High capacity and good stability of sodium vanadate for aqueous zinc ion batteries are urgently desired. The alkaline stripped pentavalent vanadium solution was used to prepare Na_0.58V₂O₅·0.11H₂O with high interlayer spacing. As cathode for aqueous zinc ion battery, the Na_0.58V₂O₅·0.11H₂O delivers a high initial discharge capacity of 542 mAh g⁻¹ at 0.2 A g⁻¹ and a high capacity of 437 mAh g⁻¹ at 1 A g⁻¹ after 100 cycles corresponding to high retention of 91.2%. The ex-situ X-ray diffraction result shows the generation of an open-structured zinc pervanadate (Zn₃(VO₄)₂·2.93H₂O) during the discharge/charge process, which promotes the excellent cyclic performance of the Na_0.58V₂O₅·0.11H₂O. The low-cost material with high performance is a promising candidate for cathode in aqueous zinc ion batteries.

迫切需要高容量和良好稳定性的钒酸钠水溶液锌离子电池。用碱性汽提五价钒溶液制备高层间距Na _0.58 V ₂ O ₅ ·0.11H ₂ O。作为水性锌离子电池的正极，Na _0.58 V ₂ O ₅ ·0.11H ₂ O在 0.2 A g ^-1时提供了 542 mAh g ^-1的高初始放电容量，在 1时提供了 437 mAh g ^-1的高容量克^-1100 个循环后对应的高保留率为 91.2%。异位X 射线衍射结果表明，在放电/充电过程中生成了开放结构的过钒酸锌 (Zn ₃ (VO ₄ ) ₂ ·2.93H ₂ O)，促进了 Na _0.58优异的循环性能V ₂ O ₅ ·0.11H ₂ O。这种低成本、高性能的材料是水性锌离子电池正极的一种很有前景的候选材料。