Facile synthesis technology of Li3V2(PO4)3/C adding H2O2 in ball mill process

Li3V2(PO4)3/C has stable structure, high theory specific capacity and good safety performance, therefore it has become the research focus of lithium-ion batteries in recent years. The facile synthesis technology of Li3V2(PO4)3/C was characterized by adding different amounts of H2O2. Structure and morphology characteristics were examined by XRD, TG, Raman Spectroscopy, XPS and SEM. Electrochemical performance was investigated by constant current charging and discharging test. The results revealed that the Li3V2(PO4)3/C electrochemical performance of adding 15 mL H2O2 was better after sintering during 6 h. At the charge cut-off voltage of 4.3 V, the first discharge capacity at 0.2 C rate reached 127 mAh g−1. Because of adding H2O2 in the ball-mill dispersant, the vanadium pentoxide formed the wet sol. The molecular-leveled mixture increased the homogeneity of raw materials. Therefore, the addition of H2O2 shortened the sintering time and significantly improved the electrochemical performance of Li3V2(PO4)3/C.