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Proton Conduction of MLaNb2O7 (M = K, Na, H) with a Layered Perovskite Structure

✍ Scribed by M. Sato; T. Jin; K. Uematsu

Publisher: Elsevier Science
Year: 1993
Tongue: English
Weight: 167 KB
Volume: 102
Category: Article
ISSN: 0022-4596
DOI: 10.1006/jssc.1993.1067

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✦ Synopsis

The conductivities of the perovskite layered compounds (\mathrm{KLaNb}{12} \mathrm{O}{7}) and its ion-exchanged forms (M \mathrm{LaNb}{2} \mathrm{O}{7} \cdot x \mathrm{H}{2} \mathrm{O}(M=\mathrm{Na} \cdot \mathrm{H})) were investigated in the temperature range 20 to (80^{\circ} \mathrm{C}) by complex impedance measurement with the samples held at various water vapor pressures. The conductivity for all the compounds obeyed the relationship or (\times \mathrm{P}{\mathrm{H}{1}, 0}^{\mathrm{I} / \mathrm{m}}), although the (\mathrm{KLaNb}{2} \mathrm{O}_{7}) compound has no hydrous form. This fact suggested the possibility of proton conduction through the surfaces of particles. O 1993 Academic Press, Inc.

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