The aqueous zinc-ion batteries (ZIBs) field has witnessed a tremendous advancement in the exploration of materials that can combine high energy density and short charge times. Nevertheless, these materials are primarily focused on manganese-based or vanadium-based oxides, and there are fewer reports on new materials. Herein, we proposed a new ZIBs cathode material based on polyoxovanadates (POVs) type K₄Na₂V₁₀O₂₈ (KNVO). It demonstrated the advantages of POVs, which could undergo multi-electron redox processes at each V center. The reversible capacity was maintained at 152.3 mAh g⁻¹ after 100 cycles at 0.1 A g⁻¹, and the capacity retention was close to 100% after 1000 cycles at 1 A g⁻¹. Additionally, the kinetic properties of the KNVO/Zn cell were investigated by Trasatti research, pseudocapacitance analysis and GITT test, respectively, manifesting a strong capacitive behavior as well as a high Zn²⁺ diffusion coefficient (order of 10⁻¹⁰ cm² s⁻¹). Not only that, but we also analyzed the relevant characteristic parameters of EIS in-depth, aiming to systematically probe the changes in electrochemical behavior before and after cycling. The synthesis and investigation of KNVO cathode materials may provide directions for the development of electrode materials for a rising generation of aqueous ZIBs.

水系锌离子电池 (ZIBs) 领域在探索可结合高能量密度和短充电时间的材料方面取得了巨大进步。然而，这些材料主要集中在锰基或钒基氧化物上，关于新材料的报道较少。_{在此，我们提出了一种基于聚氧钒酸盐 (POV) 型 K 4} Na ₂ V ₁₀ O ₂₈ (KNVO)的新型 ZIBs 正极材料。它展示了 POV 的优势，它可以在每个 V 中心进行多电子氧化还原过程。^{在 0.1 A g -1}下循环 100 次后，可逆容量保持在 152.3 mAh g ^{-1，并且在1 A g -1}下1000次循环后容量保持率接近100% 。此外，通过 Trasatti 研究、赝电容分析和 GITT 测试分别研究了 KNVO/Zn 电池的动力学特性，表现出强电容行为以及高 Zn ²⁺扩散系数（数量级为 10 ^-10 cm ² s ^{- 1} )。不仅如此，我们还深入分析了EIS的相关特征参数，旨在系统探究循环前后电化学行为的变化。KNVO正极材料的合成和研究可能为电极材料的发展提供方向，以用于水系ZIBs的兴起。