@article{Lu2026, 
author = {Baoliang Lu and Guixin Zhang and Yaxin Lu and Ling Wang and Yuxiang Zhou and Hongqiang Wang and Qingyu Li and Zhaoling Ma},
title = {A three-dimensional tunnel ion sieve interface for ultra-long life Zn metal anodes},
year = {2026},
journal = {Nano Research},
volume = {19},
number = {7},
pages = {94908542},
keywords = {Zn-ion battery, Zn anode, ZnV2O4, three-dimensional tunnel, ion sieve},
url = {https://www.sciopen.com/article/10.26599/NR.2026.94908542},
doi = {10.26599/NR.2026.94908542},
abstract = {The stable Zn metal anode is pivotal for advancing aqueous Zn-ion batteries, yet it remains challenged by rampant dendrite growth and parasitic side reactions. Herein, the spinel structured ZnV2O4 with moderate oxygen vacancies serves as an ion-sieve interphase on the Zn anode, whose superior selectivity of tunnel size enables a high ionic conductivity up to 10.56 mS·cm−1. The surface oxygen vacancies can promote the strong adsorption towards Zn ions and subsequent desolvation. The moderate oxygen vacancy content preserves the inner integrality of connectivity tunnels for ZnV2O4 interphase facilitating the rapid ion transport kinetics. COMSOL simulation and density functional theory (DFT) calculation conjointly confirm the higher Zn2+ flux and the accelerated desolvation kinetics. Consequently, equipped with ZnV2O4@Zn anode, the symmetric cell delivers an ultra-stable cycling lifespan exceeding 3700 h at 4 mA·cm−2/1 mAh·cm−2. Even at the condition of 8 mA·cm−2/1 mAh·cm−2, the symmetric cell maintains a stable cycling for over 900 h. This work underscores the critical factor of the compatibility of oxygen vacancy and ion sieve tunnel geometry, thereby paving a promising avenue for constructing durable aqueous Zn-ion batteries.}
}