Microstructure and electrochemical properties of cathode materials for SOFCs prepared via pulsed laser deposition
Dense La 0.8Sr 0.2MnO 3 (LSM) and La 0.5Sr 0.5CoO 3 (LSC) films were fabricated via pulsed laser deposition (PLD) on different substrates. The crystal structures of the films were characterized via in situ X-ray diffraction and the in-plane electrical properties by impedance spectroscopy from room t...
Gespeichert in:
Veröffentlicht in: | Journal of power sources 2006-10, Vol.161 (1), p.250-255 |
---|---|
Hauptverfasser: | , , , , , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | Dense La
0.8Sr
0.2MnO
3 (LSM) and La
0.5Sr
0.5CoO
3 (LSC) films were fabricated via pulsed laser deposition (PLD) on different substrates. The crystal structures of the films were characterized via in situ X-ray diffraction and the in-plane electrical properties by impedance spectroscopy from room temperature to 700
°C. While the ablated films appeared to grow in the perovskite phase with the appropriate electrical properties when the substrate temperature was greater than 500
°C, they were amorphous when the substrate temperature was relatively low. Subsequent annealing of amorphous LSM and LSC films in air induced a rapid phase transformation to the perovskite phase. On silicon substrates, this phase transformation occurred at 450 and 600
°C, respectively. |
---|---|
ISSN: | 0378-7753 1873-2755 |
DOI: | 10.1016/j.jpowsour.2006.03.060 |