Positive electrode active material, positive electrode plate, lithium-ion secondary battery, and apparatus
US12300816B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2023 |
| Grant date | May 13, 2025 |
| Priority date | — |
| Expiry date | Jun 1, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present application discloses a positive electrode active material, a positive electrode plate, a lithium-ion secondary battery, and an apparatus. The positive electrode active material satisfies a chemical formula Li1+x(NiaCobMnc)1-dMdO2-yAy, wherein M is one or more selected from Zr, Sr, B, Ti, Mg, Sn and Al, A is one or more selected from S, N, F, Cl, Br and I, −0.01≤x≤0.2, 0.12≤b/c≤0.9, 0.002≤b×c/a2≤0.23, a+b+c=1, 0≤d≤0.1, and 0≤y<0.2; and an interval particle size distribution curve of the positive electrode active material has a full width at half maximum DFW of from 4 μm to 8 μm. The positive electrode active material provided in the present application has relatively low cobalt content and relatively high cycle life and capacity performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.