Lithium nickel manganese cobalt composite oxide as a positive electrode active material for rechargeable lithium ion batteries
US12294077B2 · kind B2 · utility
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15Claims
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Key dates
| Filing date | Jul 2, 2020 |
| Grant date | May 6, 2025 |
| Priority date | — |
| Expiry date | Feb 6, 2042 |
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 powder suitable for lithium-ion batteries, comprising lithium transition metal-based oxide particles, said particles comprising a core and a surface layer, said surface layer being on top of said core, said particles comprising the elements: Li, M′ and oxygen, wherein M′ has a formula: M′=NizMnyCoxAk, wherein A is a dopant, 0.60≤z≤0.86, 0.05≤x≤0.20, x+y+z+k=1, and k≤0.01,said positive electrode active material powder having a median particle size D50 ranging from 5 μm to 15 μm and a surface layer thickness ranging from 10 nm to 200 nm,said surface layer comprising:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.