With the development of stable alkali metal anodes, V₂O₅ is gaining traction as a cathode material due to its high theoretical capacity and the ability to intercalate Li, Na and K ions. Herein, we report a method for synthesizing structured orthorhombic V₂O₅ microspheres and investigate Li intercalation/de-intercalation into this material. For industry adoption, the electrochemical behavior of V₂O₅ as well as structural and phase transformation attributing to Li intercalation reaction must be further investigated. Our synthesized V₂O₅ microspheres consisted of small primary particles that were strongly joined together and exhibited good cycle stability and rate capability, triggered by reversible volume change and rapid Li ion diffusion. In addition, the reversibility of phase transformation (α, ε, δ, γ and ω-Li_xV₂O₅) and valence state evolution (5+, 4+, and 3.5+ ) during intercalation/de-intercalation were studied via in-situ X-ray powder diffraction and X-ray absorption near edge structure analyses.

随着稳定的碱金属阳极的发展，由于其高的理论容量以及嵌入Li，Na和K离子的能力，V ₂ O ₅作为阴极材料越来越受到关注。在本文中，我们报告了一种合成结构正交V ₂ O ₅微球的方法，并研究了Li嵌入/去嵌入这种材料的方法。为了工业应用，必须进一步研究V ₂ O ₅的电化学行为以及归因于Li嵌入反应的结构和相变。我们合成的V ₂ O ₅微球由牢固结合在一起的小的初级颗粒组成，并表现出良好的循环稳定性和速率能力，这是由可逆的体积变化和快速的锂离子扩散触发的。此外，还研究了通过嵌入/去嵌入过程中相变（α，ε，δ，γ和ω- _Lix V ₂ O ₅）的可逆性和价态演化（5 +，4 +和3.5+）。原位X射线粉末衍射和近边缘结构X射线吸收分析。