With distinct advantages like high gravimetric and volumetric capacity, low redox potential, a natural abundance of zinc, and compatibility with water, Zn-ion batteries have become a potential alternative to Li-ion batteries. However, several challenges still need to be addressed prior to the practical applications of Zn-ion batteries, such as their narrow electrochemical window, irreversibility, unstable anode, sluggish kinetics and difficulties regarding the insertion of Zn²⁺ into the host material for the cathode. Such issues can be addressed by regulating the components and structures of the electrolyte which connects the cathode and anode parts. In this mini review, we systematically describe the compositions and structures of the electrolyte and then discuss the core issues faced by the batteries, particularly their mechanism and affected factors. Furthermore, a relatively comprehensive overview is presented of the strategies being utilized to improve Zn-ion batteries via regulating liquid electrolyte, mainly including the optimization of solvents and salts, adjustment of electrolyte concentration, introduction of additives into the electrolyte, and the fabrication of a hybrid-ion battery. In the final section, we offer insights into the development of liquid electrolytes for Zn-ion batteries.

锌离子电池具有明显的优势，例如重量和体积容量高，氧化还原电势低，锌的自然丰度以及与水的相容性，已经成为锂离子电池的潜在替代品。但是，在实际应用锌离子电池之前，仍然需要解决一些挑战，例如它们的电化学窗口窄，不可逆性，阳极不稳定，动力学迟缓以及插入Zn ^2+的困难。进入阴极的主体材料。这些问题可以通过调节连接阴极和阳极部分的电解质的成分和结构来解决。在这个小型回顾中，我们系统地描述了电解质的组成和结构，然后讨论了电池所面临的核心问题，特别是其机理和影响因素。此外，对通过调整液体电解质来改善Zn离子电池的策略进行了较为全面的概述，主要包括优化溶剂和盐，调整电解质浓度，将添加剂引入电解质中以及制备电解质。混合离子电池。在最后一节中，我们提供了有关用于Zn离子电池的液体电解质的开发的见解。