CHEMICAL COMPATIBILITY OF PROTON CONDUCTING ELECTROLYTE WITH POTENTIAL OXIDE CATHODES

The chemical and physical compatibility of the conducting electrolyte material LaNbO4 with the partner materials LaMO3 (M = Mn, Fe, Co) and was investigated via the reaction of fine-grained and solid-state diffusion couples. Results showed chemical compatibility for LaNbO4 with perovskite compositio...

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Bibliographic Details
Published inJournal of the European Ceramic Society Vol. 29; no. 13; pp. 2823 - 2830
Main Authors Tolchard, J R, Lein, H L, Grande, T
Format Journal Article
LanguageEnglish
Published 01.10.2009
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Summary:The chemical and physical compatibility of the conducting electrolyte material LaNbO4 with the partner materials LaMO3 (M = Mn, Fe, Co) and was investigated via the reaction of fine-grained and solid-state diffusion couples. Results showed chemical compatibility for LaNbO4 with perovskite compositions, particularly the LaFeO3 and LaMnO3 In contrast, Ruddlesden-Popper type phases are to be poor candidates for use with LaNbO4. of the La2O3-NiO-Nb2O5 and La2O3-CoO-Nb2O5 phase found two new perovskite-related materials of LaNb1/3M2/3O3 (M = Ni, Co), and indicates of LaNbO4 with the binary oxides NiO and CoO. reduction of a LaNbO4-NiO composite confirmed the of LaNbO4 with Ni, and so it is concluded that type electrochemical cells may be manufactured a direct co-firing route without the formation of phases at inter-phase boundaries.
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ISSN:0955-2219