing compound is different from the second lithium-containing compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.