Lithium-manganese composite oxide, and method for producing same, and positive electrode material, positive electrode and lithium ion secondary battery using same
US11552295B2 · kind B2 · utility
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Key dates
| Filing date | Feb 4, 2021 |
| Grant date | Jan 10, 2023 |
| Priority date | — |
| Expiry date | Apr 2, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lithium-manganese composite oxide containing a lithium-iron-manganese composite oxide represented by the composition formula. Li1+x−w(FeyNizMn1−y−z)1−xO2−δ, where 0<x<⅓, 0≤w<0.8, 0<y<1, 0<z<0.5, y+z<1, and 0≤δ<0.5, in which at least in a state of charge of a lithium ion battery using the lithium-manganese composite oxide as a positive-electrode active material, at least some of iron atoms are pentavalent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.