Recovery of FeSO4·H2O, FePO4·2 H2O and Li3PO4 products from spent LiFePO4 black power materials via acid leaching, stepwise selective crystallization and precipitation

Key Points

• The recovery process yields significant amounts of FeSO4·H2O and Li3PO4 from waste materials.
• Key evidence shows that over 85% lithium recovery is achievable through selective crystallization techniques.
• The method involves acid leaching followed by stepwise selective crystallization and precipitation for optimal product extraction.
• This approach highlights the potential for sustainable recycling of lithium-ion battery materials, reducing environmental impacts.