Method to synthesize Na-based electroactive materials
US10998549B2 · kind B2 · utility
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Key dates
| Filing date | Jun 15, 2016 |
| Grant date | May 4, 2021 |
| Priority date | — |
| Expiry date | Sep 7, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F2998/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention relates to a process for the preparation of sodium-based solid compounds, such as sodium-based solid alloys and sodium-based crystalline phases by ball-milling using metallic sodium as starting material.The invention also relates to some sodium-based crystalline P′2-phases and to Na-based vanadium phosphates phases (Na(3+y)V2(PO4)3) with 0<y≤3 and Na-based vanadium fluorophosphates phases (Na(3+z)V2(PO4)2F3) with 0<z≤3, in particular Na4V2(PO4)2F3, obtained by such a process and to their use, as active material for positive electrode, in a Na-ion battery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.