Magnesium-ion batteries have become important candidates for secondary batteries due to their low cost, dendrite-free and multivalent nature. However, the lack of structural stability of most electrode materials and the slow diffusion kinetics of Mg²⁺ have hindered the development of magnesium-ion batteries. In this work, V₃O₇/VO₂ film electrodes were grown in situ on indium tin oxide conductive glass using a low-temperature liquid-phase deposition method. After calcination at different temperatures in a nitrogen atmosphere, it was concluded that the films calcined at 400 °C had an appropriate crystallinity and biphasic structure. With 0.5 M Mg(ClO₄)₂/PC as the electrolyte, the initial discharge capacity was 111.5 mA h m⁻² at 100 mA m⁻² and the stabilized capacity was 156.7 mA h m⁻² after 100 cycles. According to high-resolution transmission electron microscopy, ex-situ X-ray diffraction, and X-ray photoelectron spectroscopy, V₃O₇, formed by the partial phase transformation of VO₂, has an extraordinarily large interlayer space as the calcination temperature increases. It assisted VO₂ to increase the Mg²⁺ transport channels and provided more active sites to promote diffusion kinetics (the average D_Mg²⁺ was 2.83 × 10⁻¹² cm² s⁻¹). These results may provide a new idea for the use of V₃O₇/VO₂ films as electrode materials for magnesium-ion batteries.

镁离子电池由于其低成本、无枝晶和多价性质而成为二次电池的重要候选者。然而，大多数电极材料缺乏结构稳定性以及Mg ²⁺缓慢的扩散动力学阻碍了镁离子电池的发展。在这项工作中，采用低温液相沉积方法在氧化铟锡导电玻璃上原位生长V ₃ O ₇ /VO _{2薄膜电极。}在氮气气氛中不同温度下煅烧后，得出结论，在400℃下煅烧的薄膜具有适当的结晶度和双相结构。以0.5 M Mg(ClO ₄ ) ₂ /PC为电解液，100 mA m ^-2下首次放电容量为111.5 mAh m ^-2，循环100次后稳定容量为156.7 mAh m ^-2。高分辨透射电子显微镜、异位X射线衍射和X射线光电子能谱表明，随着煅烧温度的升高， VO ₂部分相变形成的V ₃ O ₇具有非常大的层间空间。 。它有助于VO ₂增加Mg ²⁺传输通道，并提供更多的活性位点以促进扩散动力学（平均D _Mg ²⁺为2.83 × 10 ^-12  cm ²  s ^-1）。_{这些结果可能为V 3} O ₇ /VO ₂薄膜作为镁离子电池电极材料的应用提供新的思路。