Rechargeable aqueous zinc–ion batteries have offered an alternative for large‐scale energy storage owing to their low cost and material abundance. However, developing suitable cathode materials with excellent performance remains great challenges, resulting from the high polarization of zinc ion. In this work, an aqueous zinc–ion battery is designed and constructed based on H₂V₃O₈ nanowire cathode, Zn(CF₃SO₃)₂ aqueous electrolyte, and zinc anode, which exhibits the capacity of 423.8 mA h g⁻¹ at 0.1 A g⁻¹, and excellent cycling stability with a capacity retention of 94.3% over 1000 cycles. The remarkable electrochemical performance is attributed to the layered structure of H₂V₃O₈ with large interlayer spacing, which enables the intercalation/de‐intercalation of zinc ions with a slight change of the structure. The results demonstrate that exploration of the materials with large interlayer spacing is an effective strategy for improving electrochemical stability of electrodes for aqueous Zn ion batteries.

中文翻译：

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基于分层H2V3O8纳米线阴极的高性能水性锌离子电池

可充电的锌离子水基电池由于其成本低廉和材料丰富而成为大规模储能的替代方法。然而，由于锌离子的高极化，开发具有优异性能的合适的阴极材料仍然是巨大的挑战。在这项工作中，以H ₂ V ₃ O ₈纳米线阴极，Zn（CF ₃ SO ₃）₂水性电解质和锌阳极为基础，设计和构造了水性锌离子电池，其容量为423.8 mA hg ^-1在0.1 A g ^-1时，以及出色的循环稳定性，在1000次循环中的容量保持率为94.3％。出色的电化学性能归因于H ₂ V ₃ O ₈的层状结构，其层间间距大，从而使得锌离子的嵌入/脱嵌结构略有变化。结果表明，探索具有大的层间间隔的材料是改善水性Zn离子电池电极的电化学稳定性的有效策略。