Conductivity of alkali perchlorates at high temperatures
Artikel i vetenskaplig tidskrift, 2008
Ionic conductivity of high-temperature phases of alkaline metal perchlorates is studied. It is found that the conductivity passes through a minimum with increasing radius of cation, and KClO4 exhibits the lowest conductivity. This is explained by a decrease in the relative size of conduction channel, which hampers the cation transfer, and an increase in the relative free volume. The free-volume increase promotes the perchlorate anion reorientation and reduces the activation energy for ion transfer by the "paddle-wheel" mechanism, as a result, the conductivity increases. (c) 2007 Elsevier B.V. All rights reserved.
paddle-wheel
ionic conductivity
reorientation of anions
mechanism
perchlorates
Författare
A. S. Ulihin
Institute of Solid State Chemistry and Mechanochemistry of the Siberian Branch of the RAS
N. F. Uvarov
Institute of Solid State Chemistry and Mechanochemistry of the Siberian Branch of the RAS
Bengt-Erik Mellander
Chalmers, Teknisk fysik, Fasta tillståndets fysik
Solid State Ionics
0167-2738 (ISSN)
Vol. 179 1-6 228-230Ämneskategorier (SSIF 2011)
Annan teknik
Den kondenserade materiens fysik
DOI
10.1016/j.ssi.2007.12.045