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Conductivity dependence on oxygen partial pressure and transport number measurements of La2Mo2O9

Published online by Cambridge University Press:  03 September 2012

A. Tarancón ,
G. Dezanneau ,
A. Morata ,
F. Peiró ,
J.R. Morante  and
T. Norby
A. Tarancón
Affiliation:
EME (CEMIC&CeRMAE), Departament d'Electrònica, Universitat de Barcelona, Martí i Franquès, 1, 08028 Barcelona, SPAIN, e-mail: tarancon@el.ub.es
G. Dezanneau
Affiliation:
EME (CEMIC&CeRMAE), Departament d'Electrònica, Universitat de Barcelona, Martí i Franquès, 1, 08028 Barcelona, SPAIN, e-mail: tarancon@el.ub.es
A. Morata
Affiliation:
EME (CEMIC&CeRMAE), Departament d'Electrònica, Universitat de Barcelona, Martí i Franquès, 1, 08028 Barcelona, SPAIN, e-mail: tarancon@el.ub.es
F. Peiró
Affiliation:
EME (CEMIC&CeRMAE), Departament d'Electrònica, Universitat de Barcelona, Martí i Franquès, 1, 08028 Barcelona, SPAIN, e-mail: tarancon@el.ub.es
J.R. Morante
Affiliation:
EME (CEMIC&CeRMAE), Departament d'Electrònica, Universitat de Barcelona, Martí i Franquès, 1, 08028 Barcelona, SPAIN, e-mail: tarancon@el.ub.es
T. Norby
Affiliation:
Center for Materials Science, Department of Chemistry, University of Oslo Gaustadalleen, 21, N-0349 Oslo, NORWAY
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Abstract

Transport number measurements and impedance spectroscopy in controlled temperature and atmosphere were used to investigate the electrical properties of La2Mo2O9 sintered samples. These samples were prepared from nanocrystalline La2Mo2O9 powders as obtained from a new soft chemistry route involving the polymerisation of acrylamide. By means of the electromotive force method measurements, the sintered compound was found mainly oxygen conductor in the range of 400 °C-800 °C with oxide-ion transport number greater than 0.99. The effect of the oxygen partial pressure on the electrical conductivity of La2Mo2O9 was investigated by impedance spectroscopy from 1 to 10−22 atm, showing a highly stable conduction properties up to 10−17 atm at 800 °C.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 822: Symposium S – Nanostructured Materials in Alternative Energy Devices , 2004 , S6.5
Copyright
Copyright © Materials Research Society 2004

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