Shen Lvgen, Wang Cheng, Du Xinyi, Lin Xiujing, Liu Ruiqing, Feng Xiaomiao
State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing University of Posts & Telecommunications, Nanjing 210023, China.
ACS Appl Mater Interfaces. 2025 Jun 18;17(24):35477-35488. doi: 10.1021/acsami.5c05136. Epub 2025 Jun 4.
Aqueous zinc-ion batteries (AZIBs) have attracted considerable attention due to their low cost and high safety. However, their development is hindered by dendrite formation and complex anodic side reactions. In this study, a binder-free zirconium-based metal-organic framework (MOF) membrane, NUS-8, is proposed as an artificial solid electrolyte interphase (ASEI) for the Zn anode, with the aim to regulate Zn desolvation and deposition processes, inhibit dendrite growth, and mitigate anodic side reactions. The microporous structure and abundant functional groups (-COOH, -OH) in the NUS-8 membrane enable ion flux control through an ion-confinement effect, reducing ion transfer resistance and providing stable pathways for Zn migration. These characteristics enhance the hydrophilicity of the Zn anode surface, accelerate the desolvation process, and lower the activation energy barrier for Zn migration from 28.73 to 26.10 kJ mol. As a result, symmetric cells with NUS-8@Zn anodes exhibited a prolonged lifespan exceeding 1180 h at 1 mA cm and 1 mAh cm, significantly outperforming bare Zn anodes (90 h). Additionally, the NUS-8@Zn||MnO full cell demonstrated excellent cycling stability, with a capacity retention of 72.3% over 3000 cycles at 5 A g. This work presents a promising strategy to enhance Zn anode performance and introduces a design approach for advancing AZIBs.
水系锌离子电池（AZIBs）因其低成本和高安全性而备受关注。然而，枝晶形成和复杂的阳极副反应阻碍了它们的发展。在本研究中，一种无粘结剂的锆基金属有机框架（MOF）膜NUS-8被提议作为锌阳极的人工固体电解质界面（ASEI），旨在调节锌的去溶剂化和沉积过程，抑制枝晶生长，并减轻阳极副反应。NUS-8膜中的微孔结构和丰富的官能团（-COOH、-OH）通过离子限制效应实现离子通量控制，降低离子转移电阻，并为锌迁移提供稳定路径。这些特性增强了锌阳极表面的亲水性，加速了去溶剂化过程，并将锌迁移的活化能垒从28.73 kJ mol降低到26.10 kJ mol。结果，具有NUS-8@Zn阳极的对称电池在1 mA cm和1 mAh cm下表现出超过1180 h的延长寿命，明显优于裸锌阳极（90 h）。此外，NUS-8@Zn||MnO全电池表现出优异的循环稳定性，在5 A g下3000次循环后的容量保持率为72.3%。这项工作提出了一种提高锌阳极性能的有前景的策略，并介绍了一种推进水系锌离子电池发展的设计方法。
