Methods and systems for direct recycling and upcycling of phosphate-based cathode active materials
WO2026117479A1PCT designated stage Publication Date: 2026-06-04PRINCETON NUENERGY INC
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-11-21
- Publication Date
- 2026-06-04
Smart Images
Figure 00000045_0000 
Figure 00000046_0000 
Figure 00000046_0001
Abstract
Some embodiments are directed to systems and methods for direct recycling and upcycling of cathode materials. In one aspect, a method for direct recycling of cathode materials includes obtaining spent phosphate-containing cathode active materials (CAM). The method includes purifying the spent phosphate-containing CAM to obtain purified phosphate-containing CAM. The method also includes regenerating the purified phosphate-containing CAM to obtain regenerated phosphate-containing CAM. In some embodiments, the regenerating includes preserving a morphology and chemical composition of the purified phosphate-containing CAM. In some embodiments, the regenerating includes varying either one or both of the morphology and chemical composition of the purified phosphate-containing CAM.
Need to check novelty before this filing date? Find Prior Art
Citation Information
Patent Citations
Method for recovering and preparing lithium iron phosphate from waste lithium iron phosphate battery
CN102751548A
A method for preparing lithium manganese iron phosphate from lithium iron phosphate
CN109264691B
Method for repairing and regenerating lithium iron manganese phosphate by using lithium iron phosphate waste powder and lithium iron manganese phosphate waste powder
CN116621146A
Heat treatment method for recycling binder-containing lithium iron phosphate waste without oxidizing Fe (II) in lithium iron phosphate and application
CN117819511A
Method for selective oxidation-reduction regeneration from waste lithium iron phosphate, regenerated lithium iron phosphate, and lithium ion battery
EP3863106A1