Sodium metal oxide material for secondary batteries and method of preparation
US12040485B2 · kind B2 · utility
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16Claims
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Key dates
| Filing date | Sep 26, 2019 |
| Grant date | Jul 16, 2024 |
| Priority date | — |
| Expiry date | May 4, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/84
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a method of preparing a sodium metal oxide material comprising NaxMyCozO2-δ, where M is one or more of the following elements: Mn, Cu, Ti, Fe, Mg, Ni, V, Zn, Al, Li, Sn, Si, Ga, Ge, Sb, W, Zr, Nb, Mo, Ta, 0.7≤x≤1.3, 0.9≤y≤1.1, 0≤z<0.15, 0≤δ≤0.2 and wherein the average length of primary particles of said sodium metal oxide material is between 2 and 10 μm, preferably between 5 and 10 μm. The invention also relates to such a material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.