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Enhanced thermoelectric performance in SnSe based composites with PbTe nanoinclusions

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  • Li, D.
  • Li, J.C.
  • Qin, X.Y.
  • Zhang, J.
  • Xin, H.X.
  • Song, C.J.
  • Wang, L.

Abstract

Although single crystalline SnSe has high thermoelectric figure of merit ZT, the highest ZT reported for polycrystalline SnSe-based material is not larger than 1. Here we show that a record value of ZT = 1.26 at 880 K is achieved for polycrystalline SnSe based composites with PbTe nanoinclusions. Our results indicate that the high performance arises from simultaneous increase in power factor and thermal resistance. The increased power factor mainly originates from enhanced electrical conductivity due to increased carrier concentration; while the large (∼25%) reduction of thermal conductivity can be ascribed to both the interface scattering of phonons and inhibition of bipolar effect. Present result demonstrates that the introduction of proper nanoinclusions can effectively elevate the thermoelectric performance of polycrystalline SnSe compound.

Suggested Citation

  • Li, D. & Li, J.C. & Qin, X.Y. & Zhang, J. & Xin, H.X. & Song, C.J. & Wang, L., 2016. "Enhanced thermoelectric performance in SnSe based composites with PbTe nanoinclusions," Energy, Elsevier, vol. 116(P1), pages 861-866.
    • Handle: RePEc:eee:energy:v:116:y:2016:i:p1:p:861-866
    DOI: 10.1016/j.energy.2016.10.023
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    1. Li-Dong Zhao & Shih-Han Lo & Yongsheng Zhang & Hui Sun & Gangjian Tan & Ctirad Uher & C. Wolverton & Vinayak P. Dravid & Mercouri G. Kanatzidis, 2014. "Ultralow thermal conductivity and high thermoelectric figure of merit in SnSe crystals," Nature, Nature, vol. 508(7496), pages 373-377, April.
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    Cited by:

    1. Jia, Xiao-Dong & Wang, Yuan-Jing & Gao, Yuan-Wen, 2017. "Numerical simulation of thermoelectric performance of linear-shaped thermoelectric generators under transient heat supply," Energy, Elsevier, vol. 130(C), pages 276-285.
    2. Liu, Wei-Di & Yu, Yao & Dargusch, Matthew & Liu, Qingfeng & Chen, Zhi-Gang, 2021. "Carbon allotrope hybrids advance thermoelectric development and applications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 141(C).

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