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

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

Nano Letters

10.1021/acs.nanolett.2c03710

http://dx.doi.org/10.1021/acs.nanolett.2c03710

Gaoliang Yang, Yuanjian Li, Chang Zhang, Jianbiao Wang, Yang Bai, Carina Yi Jing Lim, Man-Fai Ng, Zhi Chang, Sonal Kumar, Zdenek Sofer, Wei Liu, Zhi Wei Seh

Mechanical Engineering, General Materials Science, General Chemistry, Condensed Matter Physics, Bioengineering

10 November 2022

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

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.

Publisher Copyright

This research is supported by core funding from: SERC
Grant Reference no. : NA

The Czech Science Foundation (GACR no. 20-16124J).

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

https://oar.a-star.edu.sg/communities-collections/articles/19140

1530-6992
1530-6984

Institute of Materials Research and Engineering