Buvat, G., Quarez, E. & Joubert, O. (2017) Influence of La2Mo2O9 on the sintering behavior and electrochemical properties of gadolinium-doped ceria. Ceramics International, 43 10137–10143.
Added by: Richard Baschera (2017-10-24 13:30:33) Last edited by: Richard Baschera (2017-10-24 13:56:10) |
Type de référence: Article DOI: 10.1016/j.ceramint.2017.05.036 Numéro d'identification (ISBN etc.): 0272-8842 Clé BibTeX: Buvat2017 Voir tous les détails bibliographiques |
Catégories: ST2E Créateurs: Buvat, Joubert, Quarez Collection: Ceramics International |
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Résumé |
Gadolinium-doped ceria (known as CGO or GDC) is a good oxide-ion conductor which presents potential application for solid-state electrochemical devices. However, one of the main drawbacks of this material is the high sintering temperature required to obtain dense ceramic. In this paper, we report a new way to reduce densification temperature of CGO by adding x weight percent of La2Mo2O9 material (0 {<}= x {<}= 10). This latter is also a good oxide-ion conductor at high temperature ({>} 580 degrees C) which allows the preservation of the electrochemical properties of CGO as shown by impedance spectroscopy. The sintering behavior is then studied using dilatometric measurements and mechanism of densification is discussed.
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