Positive electrode active material precursor for lithium secondary battery, positive electrode active material manufactured by using thereof, and lithium secondary battery including the same
US10950856B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 8, 2019 |
| Grant date | Mar 16, 2021 |
| Priority date | — |
| Expiry date | Jan 8, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Positive electrode active materials are provided. The positive electrode active materials include a primary particle formed of a plurality of metals including a first metal and a secondary particle formed of at least one of the primary particle. The secondary particle includes a center part, a surface part, a seed region where the primary particle having concentration gradient of the first metal is disposed, and a maintain region where the primary particle having constant concentration of the first metal is disposed, the seed region adjacent to the core part and a maintain region adjacent to the surface part, the length of the seed region in a direction from the center part to the surface part is 1 μm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.