Positive electrode material based on a lithiated layered oxide coated, in whole or in part, with another manganese-based oxide, and method for the preparation thereof
US11784304B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2018 |
| Grant date | Oct 10, 2023 |
| Priority date | — |
| Expiry date | Mar 26, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Positive electrode material for a lithium battery comprises a lithiated metal layered oxide comprising metal elements arranged in layers of metal cations and lithium arranged in interlayers of lithium cations and, in part, in the layers of metal cations, the oxide has a stack arrangement 02 and corresponds to the formula (I): Li(a+b)NicMndCoeMfOg (I) wherein: *a represents the proportion of lithium in the interlayers, 0<a<1; *b represents the proportion of lithium in the layers of metal cations, 0<b<⅓; *c, d, e and f are between 0 and 1 and b+c+d+e+f=I; *1.9<g<2.1; *when f≠0, M is one or more of Al, Fe, Ti, Cr, V, Cu, Mg, Zn, Na, K, Ca, Sc; wherein the oxide is coated with an oxide of the formula (II): MnhM′iO2 (M) wherein: *0<h≤1.5, preferably h=1; *M′ is one or more of Ni, Al, Fe, Ti, Cr, V, Cu, Mg, Zn, Na, K, Ca, Sc; *0≤i≤1.5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.