Olivine-type compounds: method for their preparation and use in cathode materials for sodium-ion batteries
US12322801B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2022 |
| Grant date | Jun 3, 2025 |
| Priority date | — |
| Expiry date | Dec 22, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Olivine-type compounds, their preparation and use in cathode materials for sodium-ion batteries. The olivine-type compounds may be obtained by a direct synthesis embodying a hydrothermal method. The method may include preparing an aqueous mixture including a M-containing compound, a M′-containing compound and a M″-containing compound to obtain a M-M′-M″ mixture; adding a P-containing compound to the mixture M-M′-M″ mixture to obtain a M-M′-M″-P mixture; adding a Na-containing compound to the M-M′-M″-P mixture to obtain a Na-M-M′-M″-P mixture; and introducing the Na-M-M′-M″-P mixture into an autoclave to perform crystal growth and obtain the compound of general formula NahMiM′jM″kPO4.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.