| Naslov: | Sulfur speciation in Li–S batteries determined by operando laboratory X-ray emission spectroscopy |
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| Avtorji: | ID Rajh, Ava (Avtor)
ID Vižintin, Alen (Avtor)
ID Hoszowska, Joanna (Avtor)
ID Dominko, Robert (Avtor)
ID Kavčič, Matjaž (Avtor) |
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| Datoteke: |  URL - Izvorni URL, za dostop obiščite https://pubs.acs.org/doi/10.1021/acsaem.4c02330
 PDF - Predstavitvena datoteka, prenos (2,22 MB)
MD5: C4778DF1BBDD8D8061305A092592AED6
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| Jezik: | Angleški jezik |
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| Tipologija: | 1.01 - Izvirni znanstveni članek |
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| Organizacija: |  KI - Kemijski inštitut
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| Povzetek: | In this work, operando sulfur X-ray emission measurementson a Li−S battery cathode were performed using a laboratory setup as analternative to more common synchrotron radiation based absorptionstudies. Photoexcitation by an X-ray tube was used. Valence-to-core Kβ X-ray emission spectra were recorded with a wavelength dispersive crystalspectrometer in von Hamos geometry, providing excellent energyresolution and good detection efficiency. The setup was used to recordex situ S Kβ emission spectra from S cathodes from the Li−S battery andalso under operando conditions. Average S oxidation state within thebattery cathode during battery cycling was determined from the shape ofthe Kβ emission spectra. A more detailed S species characterization wasperformed by fitting a linear combination of previously measuredlaboratory synthesized standards to the measured spectra. Relative amounts of different S species in the cathode were determinedduring the cycling of the Li−S battery. The main advantage of X-ray emission spectroscopy is that it can be performed onconcentrated samples with S loading comparable to a real battery. The approach shows great promise for routine laboratory analysisof electrochemical processes in Li−S batteries and other sulfur-based systems under operando conditions. |
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| Ključne besede: | X-ray emission spectroscopy, lithium−sulfur batteries, operando measurements, oxidation state, von Hamos spectrometer |
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| Status publikacije: | Objavljeno |
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| Verzija publikacije: | Objavljena publikacija |
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| Datum objave: | 01.12.2024 |
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| Založnik: | American Chemical Society |
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| Leto izida: | 2024 |
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| Št. strani: | str. 11135-11143 |
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| Številčenje: | Vol. 7, iss. 23 |
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| Izvor: | ACS applied energy materials |
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| PID: | 20.500.12556/DiRROS-21080  |
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| UDK: | 544.5/.6 |
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| ISSN pri članku: | 2574-0962 |
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| DOI: | 10.1021/acsaem.4c02330 |
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| COBISS.SI-ID: | 218392579 |
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| Avtorske pravice: | © 2024 The Authors. Published by American Chemical Society |
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| Opomba: | Nasl. z nasl. zaslona;
Soavtorji iz Slovenije: Alen Vizintin, Robert Dominko, Matjaž Kavčič;
Opis vira z dne 10. 12. 2024;
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| Datum objave v DiRROS: | 19.12.2024 |
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| Število ogledov: | 1015 |
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| Število prenosov: | 438 |
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| Metapodatki: |    |
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