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Autor(en): Murugan, Saravanakumar
Klostermann, Sina V.
Frey, Wolfgang
Kästner, Johannes
Buchmeiser, Michael R.
Titel: A sodium bis(perfluoropinacol) borate-based electrolyte for stable, high-performance room temperature sodium-sulfur batteries based on sulfurized poly(acrylonitrile)
Erscheinungsdatum: 2021
Dokumentart: Zeitschriftenartikel
Seiten: 6, 7
Erschienen in: Electrochemistry communications 132 (2021), No. 107137
URI: http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-ds-117541
http://elib.uni-stuttgart.de/handle/11682/11754
http://dx.doi.org/10.18419/opus-11737
ISSN: 1388-2481
Zusammenfassung: A new type of electrolyte salt based on a weakly coordinating anion (Na-PPB) for RT Na-SPAN batteries has been developed. Na-PPB was synthesized in bulk via a one-pot reaction. NMR spectroscopy reveals high purity of the salt and stability even under ambient atmospheric conditions. Single-crystal X-ray analysis confirmed the molecular structure of Na-PPB with Na+ coordinated by one DME molecule. The electrolyte containing Na-PPB with PC + 10 wt% FEC showed high oxidative stability on Al current collector exceeding 5.5 V. In a Na-SPAN cell, the Na-PPB electrolyte allows for an initial and final discharge capacity (500 cycles) of 1140 mAh/gsulfur and 965 mAh/gsulfur respectively, obtained at 2C (3.35 A/gsulfur). The excellent electrochemical performance and good chemical stability of Na-PPB offers access to the design of novel electrolyte salts for RT Na-SPAN batteries.
Enthalten in den Sammlungen:03 Fakultät Chemie

Dateien zu dieser Ressource:
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1-s2.0-S1388248121002216-main.pdfArticle2,38 MBAdobe PDFÖffnen/Anzeigen
1-s2.0-S1388248121002216-mmc1.pdfSupporting information1,12 MBAdobe PDFÖffnen/Anzeigen


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