In-situ polymer-derived SiC/Si(B)OC ceramic nanocomposites: A sustainable potential candidate for high-temperature thermoelectric applications
Abstract
Polymer-derived ceramics are potential candidates for the next generation of high-temperature thermoelectrics due to their exceptional high-temperature stability and chemical resistance, characteristics that are absent in conventional thermoelectric intermetallic compounds. In this work, we prepared polymer-derived SiC/Si(B)OC ceramic nanocomposites by introducing B 4 C particles into polysiloxane, followed by high-temperature pyrolysis, and explored their microstructural evolution and thermoelectric properties. The addition of B 4 C has a catalytic effect on the growth of SiC and the graphitization of carbon, resulting in the establishment of a more efficient conduction network. Consequently, the electrical conductivity at room temperature increases from 81 S m −1 in the sample without B 4 C to 1103 S m −1 in the sample with the addition of 1 wt% B 4 C. The introduction of B 4 C leads to a higher content of the crystalline SiC phase, which in turn contributes to an enhanced Seebeck coefficient. Finally, a remarkable increase in ZT was observed. The highest ZT of 8.9 × 10 −4 was achieved in the sample with 1 wt% B 4 C at 1100 K. Although there is still a considerable distance to cover in achieving suitable ZT values in polymer-derived ceramics, this study provides a straightforward strategy for enhancing electrical transport properties.
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BibTeX
@article{ding2026insitu,
title = {{In-situ polymer-derived SiC/Si(B)OC ceramic nanocomposites: A sustainable potential candidate for high-temperature thermoelectric applications}},
author = {Jinxue Ding and Wei Li and Moritz Thiem and Wugang Fan and Siyuan Zhang and Dharma Teja Teppala and Kathy Lu and Emanuel Ionescu and Ralf Riedel and Anke Weidenkaff and Wenjie Xie},
journal = {Chemical Engineering Journal},
year = {2026},
month = oct,
doi = {10.1016/j.cej.2024.158420},
url = {https://hal.science/hal-05789885v1},
note = {CC BY},
}
RIS
TY - JOUR
TI - In-situ polymer-derived SiC/Si(B)OC ceramic nanocomposites: A sustainable potential candidate for high-temperature thermoelectric applications
AU - Jinxue Ding
AU - Wei Li
AU - Moritz Thiem
AU - Wugang Fan
AU - Siyuan Zhang
AU - Dharma Teja Teppala
AU - Kathy Lu
AU - Emanuel Ionescu
AU - Ralf Riedel
AU - Anke Weidenkaff
AU - Wenjie Xie
PY - 2026
DA - 2026/10/09
JO - Chemical Engineering Journal
DO - 10.1016/j.cej.2024.158420
UR - https://hal.science/hal-05789885v1
AB - Polymer-derived ceramics are potential candidates for the next generation of high-temperature thermoelectrics due to their exceptional high-temperature stability and chemical resistance, characteristics that are absent in conventional thermoelectric intermetallic compounds. In this work, we prepared polymer-derived SiC/Si(B)OC ceramic nanocomposites by introducing B 4 C particles into polysiloxane, followed by high-temperature pyrolysis, and explored their microstructural evolution and thermoelectric properties. The addition of B 4 C has a catalytic effect on the growth of SiC and the graphitization of carbon, resulting in the establishment of a more efficient conduction network. Consequently, the electrical conductivity at room temperature increases from 81 S m −1 in the sample without B 4 C to 1103 S m −1 in the sample with the addition of 1 wt% B 4 C. The introduction of B 4 C leads to a higher content of the crystalline SiC phase, which in turn contributes to an enhanced Seebeck coefficient. Finally, a remarkable increase in ZT was observed. The highest ZT of 8.9 × 10 −4 was achieved in the sample with 1 wt% B 4 C at 1100 K. Although there is still a considerable distance to cover in achieving suitable ZT values in polymer-derived ceramics, this study provides a straightforward strategy for enhancing electrical transport properties.
SN - 1385-8947
ER -