Positive electrode active material for secondary battery, positive electrode for secondary battery and secondary battery comprising the same
US11101462B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 2016 |
| Grant date | Aug 24, 2021 |
| Priority date | — |
| Expiry date | Dec 27, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a positive electrode active material for a secondary battery, a positive electrode for a secondary battery, and a secondary battery including the same, the positive electrode active material including a first lithium-nickel oxide particle having an average particle size (D50) of more than 8 μm to 20 μm or less, and a second lithium-nickel oxide particle having an average particle size (D50) of 8 μm or less, wherein the first lithium-nickel oxide particle has a particle strength of 100 MPa to 250 MPa, the second lithium-nickel oxide particle has a particle strength of 50 MPa to 100 MPa, a ratio r of the strength of the first lithium-nickel oxide particle to the strength of the second lithium-nickel oxide particle satisfies Equation 1 set forth herein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.