Regenerating spent LiFePO 4 with tailored molecular groups: from bulk lattice repair to surface conductive coating for enhanced cycling stability

Key Points

• The research aims to improve the recycling processes of spent LiFePO4 through innovative bulk and surface modifications.
• Conducted lattice repair of spent LiFePO4 material.
• Applied surface conductive coatings to enhance performance.
• Assessed cycling stability at different charge rates (1.0C and 5.0C).
• Achieved 95.7% capacity retention after 500 cycles at 1.0C.
• Achieved 92.2% capacity retention after 1000 cycles at 5.0C.

Abstract