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High-temperature and radiation-resistant spinel-type ferrite coating for thermo-optical conversion in radioisotope thermophotovoltaic generators

Author

Listed:
  • Wang, Hongyu
  • Xu, Zhiheng
  • Yuan, Zicheng
  • Liu, Kai
  • Meng, Caifeng
  • Tang, Xiaobin

Abstract

High-temperature radioisotope heat source surface coated with excellent performance of thermo-optical conversion coating can greatly improve thermophotovoltaic energy utilization. However, long-term high-temperature and radiation resistance of the thermo-optical conversion pose a great challenge. In this work, spinel-type ferrite thermo-optical conversion coating was proposed to improve the heat and irradiation stability and output power of a radioisotope thermophotovoltaic (RTPV) prototype. Under the continuous irradiation of 32.64 kGy for 24 h at 1400 K, the emissivity of the spinel-type ferrite thermo-optical conversion coating could maintain more than 90%. In addition, the surface morphology of the coating was changed under high temperature, which enhanced its surface emissivity. Spinel-type ferrite thermo-optical conversion coating was applied to the RTPV prototype, which achieved a maximum output power of 144.23 mW. Compared with the RTPV prototype without coating, the overall output increased to 181.51%. Spinel-type ferrite thermo-optical conversion coating showed great application potential in the fields of thermo-optical conversion and high-efficiency utilization of thermal energy.

Suggested Citation

  • Wang, Hongyu & Xu, Zhiheng & Yuan, Zicheng & Liu, Kai & Meng, Caifeng & Tang, Xiaobin, 2022. "High-temperature and radiation-resistant spinel-type ferrite coating for thermo-optical conversion in radioisotope thermophotovoltaic generators," Energy, Elsevier, vol. 239(PD).
    • Handle: RePEc:eee:energy:v:239:y:2022:i:pd:s0360544221025032
    DOI: 10.1016/j.energy.2021.122255
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    References listed on IDEAS

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    1. Wang, Xiawa & Liang, Renrong & Fisher, Peter & Chan, Walker & Xu, Jun, 2020. "Critical design features of thermal-based radioisotope generators: A review of the power solution for polar regions and space," Renewable and Sustainable Energy Reviews, Elsevier, vol. 119(C).
    2. Yuan, Zicheng & Tang, Xiaobin & Xu, Zhiheng & Li, Junqin & Chen, Wang & Liu, Kai & Liu, Yunpeng & Zhang, Zhengrong, 2018. "Screen-printed radial structure micro radioisotope thermoelectric generator," Applied Energy, Elsevier, vol. 225(C), pages 746-754.
    3. Liu, Kai & Tang, Xiaobin & Liu, Yunpeng & Xu, Zhiheng & Yuan, Zicheng & Zhang, Zhengrong, 2020. "Enhancing the performance of fully-scaled structure-adjustable 3D thermoelectric devices based on cold–press sintering and molding," Energy, Elsevier, vol. 206(C).
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