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https://hdl.handle.net/2440/129997
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Type: | Journal article |
Title: | Boosting Zn electrode reversibility in aqueous electrolyte using low-cost antisolvents |
Author: | Hao, J. Yuan, L. Ye, C. Chao, D. Davey, K. Guo, Z. Qiao, S. |
Citation: | Angewandte Chemie International Edition, 2021; 60(13):7366-7375 |
Publisher: | John Wiley and Sons Inc |
Issue Date: | 2021 |
ISSN: | 1433-7851 1521-3773 |
Statement of Responsibility: | Junnan Hao, Libei Yuan, Chao Ye, Dongliang Chao, Kenneth Davey, Zaiping Guo, Shi‐Zhang Qiao |
Abstract: | Antisolvent addition has been widely studied in crystallization in the pharmaceutical industries by breaking the solvation balance of the original solution. Here we report a similar antisolvent strategy to boost Zn reversibility via regulation of the electrolyte on a molecular level. By adding for example methanol into ZnSO 4 electrolyte, the free water and coordinated water in Zn 2+ solvation sheath gradually interact with the antisolvent, which minimizes water activity and weakens Zn 2+ solvation. Concomitantly, dendrite-free Zn deposition occurs via change in the deposition orientation, as evidenced by in situ optical microscopy. Zn reversibility is significantly boosted in antisolvent electrolyte of 50% methanol by volume (Anti-M-50%) even under harsh environments of -20 °C and 60 °C. Additionally, the suppressed side reactions and dendrite-free Zn plating/stripping in Anti-M-50% electrolyte significantly enhance performance of Zn/polyaniline coin and pouch cells. We demonstrate this low-cost strategy can be readily generalized to other solvents, indicating its practical universality. Results will be of immediate interest and benefit to a range of researchers in electrochemistry and energy storage. |
Keywords: | Antisolvent Zn ion battery Zn2+ solvation dendrite-free methanol |
Description: | First published: 13 January 2021 |
Rights: | © 2021 Wiley‐VCH GmbH |
DOI: | 10.1002/anie.202016531 |
Grant ID: | http://purl.org/au-research/grants/arc/LP160101629 http://purl.org/au-research/grants/arc/DP200101862 http://purl.org/au-research/grants/arc/FL170100154 |
Published version: | http://dx.doi.org/10.1002/anie.202016531 |
Appears in Collections: | Aurora harvest 8 Chemistry and Physics publications |
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