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...

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Veröffentlicht in:Journal of power sources 2006-10, Vol.161 (1), p.250-255
Hauptverfasser: Koep, Erik, Jin, Chunming, Haluska, Michael, Das, Rupak, Narayan, Roger, Sandhage, Ken, Snyder, Robert, Liu, Meilin
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container_end_page 255
container_issue 1
container_start_page 250
container_title Journal of power sources
container_volume 161
creator Koep, Erik
Jin, Chunming
Haluska, Michael
Das, Rupak
Narayan, Roger
Sandhage, Ken
Snyder, Robert
Liu, Meilin
description 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.
doi_str_mv 10.1016/j.jpowsour.2006.03.060
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subjects Applied sciences
Cathode
Energy
Energy. Thermal use of fuels
Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc
Exact sciences and technology
Fuel cell
Fuel cells
Lanthanum manganate
LSC
LSM
SOFC
title Microstructure and electrochemical properties of cathode materials for SOFCs prepared via pulsed laser deposition
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