Optimizing solid oxide fuel cell cathode processing route for intermediate temperature operation

Ortiz-Vitoriano, N., Bernuy-Lopez, C., Ruiz de Larramendi, I., Knibbe, R., Thyden, K., Hauch, A., Holtappels, P. and Rojo, T. (2013) Optimizing solid oxide fuel cell cathode processing route for intermediate temperature operation. Applied Energy, 104 984-991. doi:10.1016/j.apenergy.2012.12.003

Author Ortiz-Vitoriano, N.
Bernuy-Lopez, C.
Ruiz de Larramendi, I.
Knibbe, R.
Thyden, K.
Hauch, A.
Holtappels, P.
Rojo, T.
Title Optimizing solid oxide fuel cell cathode processing route for intermediate temperature operation
Journal name Applied Energy   Check publisher's open access policy
ISSN 0306-2619
Publication date 2013-04
Year available 2013
Sub-type Article (original research)
DOI 10.1016/j.apenergy.2012.12.003
Open Access Status Not yet assessed
Volume 104
Start page 984
End page 991
Total pages 8
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon Press
Language eng
Formatted abstract
For Solid Oxide Fuel Cells (SOFCs) to become an economically attractive energy conversion technology suitable materials which allow operation at lower temperatures, while retaining cell performance, must be developed. At the same time, the cell components must be inexpensive - requiring both low-priced raw material and cost-effective production techniques. In this work the perovskite-type La0.6Ca0.4Fe0.8Ni0.2O3 (LCFN) oxide has been used in order to optimize intermediate temperature SOFC cathode processing route. The advantages this material presents arise from the low temperature powder calcination (∼600°C) and electrode sintering (∼800°C) of LCFN electrodes, making them a cheaper alternative to conventional SOFC cathodes. An electrode polarization resistance as low as 0.10Ωcm2 at 800°C is reported, as determined by impedance spectroscopy studies of symmetrical cells sintered at a range of temperatures (800-1000°C). Scanning Electron Microscopy (SEM) studies revealed porous electrode microstructures, even when sintered at a temperature of just 800°C. The competitive performance of the electrodes sintered at low temperatures, combined with the low raw material cost, make these electrodes an excellent potential choice for SOFC cathodes. In this work a new cathode processing technique is presented which provides a more economical, lower temperature SOFC production route with no detrimental effect on device efficiency.
Keyword Cathode
Electrochemical impedance spectroscopy
Solid oxide fuel cell
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Mechanical & Mining Engineering Publications
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Citation counts: TR Web of Science Citation Count  Cited 6 times in Thomson Reuters Web of Science Article | Citations
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