Randomized trial evaluates electrochemical performance of synthesized vs. commercial FePO4 in LiFePO4/C materials, suggesting improved consistency from lab-designed precursors.
Key Points
This study aims to compare the effects of different FePO4 precursors on the synthesis and performance of LiFePO4/C cathodes.
Compared microstructured FePO4 synthesized by controlled precipitation with two commercial FePO4 samples and a synthesis based on FeSO4.
Characterized the materials using X-ray diffraction and measured electrochemical performance under identical conditions.
Evaluated particle size distribution and morphology of all materials.
The best electrochemical performance was achieved by the microstructured FePO4 (FP-S) with a discharge capacity of 158 mAh/g at 0.1C.
Materials from commercial sources exhibited less homogeneous particle size distribution and higher agglomeration.
Controlled precipitation of FePO4 leads to improved particle size and electrochemical response.