Positive active material and lithium-ion battery
US12170363B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 2022 |
| Grant date | Dec 17, 2024 |
| Priority date | — |
| Expiry date | Jun 23, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A positive active material including a first particle and a second particle. The first particle has a chemical formula of LieCog M1-gO2-i, and the second particle has a chemical formula of LifCohN1-hO2-j. M is at least two selected from the group of Ni, Mn, Al, Mg, Ti, La, Y and Zr. N is at least one selected from a group of Ni, Mn, Al, Mg, Ti, La, Y and Zr, and 0.8≤e≤1.2, 0<g<1, −0.1≤i≤0.2, 0.85≤f≤1.2, 0<h<1, −0.1≤j≤0.2, the number of types of the element M in the first particle is greater than the number of types of the element N in the second particles, the particle diameter of the positive active material meets the following formula (3):(Dv90-Dv50)−(Dv50-Dv10)≤2.5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.