Aqueous zinc‐ion batteries (AZIBs) have gained significant attention as a promising technology for grid scale energy storage due to their high safety and low cost. Nevertheless, side reactions on the zinc anodes result in a decrease in efficiency decay and capacity loss, hindering the wide‐spread application of AZIBs. Recently, great efforts have been conducted to tackle these challenges, such as modifying the internal structure of zinc anodes, coating protection on the surface of zinc anodes, and optimizing the electrolytes. However, there is a lack of systematic summary on the design of side reactions‐suppressed zinc anodes, especially through the optimization strategies of aqueous electrolytes. Herein, this review systematically summarizes the main mechanisms and influence factors of side reactions. Subsequently, we present the main modification strategies based on electrolyte engineering for alleviating side reactions, with a particular emphasis on polymer electrolytes. Lastly, we shed light on the potential research directions and perspectives of aqueous electrolytes, which may promote the development of AZIBs.

中文翻译：

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深入研究抑制水性锌离子电池副反应的电解质策略

水性锌离子电池（AZIB）由于其高安全性和低成本，作为一种有前途的电网规模储能技术而受到广泛关注。然而，锌阳极上的副反应会导致效率衰减和容量损失减少，阻碍了AZIBs的广泛应用。近年来，人们为应对这些挑战做出了巨大的努力，例如修改锌阳极的内部结构、锌阳极表面的涂层保护以及优化电解质。然而，对于抑制副反应的锌阳极的设计，特别是通过水电解质的优化策略，缺乏系统的总结。本文系统总结了副反应的主要机制和影响因素。随后，我们提出了基于电解质工程的用于减轻副反应的主要改性策略，特别是聚合物电解质。最后，我们阐述了水系电解质的潜在研究方向和前景，这可能会促进AZIBs的发展。