MXene‐Based Anode‐Free Magnesium Metal Battery

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MXene‐Based Anode‐Free Magnesium Metal Battery
Title:
MXene‐Based Anode‐Free Magnesium Metal Battery
Journal Title:
Advanced Functional Materials
Publication Date:
01 June 2023
Citation:
Li, Y., Feng, X., Lieu, W. Y., Fu, L., Zhang, C., Ghosh, T., Thakur, A., Wyatt, B. C., Anasori, B., Liu, W., Zhang, Q., Lu, J., & Seh, Z. W. (2023). MXene‐Based Anode‐Free Magnesium Metal Battery. Advanced Functional Materials. Portico. https://doi.org/10.1002/adfm.202303067
Abstract:
Rechargeable magnesium batteries (RMBs) are promising next-generation low-cost and high-energy devices. Among all RMBs, anode-free magnesium metal batteries that use in situ magnesium-plated current collectors as negative electrodes can afford optimal energy densities. However, anode-free magnesium metal batteries have remained elusive so far, as their practical application is plagued by low Mg plating/stripping efficiency due to nonuniform Mg deposition on conventional anode current collectors. Herein, for the first time, an anode-free Mg-metal battery is developed by employing a 3D MXene (Ti3C2Tx) film with horizontal Mg electrodeposition. The magnesiophilic oxygen and reactive fluorine terminations in MXene enable an enriched local magnesium-ion concentration and a durable magnesium fluoride-rich solid electrolyte interphase on the Ti3C2Tx film surface. Meanwhile, Ti3C2Tx MXene exhibits a high lattice geometrical fit with Mg (≈96%) to guide the horizontal electrodeposition of Mg. Consequently, the developed Ti3C2Tx film achieves reversible Mg plating/stripping with high Coulombic efficiencies (>99.4%) at high-current-density (5.0 mA cm−2) and high-Mg-utilization (50%) conditions. When this Ti3C2Tx film is coupled with a pre-magnesized Mo6S8 cathode, the anode-free Mg-metal full-cell prototype exhibits a volumetric energy density five times higher than its standard Mg-metal counterpart. This work provides insights into the rational design of anode current collectors to guide horizontal Mg electrodeposition for anode-free Mg metal batteries.
License type:
Publisher Copyright
Funding Info:
This research is supported by core funding from: SERC
Grant Reference no. : NA
Description:
This is the peer reviewed version of the following article: Li, Y., Feng, X., Lieu, W. Y., Fu, L., Zhang, C., Ghosh, T., Thakur, A., Wyatt, B. C., Anasori, B., Liu, W., Zhang, Q., Lu, J., & Seh, Z. W. (2023). MXene‐Based Anode‐Free Magnesium Metal Battery. Advanced Functional Materials. Portico. https://doi.org/10.1002/adfm.202303067, which has been published in final form at doi.org/10.1002/adfm.202303067. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.
ISSN:
1616-3028
1616-301X
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