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Peer-reviewedCC BY-NC-NDOpen Ceramics

Tin-functionalized silicon oxycarbide as a stable, high-capacity anode material for Na-ion batteries

  • Alexander Kempf
  • Samira Kiefer
  • Magdalena Graczyk-Zajac
  • Emanuel Ionescu
  • Ralf Riedel
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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.

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Cite

BibTeXRIS
BibTeX
@article{kempf2026tinfunctionalized,
  title = {{Tin-functionalized silicon oxycarbide as a stable, high-capacity anode material for Na-ion batteries}},
  author = {Alexander Kempf and Samira Kiefer and Magdalena Graczyk-Zajac and Emanuel Ionescu and Ralf Riedel},
  journal = {Open Ceramics},
  year = {2026},
  month = oct,
  doi = {10.1016/j.oceram.2023.100388},
  url = {https://hal.science/hal-05789766v1},
  note = {CC BY-NC-ND},
}
RIS
TY  - JOUR
TI  - Tin-functionalized silicon oxycarbide as a stable, high-capacity anode material for Na-ion batteries
AU  - Alexander Kempf
AU  - Samira Kiefer
AU  - Magdalena Graczyk-Zajac
AU  - Emanuel Ionescu
AU  - Ralf Riedel
PY  - 2026
DA  - 2026/10/09
JO  - Open Ceramics
DO  - 10.1016/j.oceram.2023.100388
UR  - https://hal.science/hal-05789766v1
AB  - 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.
SN  - 2666-5395
ER  -