Aqueous zinc-ion batteries (AZIBs) show great potential in the field of electrochemical energy storage with the advantages of high safety, low cost and environmental friendliness. Prussian blue analogues (PBAs) are considered as the highly promising cathode materials for AZIBs because of their low cost and high voltage potential. Its excellent electrochemical performance and sustainable energy storage capability provide a new direction and opportunity for the development of AZIBs technology. The practical application of PBAs in AZIBs, however, is restrained by its unstable cycle life deriving from PBAs’ inherent structure deficiencies and its dissolution in aqueous electrolyte. Based on the summary of series of literature, we will comprehensively introduce the PBAs as cathodes for AZIBs in this review. Firstly, some basic knowledge of PBAs is introduced, including structural characteristics, advantages and issues. Secondly, several commonly used modification methods to improve the properties of PBAs, as well as electrolytes to stabilize PBAs, are presented. Finally, the future research directions and commercial prospects of PBAs in AZIBs are proposed to encourage further exploration and promote technological innovation.

中文翻译：

---

用于水性锌离子电池的普鲁士蓝类似物：最近的工艺和前景


水系锌离子电池 （AZIBs） 具有安全性高、成本低、环境友好等优点，在电化学储能领域显示出巨大的潜力。普鲁士蓝类似物 （PBA） 因其低成本和高电压电位而被认为是 AZIB 非常有前途的正极材料。其优异的电化学性能和可持续储能能力为 AZIBs 技术的发展提供了新的方向和机遇。然而，PBA 在 AZIB 中的实际应用受到 PBA 固有结构缺陷及其在水性电解质中的溶解导致其不稳定循环寿命的限制。在总结系列文献的基础上，本文将全面介绍 PBAs 作为 AZIBs 的阴极。首先，介绍了 PBA 的一些基本知识，包括结构特点、优势和问题;其次，提出了几种常用的改善 PBA 性能的改性方法，以及用于稳定 PBA 的电解质。最后，提出了 PBAs 在 AZIBs 中的未来研究方向和商业前景，以鼓励进一步探索并促进技术创新。