In Situ Formed Magnesiophilic Sites Guiding Uniform Deposition for Stable Magnesium Metal Anodes

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In Situ Formed Magnesiophilic Sites Guiding Uniform Deposition for Stable Magnesium Metal Anodes
Title:
In Situ Formed Magnesiophilic Sites Guiding Uniform Deposition for Stable Magnesium Metal Anodes
Journal Title:
Nano Letters
Publication Date:
10 November 2022
Citation:
Yang, G., Li, Y., Zhang, C., Wang, J., Bai, Y., Lim, C. Y. J., Ng, M.-F., Chang, Z., Kumar, S., Sofer, Z., Liu, W., & Seh, Z. W. (2022). In Situ Formed Magnesiophilic Sites Guiding Uniform Deposition for Stable Magnesium Metal Anodes. Nano Letters, 22(22), 9138–9146. https://doi.org/10.1021/acs.nanolett.2c03710
Abstract:
Owing to its high volumetric capacity and natural abundance, magnesium (Mg) metal has attracted tremendous attention as an ideal anode material for rechargeable Mg batteries. Despite Mg deposition playing an integral role in determining the cycling lifespan, its exact behavior is not clearly understood yet. Herein, for the first time, we introduce a facile approach to build magnesiophilic In/MgIn sites in situ on a Mg metal surface using InCl3 electrolyte additive for rechargeable Mg batteries. These magnesiophilic sites can regulate Mg deposition behaviors by homogenizing the distributions of Mg-ion flux and electric field at the electrode–electrolyte interphase, allowing flat and compact Mg deposition to inhibit short-circuiting. The as-designed Mg metal batteries achieve a stable cycling lifespan of 340 h at 1.0 mA cm–2 and 1.0 mAh cm–2 using Celgard separators, while the full cell coupled with Mo6S8 cathode maintains a high capacity retention of 95.5% over 800 cycles at 1 C.
License type:
Publisher Copyright
Funding Info:
This research is supported by core funding from: SERC
Grant Reference no. : NA

The Czech Science Foundation (GACR no. 20-16124J).
Description:
This document is the Accepted Manuscript version of a Published Work that appeared in final form in Nano Letters, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/acs.nanolett.2c03710
ISSN:
1530-6992
1530-6984
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