Thermal conductivity of new nanocomposite superionic semiconductors K0.01Cu1.96S, K0.02Cu1.95S, K0.03Cu1.94S, K0.04Cu1.93S, K0.05Cu1.94S

Authors

  • M. M. Kubenova Author
  • M.Kh. Balapanov Author
  • R.Kh. Ishembetov Author
  • K.A. Kuterbekov Author
  • R.F. Almukhametov Author
  • K.Zh. Bekmyrza Author
  • A.M. Kabyshev Author
  • R.Sh. Palymbetov Author
  • L.U. Taimuratova Author

Abstract

In this work, we investigated the effect of nanostructuring on the thermoelectric and thermal properties of nonstoichiometric solid splavs doped with copper sulfides with potassium. The synthesized alloys K0.01Cu1.96S, K0.02Cu1.95S, K0.03Cu1.94S, K0.04Cu1.93S, K0.05Cu1.94S are nanocomposite. The crystallite sizes of the synthesized powder, as estimated from the half-width of X-ray diffraction lines, range from 7 to 180 nm. Sample K0.01Cu1.96S is a mixture of phases consisting of chalcocite Cu2S (82%), jarleite Cu1.96S (12%), anilite Cu1.75S (6%). The composition of samples K0.02Cu1.95S and K0.03Cu1.94S includes the most common phases of copper sulfides - chalcocite Cu2S , jarleite Cu1.96S, digenite Cu1.80S. Samples K0.04Cu1.93S and K0.05Cu1.94S consist of jarleite Cu1.96S, digenite Cu1.80S and potassium copper sulfide KCu4S3 phases. In a practical sense, the extremely low thermal conductivity values (from 0.16 to 0.80 W/m · K) found in the range of 300–700 K for nanocomposite samples K0.02Cu1.95S and K0.03Cu1.94S are very favorable for achieving high thermoelectric figure of merit ZT material.

Recommended Citation

Kubenova, M. M.; Balapanov, M. Kh.; Ishembetov, R. Kh.; Kuterbekov, K. A.; Almukhametov, R. F.; Bekmyrza, K. Zh.; Kabyshev, A. M.; Palymbetov, R. Sh.; and Taimuratova, L. U. (2023) "Thermal conductivity of new nanocomposite superionic semiconductors K0.01Cu1.96S, K0.02Cu1.95S, K0.03Cu1.94S, K0.04Cu1.93S, K0.05Cu1.94S," Eurasian Journal of Physics and Functional Materials: Vol. 7: No. 3, Article 7.
DOI: https://doi.org/10.32523/ejpfm.2023070307

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Published

2026-03-06

Issue

Vol. 7 No. 3 (2023): Volume 7, Number 3 (2023)

Section

Original Research Articles

License

The Eurasian Journal of Physics and Functional Materials is an open-access journal. Articles published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) may be shared, redistributed, and adapted, including for commercial purposes, provided that the terms of the license are followed, including appropriate attribution to the original authors and source.

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How to Cite

(1)
Kubenova, M.; Balapanov, M.; Ishembetov, R.; Kuterbekov, K.; Almukhametov, R.; Bekmyrza, K.; Kabyshev, A.; Palymbetov, R.; Taimuratova, L. Thermal Conductivity of New Nanocomposite Superionic Semiconductors K0.01Cu1.96S, K0.02Cu1.95S, K0.03Cu1.94S, K0.04Cu1.93S, K0.05Cu1.94S. Eur. J. Phys. Funct. Mater. 2026, 7 (3).