Journal article
Conductivity and electrochemical characterization of PrFe1-xNixO3-δ at high temperature
Risø National Laboratory for Sustainable Energy, Technical University of Denmark1
Electrochemistry, Fuel Cells and Solid State Chemistry Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark2
Fuel Cells and Solid State Chemistry Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark3
Electroceramics, Fuel Cells and Solid State Chemistry Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark4
PrFe(1-x)NixO(3)- (x=0.4-0.6) compounds were synthesized and characterized by powder XRD, electrical conductivity and electrochemical impedance spectroscopy on point electrodes on a Ce0.9Gd0.1O2-delta (CGO10) electrolyte. As a reference, the electrochemical performance of LaFe(0.4)AM(0.6)O(3-delta) was also measured.
The main phase in the PrFe1-xNixO3-delta series was perovskite-type structure and belonged to the orthorhombic crystal system. The conductivities are fairly high, e.g. around 220 S cm(-1) at 873 K for the x = 0.4 compound. The electrochemical performance of the PrFe(1-x)NixO(3-delta) series is similar to that of La0.6Sr0.4Fe0.8Co0.2O3-delta, which is a good candidate as a cathode material for SOFCs operating at intermediate temperature.
The electrochemical performance of LaFe0.4Ni0.6O3-delta was even higher than that of the PrFe1-xNixO3-delta, series and the polarization resistance was 0.14 Omega cm(2) at 1073 K measured on a point electrode. (c) 2006 Elsevier B.V. All rights reserved.
| Language: | English |
|---|---|
| Year: | 2007 |
| Pages: | 256-261 |
| ISSN: | 18734669 and 09258388 |
| Types: | Journal article |
| DOI: | 10.1016/j.jallcom.2006.02.068 |
| ORCIDs: | Kammer Hansen, Kent and Mogensen, Mogens Bjerg |
