S3 Phases Synthesized Using the Sol
Gel and Cryochemical Technologies
L. A. Kalinina*, Yu. N. Ushakova, E. V. Koshurnikova, T. V. Mikhailichenko,
B. A. Ananchenko, and I. S. Yurlov
State Educational Institution of Higher Professional Education “Vyatka State University,”
ul. Moskovskaya 36, Kirov, 610000 Russia
*e-mail: lab230@rambler.ru
Received February 2, 2011
Abstract—The possibility of synthesizing sulfide-conducting solid electrolytes based on the ternary sulfides
MeLn2S4 doped with the binary sulfides 
S3 has been approved and the influence of dopants on the electro-
lytic properties of the basic compounds has been investigated for the first time. The influence of the specific
features of the method used for synthesizing complex sulfide phases from nanometer-sized oxide precursors on
the important functional properties of the solid electrolytes has been analyzed. The samples have been exam-
ined using the X-ray powder diffraction analysis, electron scanning microscopy, and electron microprobe anal-
ysis. The region of the existence of the solid solutions has been determined, the total electrical conductivity has
been studied, and the activation energy for electrical conduction for samples with different dopant contents has
been calculated. The ionic and electronic transfer numbers have been determined using the modified versions
of the emf method and the Hebb–Wagner polarization method. A possible mechanism of defect formation has
been proposed.
Keywords: solid electrolyte, sulfide ionic conduction, heterodopant, electrolytic properties, mechanism of
defect formation
DOI: 10.1134/S1087659611060095
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