Enhanced Electrochemical Performance of LMFP Cathodes: Insight into Manganese Precursor Selection and Phase Crystallization
Maciej Ratyński, Magdalena Winkowska‐Struzik, Dominika A. Buchberger, Bartosz Hamankiewicz, Michał Krajewski, A. Czerwiński
Abstract
High Resolution Image Download MS PowerPoint Slide The development of sustainable, high-performance lithium-ion battery cathodes is critical for next-generation energy storage. Here, we present a scalable solid-state synthesis of lithium manganese iron phosphate (LiMn x Fe 1– x PO 4 ), optimizing sintering conditions and precursor selection to enhance electrochemical performance. Through combined thermogravimetric and differential scanning calorimetry (TGA-DSC) analysis, we reveal the key high-temperature phase transformation mechanisms governing crystallization and stability. We demonstrate that Mn precursor selection plays a crucial role in mitigating capacity fade, directly influencing lattice parameter mismatches and structural degradation during the two-phase reaction. Our optimized material exhibits capacity retention exceeding 99.5% over 90 cycles, highlighting its potential for long-cycle-life, cost-effective, and environmentally friendly energy storage. These findings provide an industrial-scale pathway for next-generation phosphate-based cathodes, advancing sustainable lithium-ion battery technologies.