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


Kubenova M.M. Balapanov M.Kh. Ishembetov R.Kh. Kuterbekov K.A. Almukhametov R.F. Bekmyrza K.Zh. Kabyshev A.M. Palymbetov R.Sh. Taimuratova L.U.
2023L.N. Gumilyov Eurasian National University

Eurasian Journal of Physics and Functional Materials
2023#7Issue 3197 - 206 pp.

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.

nanocomposite , superionic semiconductors , thermal conductivity

Text of the article Перейти на текст статьи

L.N. Gumilyov Eurasian National University, Astana, Kazakhstan
Ufa University of Science and Technology, Ufa, Russian Federation
Caspian University of Technology and Engineering named after Sh. Yessenov, Aktau, Kazakhstan

L.N. Gumilyov Eurasian National University
Ufa University of Science and Technology
Caspian University of Technology and Engineering named after Sh. Yessenov

10 лет помогаем публиковать статьи Международный издатель

Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026