We demonstrate the potential of polymer-derived ceramics (PDC) as next-generation sustainable thermoelectrics. Thermoelectric behavior of polymer-derived silicon oxycarbide (SiOC) ceramics (containing hexagonal boron nitride (h-BN) as filler) was studied as a function of measurement temperature. SiOC, sintered at 1300 °C exhibited invariant low thermal conductivity (∼1.5 W/(m·K)) over 30–600 °C, coupled with a small increase in both Seebeck coefficient and electrical conductivity, with increase in measurement temperature (30–150 °C). SiOC ceramics containing 1 wt % h-BN showed the highest Seebeck coefficient (−33 μV/K) for any PDC thus far.

中文翻译：

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聚合物衍生的氧化硅陶瓷有望成为下一代可持续热电产品

我们展示了聚合物衍生的陶瓷（PDC）作为下一代可持续热电产品的潜力。研究了源自聚合物的碳氧化硅（SiOC）陶瓷（包含六方氮化硼（h-BN）作为填充剂）的热电行为与测量温度的关系。在1300°C的温度下烧结的SiOC在30–600°C的温度下表现出恒定的低热导率（〜1.5 W /（m·K）），并且随着测量温度的升高，塞贝克系数和电导率均略有增加（30 –150°C）。到目前为止，对于任何PDC而言，含有1 wt％h-BN的SiOC陶瓷都显示出最高的塞贝克系数（-33μV/ K）。