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 1-6 228-230

Ämneskategorier

Annan teknik

Den kondenserade materiens fysik

DOI

10.1016/j.ssi.2007.12.045

Mer information

Skapat

2017-10-06