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Chinese Materials Conference

CMC 2017: Advances in Energy and Environmental Materials pp 49–56Cite as

Quick Fabrication and Thermoelectric Properties of Doped Tetrahedrites

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Abstract

In this paper, the effect of annealing time on the microstructure and thermoelectric properties of Cu11.5Mn0.5Sb4S13 tetrahedrite was studied, hoping to shorten the fabrication time of bulk doped tetrahedrites. The results show that Cu11.5Mn0.5Sb4S13 tetrahedrite phase formed in the melt during cooling. The ingot consisted of principal phase of Cu11.5Mn0.5Sb4S13 and secondary phases of Cu3SbS4, Cu2S and CuSbS2. Long time annealing could not eliminate the Cu3SbS4 and CuSbS2 phases in Cu11.5Mn0.5Sb4S13 tetrahedrite. Sintering could eliminate Cu2S phase. Long time annealing had slight effect on electrical resistivity, and negligible effect on Seebeck coefficient and thermal conductivity of Cu11.5Mn0.5Sb4S13 tetrahedrite. All the Cu11.5Mn0.5Sb4S13 samples had ZT in excess of 0.6 at above 650 K and the maximum ZT value obtained in this study was 0.74 for the un-annealed sample. Cobalt doped tetrahedrite Cu11.5Co0.5Sb4S13 fabricated by the un-annealed process could also obtain a ZT value of ~0.7. Based on the experimental results, the time for preparing doped tetrahedrites can be cut considerably.

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Acknowledgements

This work is financially supported by Natural Science Foundation of China (51372261).

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Authors and Affiliations

  1. School of Materials and Engineering, Jiangsu University of Technology, Changzhou, 213001, China

    Ping Lv & Yun Yu

  2. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China

    Ping Lv & Xiaoya Li

Authors
  1. Ping Lv
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  2. Yun Yu
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  3. Xiaoya Li
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Corresponding author

Correspondence to Xiaoya Li .

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Editors and Affiliations

  1. Chinese Materials Research Society, Beijing, China

    Yafang Han

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Lv, P., Yu, Y., Li, X. (2018). Quick Fabrication and Thermoelectric Properties of Doped Tetrahedrites. In: Han, Y. (eds) Advances in Energy and Environmental Materials. CMC 2017. Springer Proceedings in Energy. Springer, Singapore. https://doi.org/10.1007/978-981-13-0158-2_7

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  • DOI: https://doi.org/10.1007/978-981-13-0158-2_7

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-13-0157-5

  • Online ISBN: 978-981-13-0158-2

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