Positive electrode active material for lithium secondary battery and preparation method thereof
US12249712B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 2024 |
| Grant date | Mar 11, 2025 |
| Priority date | — |
| Expiry date | Mar 19, 2044 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A positive electrode active material in the form of a single particle and a lithium secondary battery containing the positive electrode active material thereof are provided. The positive electrode active material has a nickel-based lithium composite metal oxide single particle. The single particle includes a metal doped in the crystal lattice thereof. The single particle includes, in the crystal lattice, a surface part having a rock salt structure, a spinel structure, or a mixed structure thereof from a surface of the single particle to a depth of 0.13% to 5.26% of a radius of the single particle, and a central part having a layered structure from an interface with the surface part thereof to the center part of the single particle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.