MgMoV₂O₆/TiO₂ nanocomposite: Synthesis, structure, morphology and electrochemical performance

The development of efficient cathode materials is critical for advancing magnesium-ion batteries, which are promising alternatives to lithium-ion batteries, due to their comparable high energy density and safety. In this study, TiO₂ supported MgMoV₂O₆ was synthesized and characterized as a potential cathode material for magnesium-ion batteries. The morphology and elemental composition of the materials were examined using Scanning Electron Microscopy (SEM) coupled with Energy Dispersive X-ray Analysis (EDAX). SEM revealed uniform, plate-like particles with well-defined grain boundaries, indicative of high crystallinity and favorable ionic transport properties. EDAX confirms the stoichiometric incorporation of Mg, Mo, V, and Ti with homogeneously distributed elements, suggesting successful synthesis of the product. UV–Vis spectroscopy shows charge transfer transitions and suitable optical bandgap, which further makes the material itself viable for electrochemical applications. FTIR analysis confirms that the functional groups of metal-oxygen bonds are present in the MgMoV₂O₆ structure. Electrochemical studies via cyclic voltammetry (CV) showed significantly enhanced specific capacitance for MMTV sample compared to MMV at all scan rates. The sample MMTV shows highest specific capacitance at 25 mV/s with 33.19 F/g for MMTV than MMV (17.1 F/g). Also, suggesting that TiO₂-supported MgMoV₂O₆ nanocomposites are well cathode material for Mg-ion batteries.