Structural and electrochemical properties of nanostructured Pd-promoted La(1-x)SRXFEYCO(1-Y)O3-δ cathodes for it-sofcs

F. Puleo, L.F. Liotta, A. Longo, V. La Parola, A. Martorana, D. Banerjee, E. Simonetti, S. McPhail, C. Paoletti

Research output: Contribution to conferencePaper

Abstract

Nanostructured La1-xSrxCo1-yFeyO3-δ perovskites and Ce0.8Gd0.2O2-δ fluorite powders were successfully prepared by citrate sol-gel method starting from nitrates of the metal cations. Calcined powders were characterized by XRD and Rietveld refinement, EXAFS and XPS analyses. Electrochemical impedance spectroscopy (EIS) measurements on symmetric cells were performed to evaluate the use of La1-xSrxCo1-yFeyO3-δ as a cathode material for intermediate temperature solid oxide fuel cells based on gadolinium doped-ceria electrolytes. Moreover, to improve the performance of LSCF, the effect of Pd doping was investigated. Our results demonstrate that LSCF with 20% mol Fe content (LSCF0.2) has lower ohmic resistance (Rohmic) compared to LSCF with Fe 80% mol (LSCF0.8). In addition, Pd doping decreased both, ohmic (Rohmic) as well as polarization (Rp), resistances for LSCF samples. The best characteristics as cathode at intermediate operating temperatures were found for LSCF0.2-Pd at 690 °C with area specific resistance of 0.07 Ω cm2.
Original languageEnglish
Publication statusPublished - 2013
Event5th European Fuel Cell Piero Lunghi Conference and Exhibition, EFC 2013 - Rome, Italy
Duration: 1 Jan 2013 → …

Conference

Conference5th European Fuel Cell Piero Lunghi Conference and Exhibition, EFC 2013
CountryItaly
CityRome
Period1/1/13 → …

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All Science Journal Classification (ASJC) codes

  • Fuel Technology

Cite this

Puleo, F., Liotta, L. F., Longo, A., La Parola, V., Martorana, A., Banerjee, D., ... Paoletti, C. (2013). Structural and electrochemical properties of nanostructured Pd-promoted La(1-x)SRXFEYCO(1-Y)O3-δ cathodes for it-sofcs. Paper presented at 5th European Fuel Cell Piero Lunghi Conference and Exhibition, EFC 2013, Rome, Italy.