| Title: | A Mechanistic Study of Magnesium Sulfur Batteries |
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| Authors: | Robba, Ana (Author)
Vižintin, Alen (Author)
Bitenc, Jan (Author)
Mali, Gregor (Author)
Arčon, Iztok (Author)
Kavčič, Matjaž (Author)
Žitnik, Matjaž (Author)
Bučar, Klemen (Author)
Aquilanti, Giuliana (Author)
Martineau-Corcos, Charlotte (Author)
Randon-Vitanova, Anna (Author)
Dominko, Robert (Author) |
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| Files: | This document has no files. This document may have a phisical copy in the library of the organization, check the status via COBISS.  |
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| Language: | English |
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| Work type: | Not categorized (r6) |
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| Tipology: | 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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| Year of publishing: | 2017 |
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| Number of pages: | 29 |
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| Numbering: | 1 |
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| COBISS_ID: | 4933883 |
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| URN: | URN:SI:UNG:REP:DCJGHMCN |
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| DOI: | 10.1021/acs.chemmater.7b03956 |
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| License: | 
This work is available under this license: Creative Commons Attribution Non-Commercial No Derivatives 4.0 International |
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| Views: | 3628 |
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| Downloads: | 0 |
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| Metadata: |     |
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| Categories: | Document is not linked to any category. |
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