Positive electrode active material for lithium ion secondary battery and lithium ion secondary battery
US12261292B2 · kind B2 · utility
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Key dates
| Filing date | Jun 30, 2020 |
| Grant date | Mar 25, 2025 |
| Priority date | — |
| Expiry date | May 27, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The positive electrode active material for a lithium ion secondary battery contains a lithium-nickel-manganese composite oxide, in which metal elements constituting the lithium-nickel-manganese composite oxide include lithium, nickel, manganese, cobalt, titanium, niobium, and optionally zirconium, an amount of substance ratio of the elements is represented as Li:Ni:Mn:Co:Zr:Ti:Nb=a:b:c:d:e:f:g (provided that, 0.97≤a≤1.10, 0.80≤b≤0.88, 0.04≤c≤0.12, 0.04≤d≤0.10, 0≤e≤0.004, 0.003<f≤0.030, 0.001<g≤0.006, and b+c+d+e+f+g=1), in the amount of substance ratio, (f+g)≤0.030 and f>g are satisfied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.