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
Article, Bibliographie
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.
| Item Type: | Article |
|---|---|
| Erschienen: | 2023 |
| Creators: | Kempf, Alexander ; Kiefer, Samira A. ; Graczyk-Zajac, Magdalena ; Ionescu, Emanuel ; Riedel, Ralf |
| Type of entry: | Bibliographie |
| Title: | Tin-functionalized silicon oxycarbide as a stable, high-capacity anode material for Na-ion batteries |
| Language: | English |
| Date: | September 2023 |
| Journal or Publication Title: | Open Ceramics |
| Volume of the journal: | 15 |
| DOI: | 10.1016/j.oceram.2023.100388 |
| 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. |
| Uncontrolled Keywords: | Sodium-ion battery; SiOC; Tin; Polymer-derived ceramics |
| Additional Information: | Artikel-ID: 100388 |
| Divisions: | 11 Department of Materials and Earth Sciences 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences > Material Science > Dispersive Solids |
| TU-Projects: | DFG|GR4440/4-1|Jenseits der Li-Ione |
| Date Deposited: | 15 Aug 2023 06:36 |
| Last Modified: | 15 Aug 2023 06:36 |
| PPN: | 510628540 |
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| Suche nach Titel in: | TUfind oder in Google |
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