TY - JOUR
T1 - Regulating Water Molecules via Bioinspired Covalent Organic Framework Membranes for Zn Metal Anodes
AU - Zhang, Sida
AU - Chen, Jiashu
AU - Chen, Weigen
AU - Su, Yiwen
AU - Gou, Qianzhi
AU - Yuan, Ruduan
AU - Wang, Ziyi
AU - Wang, Kaixin
AU - Zhang, Wentao
AU - Hu, Xiqian
AU - Zhang, Zhixian
AU - Wang, Pinyi
AU - Wan, Fu
AU - Liu, Jie
AU - Li, Beibei
AU - Wang, Yifei
AU - Zheng, Guangping
AU - Li, Meng
AU - Sun, Jingyu
N1 - Publisher Copyright:
© 2025 Wiley-VCH GmbH.
PY - 2025/4/1
Y1 - 2025/4/1
N2 - The Zn metal anode in aqueous zinc-ion batteries (AZIBs) faces daunting challenges including undesired water-induced parasitic reactions and sluggish ion migration kinetics. Herein, we develop three-dimensional covalent organic framework (COF) membranes with bioinspired ion channels toward stabilized Zn anodes. These COFs, featured by zincophilic pyridine-N sites, enable effective regulation of water molecules at the anode-electrolyte interphase. Systematic experimental analysis and theoretical simulations reveal the optimized COF-320N membrane functions as ion pumps, accordingly facilitating Zn2+ transport and inhibiting direct contact between Zn anode and free water molecules. Consequently, the bio-inspired strategy achieves improved Zn2+ transference number (0.61), rapid de-solvation kinetics, and suppressed hydrogen evolution. The assembled Zn||MnO2 pouch cell integrated with COF-320N membrane exhibits favorable electrochemical performances. Such a bioinspired concept for optimizing Zn anodes opens new pathways in developing advanced energy storage devices.
AB - The Zn metal anode in aqueous zinc-ion batteries (AZIBs) faces daunting challenges including undesired water-induced parasitic reactions and sluggish ion migration kinetics. Herein, we develop three-dimensional covalent organic framework (COF) membranes with bioinspired ion channels toward stabilized Zn anodes. These COFs, featured by zincophilic pyridine-N sites, enable effective regulation of water molecules at the anode-electrolyte interphase. Systematic experimental analysis and theoretical simulations reveal the optimized COF-320N membrane functions as ion pumps, accordingly facilitating Zn2+ transport and inhibiting direct contact between Zn anode and free water molecules. Consequently, the bio-inspired strategy achieves improved Zn2+ transference number (0.61), rapid de-solvation kinetics, and suppressed hydrogen evolution. The assembled Zn||MnO2 pouch cell integrated with COF-320N membrane exhibits favorable electrochemical performances. Such a bioinspired concept for optimizing Zn anodes opens new pathways in developing advanced energy storage devices.
KW - Aqueous zinc-ion batteries
KW - Bioinspired
KW - Covalent organic framework
KW - Ion channel
KW - Water molecule regulation
UR - http://www.scopus.com/inward/record.url?scp=85216217231&partnerID=8YFLogxK
U2 - 10.1002/anie.202424184
DO - 10.1002/anie.202424184
M3 - Journal article
AN - SCOPUS:105001677017
SN - 1433-7851
VL - 64
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
IS - 14
M1 - e202424184
ER -