To be or not to be - Is MgSc2Se4 a Mg-Ion Solid Electrolyte?
dc.contributor.author | Glaser, Clarissa | |
dc.contributor.author | Wei, Zhixuan | |
dc.contributor.author | Indris, Sylvio | |
dc.contributor.author | Klement, Philip | |
dc.contributor.author | Chatterjee, Sangam | |
dc.contributor.author | Ehrenberg, Helmut | |
dc.contributor.author | Zhao-Karger, Zhirong | |
dc.contributor.author | Rohnke, Marcus | |
dc.contributor.author | Janek, Jürgen | |
dc.date.accessioned | 2023-12-07T08:42:35Z | |
dc.date.available | 2023-12-07T08:42:35Z | |
dc.date.issued | 2023 | |
dc.description.abstract | Magnesium batteries offer promising potential as next-generation sustainable energy-storage solutions due to the high theoretical capacity of the magnesium metal anode. Facilitating dendrite-free operation of metal anodes necessitates the development of solid electrolytes with high magnesium-ion conductivity. While the chalcogenide spinel MgSc2Se4 is predicted to exhibit high magnesium ion mobility, unequivocal experimental evidence for magnesium ion conduction beyond short-range motion is still missing. This study confirms magnesium-ion transport in MgSc2Se4 through two independent electrochemical methods: electrochemical deposition of magnesium metal and reversible magnesium plating/stripping cycling. To overcome the difficulty of measuring the ionic conductivity of the mixed conducting MgSc2Se4 spinel, a pure ion conducting interlayer is employed in a symmetric transference cell. This approach effectively suppresses the electron transport, allowing accurate characterization of the ionic conductivity. The experimental results confirm a low migration barrier of (386 ± 24) meV for magnesium ion transport in MgSc2Se4 and demonstrate one of the best performances at room temperature among the reported inorganic magnesium solid electrolytes. The findings open a new door for exploring additional mixed magnesium ion conductors and highlight the potential of magnesium chalcogenide spinels as a promising class of magnesium solid electrolytes. | |
dc.description.sponsorship | Deutsche Forschungsgemeinschaft (DFG); ROR-ID:018mejw64 | |
dc.identifier.uri | https://jlupub.ub.uni-giessen.de//handle/jlupub/18765 | |
dc.identifier.uri | http://dx.doi.org/10.22029/jlupub-18129 | |
dc.language.iso | en | |
dc.rights | Namensnennung - Nicht kommerziell - Keine Bearbeitungen 4.0 International | |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | |
dc.subject.ddc | ddc:540 | |
dc.title | To be or not to be - Is MgSc2Se4 a Mg-Ion Solid Electrolyte? | |
dc.type | article | |
local.affiliation | FB 08 - Biologie und Chemie | |
local.project | Project ID 390874152 (POLiS Cluster of Excellence). | |
local.source.articlenumber | 2301980 | |
local.source.journaltitle | Advanced energy materials | |
local.source.uri | https://doi.org/10.1002/aenm.202301980 | |
local.source.volume | 13 |
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