Dielectric Relaxation and Protonic Conductivity
of Polyantimonic Crystalline Acid at Low Temperatures

F. A. Yaroshenko^z and V. A. Burmistrov

Chelyabinsk State University, ul Brat’ev Kashirinykh 129, Chelyabinsk, 454001 Russia

Received June 25, 2014

Abstract—The results of studies of polyantimonic crystalline acid with the composition of Sb₂O₅ 3.2H₂O
using the impedance spectroscopy technique at low temperatures are presented. Dependences of dielectric per-
mittivity, slope of dielectric losses, and electric module are studied in the frequency range of 100 Hz to 2MHz
and temperature range of 220–290 K. It is shown that the limiting stage is proton transport through crystal inter-
face. The activation energy of proton conductivity is 50.21 kJ/mol.

Keywords: proton conductor, polyantimonic acid, impedance, proton transport, proton conductivity

DOI: 10.1134/S1023193515050195

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