法拉第效率
阳极
材料科学
阴极
化学工程
电化学
水溶液
原子层沉积
电极
纳米技术
人工海水
图层(电子)
化学
海水
有机化学
物理化学
工程类
海洋学
地质学
作者
Qianzhi Gou,Zhaoyu Chen,Haoran Luo,Jiangbin Deng,Ben Zhang,Nannan Xu,Junyi Cui,Yi Zheng,Meng Li,Jun Li
出处
期刊:Small
[Wiley]
日期:2023-09-29
被引量:4
标识
DOI:10.1002/smll.202305902
摘要
Rechargeable aqueous zinc-ion batteries are regarded as promising energy storage devices due to their attractive economic benefits and extraordinary electrochemical performance. However, the sluggish Zn2+ mass transfer behavior and water-induced parasitic reactions that occurred on the anode-electrode interface inevitably restrain their applications. Herein, inspired by the selective permeability and superior stability of plasma membrane, a thin UiO-66 metal-organic framework layer with smart aperture size is ex-situ decorated onto the Zn anode. Experimental characterizations in conjunction with theoretical calculations demonstrate that this bio-inspired layer promotes the de-solvation process of hydrated Zn2+ and reduces the effective contact between the anode and H2 O molecules, thereby boosting Zn2+ deposition kinetics and restraining interfacial parasitic reactions. Hence, the Zn||Zn cells could sustain a long lifespan of 1680 h and the Zn||Cu cells yielded a stable coulombic efficiency of over 99.3% throughout 600 cycles under the assistance of the bio-inspired layer. Moreover, pairing with δ-MnO2 cathode, the full cells also demonstrate prominent cycling stability and rate performance. From the bio-inspired design philosophy, this work provides a novel insight into the development of aqueous batteries.
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