Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/137848
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Type: | Journal article |
Title: | pH-Triggered Molecular Switch Toward Texture-Regulated Zn Anode. |
Author: | Zhang, S. Hao, J. Zhu, Y. Li, H. Lin, Z. Qiao, S. |
Citation: | Angewandte Chemie International Edition, 2023; 62(17):e202301570-e202301570 |
Publisher: | Wiley |
Issue Date: | 2023 |
ISSN: | 1433-7851 1521-3773 |
Statement of Responsibility: | Shao-Jian Zhang, Junnan Hao, Yilong Zhu, Huan Li, Zhan Lin, and Shi-Zhang Qiao |
Abstract: | Zn electrodes in aqueous media exhibit an unstable Zn/electrolyte interface due to severe parasitic reactions and dendrite formation. Here, a dynamic Zn interface modulation based on the molecular switch strategy is reported by hiring γ-butyrolactone (GBL) in ZnCl2/H2O electrolyte. During Zn plating, the increased interfacial alkalinity triggers molecular switch from GBL to γ-hydroxybutyrate (GHB). GHB strongly anchors on Zn surface via triple Zn-O bonding, leading to suppressive hydrogen evolution and texture-regulated Zn morphology. Upon Zn stripping, the fluctuant pH turns the molecular switch reaction off through the cyclization of GHB to GBL. This dynamic molecular switch strategy enables high Zn reversibility with Coulombic efficiency of 99.8% and Zn||iodine batteries with high-cyclability under high Zn depth of discharge (50%). This study demonstrates the importance of dynamic modulation for Zn electrode and realizes the reversible molecular switch strategy to enhance its reversibility. |
Keywords: | dynamic interface high Zn DOD Low temperature Molecular switch Zn-ion battery |
Rights: | © 2023 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
DOI: | 10.1002/anie.202301570 |
Grant ID: | http://purl.org/au-research/grants/arc/FL170100154 http://purl.org/au-research/grants/arc/DP220102596 http://purl.org/au-research/grants/arc/LP210301397 http://purl.org/au-research/grants/arc/DE230100471 |
Published version: | https://onlinelibrary.wiley.com/ |
Appears in Collections: | Chemical Engineering publications |
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hdl_137848.pdf | Published version | 996.39 kB | Adobe PDF | View/Open |
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