Zn-ion batteries (ZIBs) are considered promising alternatives to conventional Li-ion secondary batteries due to their high safety, environmental friendliness, and cost-effectiveness. Despite these advantages, uneven metal plating and stripping, dendrite formation, and passivation and corrosion owing to the hydrogen evolution reaction (HER) have hindered the practical implementation of ZIBs. A promising route for overcoming these problems involves coating the Zn anode with eutectic gallium indium (EGaIn)-based liquid metal (LM) with a strong Zn affinity and growth direction tenability. Despite considerable research on EGaIn-coated Zn anodes for ZIBs, this topic has not been comprehensively reviewed. Hence, this Review introduces the application of LMs to ZIBs and particularly discusses the mitigation of stability issues using LM and the fundamental processes related to Zn anodes. We summarize the progress in this field and suggest promising future research directions to advance ZIBs.

中文翻译：

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在 Zn 负极上使用 Ga 基液态金属涂层的 Zn 离子电池的研究趋势和未来展望


锌离子电池 （ZIB） 因其高安全性、环境友好性和成本效益而被认为是传统锂离子二次电池的有前途的替代品。尽管具有这些优点，但不均匀的金属电镀和剥离、枝晶的形成以及析氢反应 （HER） 引起的钝化和腐蚀阻碍了 ZIB 的实际应用。克服这些问题的一个有前途的途径是在 Zn 阳极涂覆基于共晶镓铟 （EGaIn） 的液态金属 （LM），该金属具有很强的 Zn 亲和力和生长方向的韧性。尽管对用于 ZIB 的 EGaIn 涂层 Zn 负极进行了大量研究，但该主题尚未得到全面综述。因此，本文介绍了 LMs 在 ZIBs 中的应用，并特别讨论了使用 LM 缓解稳定性问题以及与 Zn 负极相关的基本过程。我们总结了该领域的进展，并提出了有希望的未来研究方向，以推进 ZIBs。