The poor reversibility of the zinc (Zn) anodes and the irreversible deposition/dissolution of Mn2+/MnO2 significantly impede the commercialization of Zn-Mn aqueous batteries (ZMABs). In reducing the difference between the desired interfacial reaction environments of the cathode and anode, we found that they face the same problem of interference-the generation of irreversible corrosion products. Herein, we have introduced a novel self-regulatory mechanism. This mechanism involves the addition of sodium dihydrogen phosphate, which shifts from passive protection to active regulation. It effectively captures OH- ions, prevents corrosion product formation, and facilitates the in-situ generation of a solid electrolyte interface (SEI) film. This modification also homogenizes Zn ion flow and improves the reversibility of Zn plating and stripping. Furthermore, a stable and slightly acidic environment has been established to stabilize the pH at the cathodic interface, mitigate corrosion product formation, and enhance the reversible deposition and dissolution of Mn2+/MnO2. With the optimal electrolyte, Zn||Zn symmetric cells demonstrate stable operation for over 3000 hours at 1 mA cm-2, 1 mAh cm-2. Additionally, the Zn||Cu cells maintain high reversibility after 1000 cycles, achieving an average Coulombic Efficiency (CE) of 99.7 %. The assembled Zn||MnO2 full cells exhibit exceptional cycling stability and rate performance. This work adopts the approach of seeking common ground and emphasizing the balance of cathode and anode interfacial requirements, which represents a new and significant insight for design of ZMABs with high reversibility and high cyclability.

中文翻译：

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双功能添加剂可实现自我调节机制，以平衡 Zn||MnO2 电池中的阴极-阳极界面需求


锌（Zn）负极的可逆性差和Mn2+/MnO2的不可逆沉积/溶解严重阻碍了锌锰水系电池（ZMAB）的商业化。在缩小阴极和阳极所需的界面反应环境之间的差异时，我们发现它们面临着同样的干扰问题——不可逆腐蚀产物的产生。在此，我们引入了一种新颖的自我监管机制。这一机制涉及到磷酸二氢钠的添加，从被动保护转向主动调节。它能有效捕获OH-离子，防止腐蚀产物形成，并促进固体电解质界面（SEI）膜的原位生成。这种修改还使锌离子流均匀化并提高了镀锌和剥离的可逆性。此外，还建立了稳定的微酸性环境，以稳定阴极界面的pH值，减轻腐蚀产物的形成，并增强Mn2+/MnO2的可逆沉积和溶解。使用最佳电解质，Zn||Zn 对称电池在 1 mA cm-2、1 mAh cm-2 下可稳定运行 3000 小时以上。此外，Zn||Cu电池在1000次循环后仍保持高可逆性，平均库仑效率(CE)达到99.7%。组装的 Zn||MnO2 全电池表现出卓越的循环稳定性和倍率性能。这项工作采用寻求共同点并强调阴极和阳极界面要求平衡的方法，这为高可逆性和高循环性ZMAB的设计提供了新的、重要的见解。