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Achieving ultra‐high rate planar and dendrite‐free zinc electroplating for aqueous zinc battery anodes
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(2022) Achieving ultra‐high rate planar and dendrite‐free zinc electroplating for aqueous zinc battery anodes. Advanced Materials, 34 (28). 2202552. doi:10.1002/adma.202202552 ISSN 0935-9648.
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WRAP-achieving-ultra‐high-rate-planar-dendrite‐free-zinc-electroplating-aqueous-zinc-battery-anodes-2022.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (2194Kb) | Preview |
Official URL: https://doi.org/10.1002/adma.202202552
Abstract
Despite being one of the most promising candidates for grid-level energy storage, practical aqueous zinc batteries are limited by dendrite formation, which leads to significantly compromised safety and cycling performance. In this study, by using single-crystal Zn-metal anodes, reversible electrodeposition of planar Zn with a high capacity of 8 mAh cm−2 can be achieved at an unprecedentedly high current density of 200 mA cm−2. This dendrite-free electrode is well maintained even after prolonged cycling (>1200 cycles at 50 mA cm−2). Such excellent electrochemical performance is due to single-crystal Zn suppressing the major sources of defect generation during electroplating and heavily favoring planar deposition morphologies. As so few defect sites form, including those that would normally be found along grain boundaries or to accommodate lattice mismatch, there is little opportunity for dendritic structures to nucleate, even under extreme plating rates. This scarcity of defects is in part due to perfect atomic-stitching between merging Zn islands, ensuring no defective shallow-angle grain boundaries are formed and thus removing a significant source of non-planar Zn nucleation. It is demonstrated that an ideal high-rate Zn anode should offer perfect lattice matching as this facilitates planar epitaxial Zn growth and minimizes the formation of any defective regions.
Item Type: | Journal Article | ||||||||||||||||||
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Subjects: | Q Science > QD Chemistry T Technology > TK Electrical engineering. Electronics Nuclear engineering T Technology > TS Manufactures |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||||||||||||
SWORD Depositor: | Library Publications Router | ||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Zinc ion batteries, Anodes, Dendritic crystals, Electroplating | ||||||||||||||||||
Journal or Publication Title: | Advanced Materials | ||||||||||||||||||
Publisher: | Wiley - V C H Verlag GmbH & Co. KGaA | ||||||||||||||||||
ISSN: | 0935-9648 | ||||||||||||||||||
Official Date: | 14 July 2022 | ||||||||||||||||||
Dates: |
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Volume: | 34 | ||||||||||||||||||
Number: | 28 | ||||||||||||||||||
Article Number: | 2202552 | ||||||||||||||||||
DOI: | 10.1002/adma.202202552 | ||||||||||||||||||
Status: | Peer Reviewed | ||||||||||||||||||
Publication Status: | Published | ||||||||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||||||||
Date of first compliant deposit: | 8 June 2022 | ||||||||||||||||||
Date of first compliant Open Access: | 9 June 2022 | ||||||||||||||||||
RIOXX Funder/Project Grant: |
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