Particle morphology and electrochemical performance of LiFePO ₄ synthesized via hydrothermal process at 200°C

LiFePO ₄ powders were synthesized from LiOH·H ₂O, FeSO ₄·7H ₂O, and H ₃PO ₄ via the hydrothermal process at 200°C. The particle sizes, morphology and electrochemical performance of the as-synthesized LiFePO ₄ particles varied from the pH value, reaction time and solution concentration of the precursor. The as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and galvaostdtic charge-discharge tests. The results indicated that the samples with carbon coating after reacting at pH value of 9 for 4h exhibited good rate capability, which had small particle size and plate-like morphology.