Preparation method for ultra-high compacted lithium iron phosphate cathode material and lithium battery
US12252413B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2024 |
| Grant date | Mar 18, 2025 |
| Priority date | — |
| Expiry date | Dec 3, 2044 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present application belongs to the field of lithium battery technology, particularly relating to a preparation method for ultra-high compacted lithium iron phosphate cathode material and lithium battery. The method comprises: obtaining an iron-containing precursor based on iron phosphate and dispersant; Mixing the iron-containing precursor, lithium source, phosphorus source, and first carbon source for first sintering to obtain the first precursor mixture and grinding to the first preset particle size to obtain the first precursor; Mixing the iron-containing precursor, lithium source, phosphorus source, and second carbon source for second sintering to obtain the second precursor mixture and grinding to the second preset particle size to obtain the second precursor; Mixing the first precursor, second precursor, and third carbon source and performing a third sintering to obtain the lithium iron phosphate cathode material, improving the coating integrity of the first carbon coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.