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) |
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: | 25 |
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Število prenosov: | 18 |
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Metapodatki: | |
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