Based on the existence of multiple valence states of Ni and V, the single-phase nickel vanadium bimetal oxide NiV₂O₆ is successfully synthesized by asimple sol-gel method. Benefiting from the multielectron reaction of nickel (Ni) and vanadium (V), as novel anode materials of lithium-ion batteries (LIBs), the NiV₂O₆ electrode exhibits excellent electrochemical performance. After activation, attributed to the decrease in the particle size and an increased pseudocapacitance contribution, the electrode material exhibits a highly stable reversible capacity. At a small current density of 0.1 A g⁻¹, a stable discharge specific capacity of around 1200 mA h g⁻¹ can be observed, which is more than three times the capacity of the commercial graphite anode. Using electrochemical impedance spectroscopy (EIS) and scanning electron microscopy (SEM) measurement methods, we discuss the function of the activation process. To explore the discharge/charge process, based on in situ X-ray diffraction (XRD) measurements, combined with the X-ray photoelectron spectroscopy (XPS) and SEM results, we analyze the charge/discharge reaction mechanism of the NiV₂O₆ electrode in detail for the first time. In addition, a full cell is employed to confirm the practicality of the NiV₂O₆ anode material.

基于Ni和V的多个价态的存在，通过简单的溶胶-凝胶法成功合成了单相镍钒双金属氧化物NiV ₂ O ₆。NiV ₂ O ₆电极得益于镍（Ni）和钒（V）的多电子反应，作为锂离子电池（LIBs）的新型负极材料，具有出色的电化学性能。活化后，归因于颗粒尺寸的减小和假电容的增加，电极材料表现出高度稳定的可逆容量。在0.1 A g ^-1的小电流密度下，稳定的放电比容量约为1200 mA hg ^-1可以观察到，这是市售石墨阳极容量的三倍以上。使用电化学阻抗谱（EIS）和扫描电子显微镜（SEM）测量方法，我们讨论了激活过程的功能。为了探索放电/充电过程，基于原位X射线衍射（XRD）测量，结合X射线光电子能谱（XPS）和SEM结果，我们分析了NiV ₂ O ₆的充电/放电反应机理。电极的详细信息。另外，采用全电池来证实NiV ₂ O ₆阳极材料的实用性。