Lithium metal composite oxide powder, positive electrode active substance for lithium secondary battery, positive electrode, and lithium secondary battery
US11990617B2 · kind B2 · utility
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Key dates
| Filing date | Mar 13, 2019 |
| Grant date | May 21, 2024 |
| Priority date | — |
| Expiry date | May 3, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lithium metal composite oxide powder including: secondary particles that are aggregates of primary particles, and single particles that are present independently of the secondary particles, wherein the lithium metal composite oxide is represented by composition formula (I), and the single particles have an average crushing strength exceeding 80 MPa: Li[Lix(Ni(1-y-z-w)CoyMnzMw)1-x]O2 (I) wherein M is one or more metal elements selected from the group consisting of Fe, Cu, Ti, Mg, Al, W, B, Mo, Nb, Zn, Sn, Zr, Ga, La and V, −0.1≤x≤0.2, 0≤y≤0.4, 0≤z≤0.4, and 0≤w≤0.1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.