Synthesis of LiFePO 4/C by solid–liquid reaction milling method

Abstract

LiFePO 4/C was synthesized by the method of solid–liquid reaction milling, using FeCl 3·6H 2O, Li 2CO 3 and (NH 4) 2HPO 4 and glucose, which was used as reductant (carbon source). The samples were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), TG-DTA analysis, infrared absorption carbon–sulfur analysis and electrochemical performance test. The sample synthesized at 680 °C for 8 h showed, at initial discharge, a capacity of 155.8, 153.2, 148.5, 132.7 mAh g − 1 at 0.2 °C, 0.5 °C, 1 °C and 3 °C rate respectively. The sample also showed an excellent capacity retention as there was no significant capacity fade after 10 cycles.