一种磷酸铁锂前驱体的制备方法
By using a mixed acid system of sulfuric acid and phosphoric acid and microreactor technology, the problems of low iron solubility and lengthy process in the preparation of lithium iron phosphate precursors have been solved, achieving efficient and low-cost production of lithium iron phosphate precursors and improving product purity and battery performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GUIZHOU PHOSPHATE KAIRUI TECH CO LTD
- Filing Date
- 2025-11-24
- Publication Date
- 2026-07-17
AI Technical Summary
The low solubility of iron blocks in the existing lithium iron phosphate precursor preparation process leads to low production efficiency, excessive use of phosphoric acid results in waste of phosphorus, and the process is lengthy and energy-intensive.
Iron blocks are dissolved using a mixed acid system of sulfuric acid and phosphoric acid, and the precipitation reaction is carried out in a microreactor. The pH value is controlled and nitrogen gas is introduced for protection, which simplifies the process and eliminates the need for high-temperature calcination.
It significantly improves the solubility of iron blocks, reduces phosphorus waste, lowers production costs, simplifies the process, enhances product purity and electrochemical performance, and ensures the continuity and stability of the production process.
Smart Images
Figure CN121269671B_ABST