Kempf, Alexander ; Kiefer, Samira A. ; Graczyk-Zajac, Magdalena ; Ionescu, Emanuel ; Riedel, Ralf (2023)
Tin-functionalized silicon oxycarbide as a stable, high-capacity anode material for Na-ion batteries.
In: Open Ceramics, 15
doi: 10.1016/j.oceram.2023.100388
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
In this study tin-functionalized silicon oxycarbide, Sn/SiOC, composite anode materials are synthesized using a carbon-rich polysiloxane as the preceramic polymer and nano-sized SnO2, which converts to metallic tin via carbothermal reduction at approximately 700 °C. The in-situ Sn formation leads to a uniform distribution of tin particles within a carbon-rich SiOC matrix. Raman spectra show no significant changes despite the carbothermal reduction of SnO2. The composite material provides a stable reversible capacity of 234 mAh g-1. By adjusting the composition and pyrolysis temperature a reversible capacity of 131 mAh g-1 at a high current rate of 2380 mA g-1 is achieved.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2023 |
| Autor(en): | Kempf, Alexander ; Kiefer, Samira A. ; Graczyk-Zajac, Magdalena ; Ionescu, Emanuel ; Riedel, Ralf |
| Art des Eintrags: | Bibliographie |
| Titel: | Tin-functionalized silicon oxycarbide as a stable, high-capacity anode material for Na-ion batteries |
| Sprache: | Englisch |
| Publikationsjahr: | September 2023 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Open Ceramics |
| Jahrgang/Volume einer Zeitschrift: | 15 |
| DOI: | 10.1016/j.oceram.2023.100388 |
| Kurzbeschreibung (Abstract): | In this study tin-functionalized silicon oxycarbide, Sn/SiOC, composite anode materials are synthesized using a carbon-rich polysiloxane as the preceramic polymer and nano-sized SnO2, which converts to metallic tin via carbothermal reduction at approximately 700 °C. The in-situ Sn formation leads to a uniform distribution of tin particles within a carbon-rich SiOC matrix. Raman spectra show no significant changes despite the carbothermal reduction of SnO2. The composite material provides a stable reversible capacity of 234 mAh g-1. By adjusting the composition and pyrolysis temperature a reversible capacity of 131 mAh g-1 at a high current rate of 2380 mA g-1 is achieved. |
| Freie Schlagworte: | Sodium-ion battery; SiOC; Tin; Polymer-derived ceramics |
| Zusätzliche Informationen: | Artikel-ID: 100388 |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Disperse Feststoffe |
| TU-Projekte: | DFG|GR4440/4-1|Jenseits der Li-Ione |
| Hinterlegungsdatum: | 15 Aug 2023 06:36 |
| Letzte Änderung: | 15 Aug 2023 06:36 |
| PPN: | 510628540 |
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