The phase relations and crystal structures of La1-xSrxFe1-yTayO3 in the compositional range x = 0-0.60, y = 0-0.20 were investigated by powder X-ray diffraction (XRD). The formal concentration of Fe4+ in the La1-xSrxFe1-yTayO3±w (LSFT) system was calculated and related to the electrical/electrochemical properties. To investigate the electrochemical behaviour as cathode material for SOFCs, impedance measurements were performed on LSFT/electrolyte/LSFT symmetrical cells by using La0.8S0.2Ga0.8Mg0.2O3, (LSGM) as electrolyte material. The lowest area specific resistance (ASR), derived from the polarization resistance (Rp), 1 Ω cm2 at 750 °C, was measured for the LSFT compound doped with x = 0.40 and y = 0.05.

Characterization of tantalum doped lanthanum strontium ferrite as cathode materials for solid oxide fuel cells

NATALI SORA, Isabella;FELICE, Valeria;
2015

Abstract

The phase relations and crystal structures of La1-xSrxFe1-yTayO3 in the compositional range x = 0-0.60, y = 0-0.20 were investigated by powder X-ray diffraction (XRD). The formal concentration of Fe4+ in the La1-xSrxFe1-yTayO3±w (LSFT) system was calculated and related to the electrical/electrochemical properties. To investigate the electrochemical behaviour as cathode material for SOFCs, impedance measurements were performed on LSFT/electrolyte/LSFT symmetrical cells by using La0.8S0.2Ga0.8Mg0.2O3, (LSGM) as electrolyte material. The lowest area specific resistance (ASR), derived from the polarization resistance (Rp), 1 Ω cm2 at 750 °C, was measured for the LSFT compound doped with x = 0.40 and y = 0.05.
journal article - articolo
NATALI SORA, Isabella; Felice, Valeria; Zurlo, Francesca; Licoccia, Silvia; Di Bartolomeo, Elisabetta
File allegato/i alla scheda:
File Dimensione del file Formato  
JAlloysComp_2015.pdf

Solo gestori di archivio

Versione: publisher's version - versione editoriale
Licenza: Licenza default Aisberg
Dimensione del file 1.53 MB
Formato Adobe PDF
1.53 MB Adobe PDF   Visualizza/Apri
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

Aisberg ©2008 Servizi bibliotecari, Università degli studi di Bergamo | Terms of use/Condizioni di utilizzo

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10446/51051
Citazioni
  • Scopus 8
  • ???jsp.display-item.citation.isi??? 7
social impact