Progress in high-voltage MgMn2O4 oxyspinel as a cathode material in Mg batteries

Michail, Alexandra and Silvan Uriarte, Begona and Tapia-Ruiz, Nuria (2021) Progress in high-voltage MgMn2O4 oxyspinel as a cathode material in Mg batteries. Current Opinion in Electrochemistry. ISSN 2451-9103

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Abstract

Rechargeable magnesium batteries (RMBs) are a promising post-lithium battery technology that benefits from the use of a Mg metal anode, which provides a high volumetric capacity (3833 mAh/cm3), low reduction potential, and dendrite-free deposition. In parallel to the development of novel electrolytes compatible with Mg, the future realisation of rechargeable magnesium batteries demands cathode materials with high-energy densities and suitable Mg intercalation kinetics. In this mini-review, the focus will be laid on the high-voltage intercalation MgMn2O4 oxyspinel cathode (and substituted derivatives). We aim at providing an updated understanding of the reaction mechanisms occurring during (de)magnesiation of MgMn2O4, and the role of Mg/Mn anti-site defects in its electrochemical behaviour. We then critically evaluate the performance of MgMn2O4 in organic and aqueous-based electrolytes, highlighting their merits and challenges, and provide an overview of the most recent developments to improving battery performance. Finally, we will highlight key areas that require further attention to provide an understanding of their charge storage behaviour.

Item Type:
Journal Article
Journal or Publication Title:
Current Opinion in Electrochemistry
Additional Information:
This is the author’s version of a work that was accepted for publication in Current Opinion in Electrochemistry. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Current Opinion in Electrochemistry, ?, ?, 2021 DOI: 10.1016/j.coelec.2021.100817
ID Code:
160646
Deposited By:
Deposited On:
07 Oct 2021 10:35
Refereed?:
Yes
Published?:
Published
Last Modified:
08 Oct 2021 08:14