Composite positive electrode active material, method of preparing the same, positive electrode including composite positive electrode active material,and lithium battery including positive electrode
US12015151B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 19, 2022 |
| Grant date | Jun 18, 2024 |
| Priority date | — |
| Expiry date | May 19, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A composite positive active material represented by Formula 1, LiaNibCOcMndMeO2 Formula 1 wherein, in Formula 1, M is zirconium (Zr), aluminum (Al), rhenium (Re), vanadium (V), chromium (Cr), iron (Fe), gallium (Ga), silicon (Si), boron (B), ruthenium (Ru), titanium (Ti), niobium (Nb), molybdenum (Mo), magnesium (Mg), or platinum (Pt), 1.1≤a≤1.3, b+c+d+e≤1, 0≤b≤0.3, 0≤c≤0.3, 0<d≤0.6, and 0≤e≤0.1, wherein, through atomic interdiffusion of lithium and the metal, the composite positive active material has a uniform distribution of lithium excess regions and a uniform degree of disorder of metal cations, and the metal cations have a disordered, irregular arrangement at an atomic scale. Also a method of preparing the composite positive active material, a positive electrode including the composite positive active material, and a lithium battery including the positive electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.