Novel Synthesis and Electrochemical Properties of Mn(VO_3)_2 as a High Capacity Electrode Material in Lithium-Ions Batteries

摘要

Mn(VO_3) powders was successfully synthesized by an effective and simple route-rheological phase reaction method and investigated as a cathode material for lithium-ion batteries. The structures, morphologies, phase purity of the prepared powder were characterized by X-ray diffraction, transmission electron microscope and X-ray photo-electron spectrometry, respectively. The results showed that the different heat temperatures could influence the particle size and crystallinity of the product. The charge-discharge experiments were performed to investigate the electrochemical properties of Mn(VO_3)_2 powder at a constant current density of 1.0 mA/cm~2 in a potential range of 0.0 and 3.5 V. The discharge capacity (441.1 mAh/g) showed only 31.7% losses of the initial discharge capacity (645.9 mAh/g) after 40 cycles.