Vanadate is one of the promising cathode materials for aqueous zinc ion batteries (AZIBs) due to its abundant resources and various valence states. However, the further development is restricted by their sluggish reaction kinetics between zinc ions and the host materials. In this work, several kinds of gallium ions pre‐intercalated vanadate electrode materials through a simple hydrothermal strategy are designed. Ga‐NHVO‐0.5 sample achieves a specific capacity of 438.23 mAh g−1 at current density of 0.2 A g−1. At the same time, it delivers an energy density of 250.34 Wh kg−1 at a power density of 55 W kg−1. The assembled button cells retain 83.84% of its initial capacity after 4000 times cycling, revealing their promising applications in portable power devices. Moreover, the devices still possess a favorable stability under different bending conditions.

中文翻译：

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可逆水系锌电池(NH4)2V10O25·8H2O正极材料的镓离子预插入方案

钒酸盐因其丰富的资源和多样的价态而成为水系锌离子电池（AZIBs）有前途的正极材料之一。然而，锌离子与主体材料之间缓慢的反应动力学限制了其进一步发展。在这项工作中，通过简单的水热策略设计了几种镓离子预插钒酸盐电极材料。Ga-NHVO-0.5样品的比容量为438.23 mAh g−1电流密度为 0.2 A g−1。同时，其能量密度达到250.34 Wh kg−1功率密度为 55 W kg−1。组装好的纽扣电池在循环 4000 次后仍保留其初始容量的 83.84%，揭示了其在便携式电源设备中的广阔应用前景。此外，该器件在不同弯曲条件下仍具有良好的稳定性。