Cathodic polarisation of composite LSCF-SDC IT-SOFC electrode synthesised by one-step microwave self-assisted combustion

Nano-sized composite La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF)-Ce0.8Sm0.2O1.9 (SDC) powder was synthesised by one-step microwave self-assisted combustion synthesis and characterized by X-ray diffraction and transmission electron microscopy. Electrochemical performance of composite LSCF-SDC cathode in contact...

Full description

Saved in:
Bibliographic Details
Published in:Journal of the European Ceramic Society 2019-05, Vol.39 (5), p.1846-1853
Main Authors: Loureiro, Francisco J.A., Macedo, Daniel A., Nascimento, Rubens M., Cesário, Moisés R., Grilo, João P.F., Yaremchenko, Aleksey A., Fagg, Duncan P.
Format: Article
Language:English
Subjects:
Cathodic polarisation
Impedance spectroscopy
LSCF-SDC
One-step microwave self-assisted combustion
SOFC cathode
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Nano-sized composite La0.6Sr0.4Co0.2Fe0.8O3-δ (LSCF)-Ce0.8Sm0.2O1.9 (SDC) powder was synthesised by one-step microwave self-assisted combustion synthesis and characterized by X-ray diffraction and transmission electron microscopy. Electrochemical performance of composite LSCF-SDC cathode in contact with Ce0.8Gd0.2O1.9 (GDC) solid electrolyte under steady state polarisation was studied employing electrochemical impedance spectroscopy in 3-electrode cell configuration. The evolution of elementary steps of oxygen reduction reaction was analysed under cathodic polarisation in potentiostatic mode (up to −0.8 V) in the temperature range 650–750 °C. The composite LSCF-SDC cathode prepared by one-step microwave combustion route demonstrated a lower overall polarisation resistance when compared to literature reports of similar cathodes produced by other synthesis routes.
ISSN:0955-2219
1873-619X
DOI:10.1016/j.jeurceramsoc.2019.01.013