Concentration polarization and ionic conductivity of nanocomposite thermoelectric materials K0.01Cu1.94S, K0.02Cu1.94S, K0.03Cu1.94S

M. M. Kubenova, L.N. Gumilyov Eurasian National University, Astana, KazakhstanFollow
M. Kh. Balapanov, Ufa University of Science and Technology, Ufa, RussiaFollow
K. A. Kuterbekov, L.N. Gumilyov Eurasian National University, Astana, Kazakhstan
B. Akhmetgaliev, Ufa University of Science and Technology, Ufa, Russia
R. Kh. Ishembetov, Ufa University of Science and Technology, Ufa, Russia
R. F. Almukhametov, Ufa University of Science and Technology, Ufa, Russia
M. Zeleev, Bashkir State Medical University, Ufa, Russia
A. M. Kabyshev, L.N. Gumilyov Eurasian National University, Astana, Kazakhstan
K. Zh. Bekmyrza, L.N. Gumilyov Eurasian National University, Astana, Kazakhstan
R. Alina, L.N. Gumilyov Eurasian National University, Astana, Kazakhstan
R. E. Kondakirov, L.N. Gumilyov Eurasian National University, Astana, Kazakhstan
M. K. Kenzhebek, L.N. Gumilyov Eurasian National University, Astana, Kazakhstan

Abstract

The paper presents experimental results of concentration polarization and ionic conductivity of nanocom- posite thermoelectric materials K0.01Cu1.94S , K0.02Cu1.94S , K0.03Cu1.94S . According to X-ray phase analysis, the synthesized samples are monoclinic jarleite Cu1.93÷1.97S with an admixture of oxygen ox- ide Cu2S and monoclinic chalcocyte. High values of total ionic conductivity are observed, ranging from 0.86 to 1.5 Cm/cm. The lowest ionic conductivity (0.86 Cm/cm at 355 ◦ C) is observed for alloy K0.02Cu1.94S . In addition, it was found that with an increase in the concentration of potassium in the studied materials, ionic conductivity tends to decrease, activation energy increases, but the characteris- tics of ion transport remain high, corresponding to superionic materials

Recommended Citation

Kubenova, M. M.; Balapanov, M. Kh.; Kuterbekov, K. A.; Akhmetgaliev, B.; Ishembetov, R. Kh.; Almukhametov, R. F.; Zeleev, M.; Kabyshev, A. M.; Bekmyrza, K. Zh.; Alina, R.; Kondakirov, R. E.; and Kenzhebek, M. K. (2024) "Concentration polarization and ionic conductivity of nanocomposite thermoelectric materials K0.01Cu1.94S, K0.02Cu1.94S, K0.03Cu1.94S," Eurasian Journal of Physics and Functional Materials: Vol. 8: No. 1, Article 5.
DOI: https://doi.org/10.32523/ejpfm.2024080105