Aqueous zinc-ion batteries (AZIBs) have emerged as one of the most promising energy storage technologies due to their high safety and cost-effectiveness. However, several challenges associated with the Zn metal anode, such as dendrite growth, corrosion, and hydrogen evolution reaction (HER), have hindered further applications of AZIBs. Herein, maltose (MT) is used as a functional electrolyte additive to protect the Zn metal electrode during the interface deposition process. The additive can effectively affect the interface of Zn metal, suppressing HER and corrosion reactions. Moreover, it facilitates the uniform deposition of Zn by inducing Zn²⁺ to form a stable (100) crystal plane. As a result, the symmetric cell exhibited stable cycling performance for 2000 h at a current density of 2 mA cm^–2, and the Zn||NH₄V₄O₁₀ full cell maintained steady cycling for 1000 cycles at 2 A g^–1. This study provides an approach to achieve uniform Zn deposition through additives.

中文翻译：

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麦芽糖添加剂能够实现锌离子的致密沉积，从而稳定锌阳极


水系锌离子电池（AZIB）由于其高安全性和成本效益而成为最有前途的储能技术之一。然而，与锌金属阳极相关的一些挑战，例如枝晶生长、腐蚀和析氢反应（HER），阻碍了AZIB的进一步应用。这里，麦芽糖（MT）被用作功能性电解质添加剂，以在界面沉积过程中保护锌金属电极。该添加剂能有效影响Zn金属界面，抑制HER和腐蚀反应。此外，它通过诱导Zn ²⁺ 形成稳定的（100）晶面，有利于Zn的均匀沉积。结果，对称电池在2 mA cm ^–2 电流密度下表现出稳定的循环性能2000 h，Zn||NH ₄ V ₄ O ₁₀ 全电池在 2 A g ^–1 下保持稳定循环 1000 个循环。这项研究提供了一种通过添加剂实现均匀锌沉积的方法。