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STRUCTURAL ANALYSIS AND IONIC CONDUCTIVITY AT ROOM TEMPERATURE OF A Ce-DOPED La0.9MnO3-δ PEROVSKITE PREPARED BY THE PECHINI …

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STRUCTURAL ANALYSIS AND IONIC CONDUCTIVITY AT ROOM

TEMPERATURE OF A Ce-DOPED La

0.9

MnO

3-δ

PEROVSKITE

PREPARED BY THE PECHINI …

Authors

Farida Bouremmad, Abderrahim Benabbas, Nedjmeddine Bounar, Kamel Rida, Patrick Ropa, Jean-Claude Carru

Publication date

2009/3

Journal

Functional Materials Letters

Volume 2 Issue 01 Pages 33-36 Publisher

World Scientific Publishing Company

Description

A Ce-doped La0.9MnO3-δ sample was prepared by the Pechini route, consisting of a polymerization of

citric acid and ethylene glycol, in order to prepare a phase with oxygen deficiency that can be used in fuel cell applications. To substitute a part of lanthanum by cerium, we added CeO2 in excess to force it

to react and diffuse in the perovskite. The Fourier Transformed infrared (FTIR) spectrum of the resin at 200°C has shown the formation of complex metals form and polymerized form of ethylene glycol. The X-ray diffraction (XRD) spectrum of the sample, calcined at 900°C, has revealed that the sample is mainly constituted by a deficient rhombohedra perovskite phase. The measurement of the ionic conductivity by complex impedance at room temperature has given a relatively high value, which opens up an opportunity for solid oxide fuel cell applications.

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