Synthesis and Characterization of Lithium Trivanadates as Cathode Materials for Rechargeable Lithium Battery via a New Wet Chemical Synthesis Method

摘要

LiV3O8 powders were prepared via a facile wet chemical synthesis method starting from thestoichiometric LiNO3 and LiCl as binary Li-source, and NH4VO3 as V-source. The as-preparedbrownish red products were characterized by X-ray diffraction (XRD), scanning electron microscope(SEM), galvanostatic discharge/charge test, cycle voltammetry (CV) and electrochemical impedancespectroscopy (EIS). The results indicate that heating temperature has great influences on thecrystallinity, morphology, particle size, and electrochemical performance of the thus-synthesizedsamples. As a result, the LiV3O8 obtained at 350 for 10 h displays excellent electrochemicalo properties because of its desirable crystallinity and preferred particle size. It is found that 350 C.