The phase relations and crystal structures of La1xSrxFe1yTayO3 in the compositional range x ¼ 0e0.60, y ¼ 0e0.20 were investigated by powder X-ray diffraction (XRD). The formal concentration of Fe4þ in the La1xSrxFe1yTayO3±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 La0.8Sr0.2Ga0.8Mg0.2O3, (LSGM) as electrolyte material. The lowest area specific resistance (ASR), derived from the polarization resistance (Rp), 1 U cm2 at 750 C, was measured for the LSFT compound doped with x ¼ 0.40 and y ¼ 0.05.
Natali Sora, I., Felice, V., Zurlo, F., Licoccia, S., DI BARTOLOMEO, E. (2015). Characterization of tantalum doped lanthanum strontium ferrite as cathode materials for solid oxide fuel cells. JOURNAL OF ALLOYS AND COMPOUNDS, 648, 154-159 [10.1016/j.jallcom.2015.06.005].
Characterization of tantalum doped lanthanum strontium ferrite as cathode materials for solid oxide fuel cells
LICOCCIA, SILVIA;DI BARTOLOMEO, ELISABETTA
2015-06-01
Abstract
The phase relations and crystal structures of La1xSrxFe1yTayO3 in the compositional range x ¼ 0e0.60, y ¼ 0e0.20 were investigated by powder X-ray diffraction (XRD). The formal concentration of Fe4þ in the La1xSrxFe1yTayO3±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 La0.8Sr0.2Ga0.8Mg0.2O3, (LSGM) as electrolyte material. The lowest area specific resistance (ASR), derived from the polarization resistance (Rp), 1 U cm2 at 750 C, was measured for the LSFT compound doped with x ¼ 0.40 and y ¼ 0.05.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
