Precursor of a positive electrode material for a rechargeable lithium-ion battery
US11909044B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 23, 2019 |
| Grant date | Feb 20, 2024 |
| Priority date | — |
| Expiry date | Jan 8, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A precursor compound for manufacturing a lithium transition metal based oxide powder usable as an active positive electrode material in lithium-ion batteries, the precursor being either one of a metal-bearing M′-hydroxide, -oxyhydroxide or -carbonate, with M′=Ni1-x-y-zMnxCOyAz with x>0, y>0, 0.70≤1-x-y-z≤0.95 and 0≤z<0.1, the precursor comprising having a core comprising a metal-bearing compound M′c and a shell comprising a metal-bearing compound M′s, wherein M′c=Ni1-xc-yc-zcMnxcCOycAzc with 0<xc≤0.2, 0<yc≤0.2, 0≤zc<0.1 and 0.75≤1-x-y-z≤0.95, and M′s=Ni1-xs-ys-zsMnxsCOysAzs with 0<xs≤0.25, 0.75<ys≤0.95, 0≤zs<0.1 and 0≤1-xs-ys-zs≤0.10.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.