Comparative Study of the Ion Conductivities of Substituted Tetrabutylammonium Salts (C4H9)4N]BF4 and [(C4H9)4N]Br1
A. A. Iskakovaa, *, A. S. Ulikhina, N. F. Uvarova, b, c, K. B. Gerasimova, and Yu. G. Mateishinaa
Translated by L. Smolina
aInstitute of Solid State Chemistry and Mechanochemistry, Siberian Branch, Russian Academy of Sciences,
Novosibirsk, 630128 Russia
bNovosibirsk State Technical University, Novosibirsk, 630073 Russia
cNovosibirsk State University, Novosibirsk, 630090 Russia
Correspondence to: *e-mail: anastasiya.shev@gmail.com
1Published on the basis of a report delivered at the 13th International Meeting “Fundamental Problems of Solid State Ionics,” Chernogolovka, 2016.
Received 1 August, 2016
Abstract—The ion conductivity of the salts [(C4H9)4N]BF4 and [(C4H9)4N]Br was studied in vacuum at temperatures from room temperature to 190 and 135°C, respectively. The salts have phase transitions to disordered high-temperature phases accompanied by an increase in conductivity. [(C4H9)4N]Br has higher conductivity than [(C4H9)4N]BF4. As the conductivity decreases with the increasing size of the anion, the BF4– and Br– anions are the most probable current carriers in the salts.
Keywords: ion conductivity, orientational disordering, tetrabutylammonium tetrafluoroborate, tetrabutylammonium bromide
DOI: 10.1134/S1023193517080079