The paper presents the results of the studies of thermal properties of nanocrystalline superionic NaxCu1.75S (x=0.1, 0.15, 0.2, 25) compositions, and preliminary results of Na0.1Cu1.75S using as energy stored cathode material in Na-ion half-cell with NaPF 6 electrolyte and Na anode. The compositions contain a few copper sulfide phases: monoclinic chalcocite Cu2S , orthorhombic ...

Kubenova, M.M.; Kuterbekov, K.A.; Balapanov, M.Kh.; Ishembetov, R.Kh.; Akhmetgaliev, B.M.; Kabyshev, A.M.; Bekmyrza, K.Zh.; Zeleev, M.Kh.; Palymbetov, R.Sh.; and Baikhozhaeva, B.U. (2023) "Thermal and electrical properties of nanocrystalline superionic NaxCu1.75S (x=0.1, 0.15, 0.2, 25) compounds," Eurasian Journal of Physics and Functional Materials: Vol. 7: No. 1, Article 4. ...

Synthesis, X-ray phase analysis, electron microscopy and investigations of the thermoelectric and thermal properties of nanocrystalline copper sulfide alloys contained sodium are presented. At room temperature, the alloys are a mixture of three phases of copper sulfide - the monoclinic phase of Na2Cu4S3 , the hexagonal phase of Cu2S and the cubic phase of Cu9S5 (digenite). The ...

Nanocrystalline alloys of the compositions Na 0.05 Cu 1.95 S, Na 0.075 Cu 1.925 S, Na 0.10 Cu 1.90 S, Na 0.125 Cu 1.750 S, Na 0.15 Cu 1.85 S, Na 0.17 Cu 1.80 S, Na 0.20 Cu 1.77 S were synthesized in a melt medium mixtures of hydroxides NaOH and KOH at a temperature of about 165 ◦ C. X-ray phase analysis showed that the alloys are heterophasic and consist of phases of Cu 9 S 5 ...