| Title: | A Mechanistic Study of Magnesium Sulfur Batteries |
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| Authors: | ID Robba, Ana, Kemijski Inštitut Ljubljana (Author)
ID Vižintin, Alen, Kemijski Inštitut Ljubljana (Author)
ID Bitenc, Jan, Kemijski Inštitut Ljubljana (Author)
ID Mali, Gregor, Kemijski Inštitut Ljubljana (Author)
ID Arčon, Iztok, Univerza v Novi Gorici (Author)
ID Kavčič, Matjaž, Inštitut Jožef Stefan (Author)
ID Žitnik, Matjaž, Inštitut Jožef Stefan (Author)
ID Bučar, Klemen, Inštitut Jožef Stefan (Author)
ID Aquilanti, Giuliana, ELETTRA, Trieste, IT (Author)
ID Martineau-Corcos, Charlotte, Université de Versailles Saint-Quentin-en-Yvelines, France (Author)
ID Randon-Vitanova, Anna, HONDA R&D Europe (Deutschland) GmbH, Germany (Author)
ID Dominko, Robert, Kemijski Inštitut Ljubljana (Author) |
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| Files: |
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| Language: | English |
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| Work type: | Not categorized |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | UNG - University of Nova Gorica
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| Abstract: | Magnesium sulfur batteries are considered as attractive energy storage devices due to the
abundance of electrochemically active materials and high theoretical energy density. Here we
report the mechanism of a Mg-S battery operation, which was studied in the presence of
simple and commercially available salts dissolved in a mixture of glymes. The electrolyte
offers high sulfur conversion into MgS in the first discharge with low polarization. The
electrochemical conversion of sulfur with magnesium proceeds through two well-defined
plateaus, which correspond to the equilibrium between sulfur and polysulfides (high-voltage
plateau) and polysulfides and MgS (low-voltage plateau). As shown by XANES, RIXS and
NMR studies, the end discharge phase involves MgS with Mg atoms in a tetrahedral
environment resembling the wurtzite structure, while chemically synthesized MgS crystalizes
in the rock-salt structure with octahedral coordination of magnesium. |
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| Keywords: | magnesium, sulfur, rechargeable batteries, XAS, NMR |
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| Publication version: | Version of Record |
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| Year of publishing: | 2017 |
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| Number of pages: | 29 |
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| Numbering: | 1 |
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| PID: | 20.500.12556/RUNG-3323-e7676581-8da3-01c3-1fa8-35a5f086f47e |
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| COBISS.SI-ID: | 4933883 |
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| DOI: | 10.1021/acs.chemmater.7b03956 |
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| NUK URN: | URN:SI:UNG:REP:DCJGHMCN |
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| Publication date in RUNG: | 19.10.2017 |
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| Views: | 5274 |
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| Downloads: | 0 |
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