Method for producing lithium iron phosphate precursor by using retired lithium iron phosphate battery as raw material
US12304826B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Mar 16, 2022 |
| Grant date | May 20, 2025 |
| Priority date | — |
| Expiry date | Dec 28, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/84
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for producing a lithium iron phosphate precursor by using a retired lithium iron phosphate battery as a raw material is provided, which includes steps of: soaking a battery cell in acid, performing electrolysis to reclaim copper, oxidizing ferrous iron, precipitating iron phosphate, and precipitating lithium carbonate. After precipitation is completed, performing one-step reclaim to obtain the lithium iron phosphate precursor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.