Study on the preparation of Mn2V2O7 microstructure with enhanced electrochemical lithium storage performance

Abstract

In this work, Mn₂V₂O₇ microstructures were synthesized and utilized as anode materials for lithium-ion batteries. The kinetic process of Mn₂V₂O₇ electrode reactions was investigated by cyclic voltammetry at different scan rates, and the lithium-ion diffusion kinetics in the electrode materials were analyzed by electrochemical impedance spectroscopy and the galvanostatic intermittent titration technique. The formed plate-shaped Mn₂V₂O₇ microstructure offered a discharge capacity of 635.7 mA h g⁻¹ after 1000 cycles as tested at 5.0 A g⁻¹. The plate stacked porous microstructure contributes to the transport of lithium ions, the synergistic effect between Mn and V improves the electrochemical activity, and the pseudocapacitive effect enhances the lithium storage capacity. Therefore, the formed plate-shaped Mn₂V₂O₇ microstructure presents a promising application in energy storage devices.