Organic-inorganic hybrid material of vanadyl ethylene glycolate (VEG) with formula VO(CH₂O)₂ has been studied as cathode material of zinc-ion aqueous batteries, and its structural information during the electrochemical process was evaluated for the first time using in-situ x-ray diffraction(XRD) technique. The VEG electrode exhibits good electrochemical performance. A high specific capacity of 364 mA h g⁻¹ (at 100 mA g⁻¹) is obtained, and the capacity can still remain 80% of the total capacity even after 100 cycles. The VEG electrode also exhibits good stability in large current density (74% and 65% specific capacity can be remained after 1000 cycles at current density of 2000 mA g⁻¹ and after 2000 cycles at current density of 5000 mA g⁻¹ respectively), and good rate capacity (157 mA h g⁻¹ specific capacity at current density of 4000 mA g⁻¹), which is much higher than the previous reported result. 96% of initial specific capacity can be retrieved with recuperating the current density to 100 mA g⁻¹ after experienced various current density (including 4000 mA g⁻¹) in 60 cycles. It is believed that the amorphous carbon layer formed during the PEG pyrolytic process is crucial to achieving high electronic conductivity of the VEG effectively and improving the electrochemical performance. In situ XRD pattern, the completely reversible appearance and disappearance of new phase even in the second cycle indicate that the electrode material possess an excellent reversibility of the Zn insertion/extraction.

研究了通式为VO（CH ₂ O）_2的乙醇酸钒氧乙烯酯（VEG）的有机-无机杂化材料，作为锌离子水电池的正极材料，并首次在电化学过程中评估了其在电化学过程中的结构信息。原位X射线衍射（XRD）技术。VEG电极具有良好的电化学性能。获得了364 mA h g ^-1的高比容量（在100 mA g ^-1时），即使经过100次循环，该容量仍可保持总容量的80％。VEG电极在大电流密度下也表现出良好的稳定性（在1000 mA循环后，在2000 mA g ^-1的电流密度下可以保持74％和65％的比容量）并且在5000毫安克电流密度2000个循环之后^-1分别地），以及良好的速率容量（157毫安ħ克^-1处的4000毫安克电流密度比容量^-1），这比以前的报告的结果要高得多。在经历了各种电流密度（包括4000 mA g ^-1）后，将电流密度恢复至100 mA g ^-1可恢复到96％的初始比容量）在60个周期中。据信在PEG热解过程中形成的无定形碳层对于有效地获得VEG的高电子电导率和改善电化学性能是至关重要的。原位XRD图谱，甚至在第二个循环中新相的完全可逆出现和消失表明电极材料具有极好的Zn插入/萃取可逆性。