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Noirault, S., Quarez, E., Piffard, Y. & Joubert, O. (2009) Water incorporation into the Ba-2(In1-xMx)(2)O-5 (M = Sc3+ 0 <= x < 0.5 and M = Y3+ 0 <= x < 0.35) system and protonic conduction. Solid State Ion. 180 1157–1163. 
Added by: Laurent Cournède (2016-03-10 21:41:23)
Type de référence: Article
DOI: 10.1016/j.ssi.2009.06.010
Numéro d'identification (ISBN etc.): 0167-2738
Clé BibTeX: Noirault2009
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Catégories: ST2E
Mots-clés: (ba0.3sr0.2la0.5)ino2.75 electrolyte, ba2in2o5, ba2in2o5-rectangle, oxide fuel-cell, Oxohydroxo brownmillerite-type compounds, Oxygen, proton conductivity, Thermal behavior
Créateurs: Joubert, Noirault, Piffard, Quarez
Collection: Solid State Ion.
Consultations : 12/725
Indice de consultation : 2%
Indice de popularité : 0.5%
Résumé     
Ba-2(In1 - xMx)(2)O5-y/2(OH)(y)square(1) (-) (y/2) (y {<}= 2; M = Sc3+ 0 {<}= x {<} 0.5 and M = Y3+ 0 {<}= x {<} 0.35) Compounds were prepared by reacting Ba-2(In1 - xMx)(2)O-5 Phases with water vapor. This reaction is reversible. Analyses of the hydration process by TG and XRD studies show that the thermal stability of hydrated phases increases when x increases and that the incorporation of water is not a single-phase reaction inducing either a crystal system or space group modification. Fully hydrated (y = 2) and dehydrated (y = 0) samples have been stabilized at room temperature and characterized for all compositions. In wet air, all phases show a proton contribution to the total conductivity at temperatures between 350 and 600 (C degrees). At a given temperature, proton conductivity increases with the substitution ratio and reaches at 350 degrees C, 5.4 10(-3) S cm(-1) for Ba-2(In0.65Sc0.35)(2)O-4.2 square(0.2)(OH)(1.6). (C) 2009 Elsevier B.V. All rights reserved.
Added by: Laurent Cournède  
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