Publikationstyp: Beitrag in wissenschaftlicher Zeitschrift
Art der Begutachtung: Peer review (Publikation)
Titel: On the synthesis and performance of flame-made nanoscale La0.6Sr0.4CoO3−δ and its influence on the application as an intermediate temperature solid oxide fuel cell cathode
Autor/-in: Heel, Andre
Holtappels, Peter
Graule, Thomas
DOI: 10.1016/j.jpowsour.2010.04.006
Erschienen in: Journal of Power Sources
Band(Heft): 195
Heft: 19
Seite(n): 6709
Seiten bis: 6718
Erscheinungsdatum: Okt-2010
Verlag / Hrsg. Institution: Elsevier
ISSN: 0378-7753
1873-2755
Sprache: Englisch
Schlagwörter: La0.6Sr0.4CoO3−δ (LSC); Cathode; Nanoparticle; Flame spray synthesis; Electrolyte interaction; CO2 sensitivity
Fachgebiet (DDC): 621.3: Elektro-, Kommunikations-, Steuerungs- und Regelungstechnik
660: Technische Chemie
Zusammenfassung: Flame spray synthesis (FSS), a large-scale powder processing technique is used to prepare nanoscale La0.6Sr0.4CoO3−δ powder for solid oxide fuel cell cathodes from water-based nitrate solutions. Influence of processing is investigated on basis of the as-synthesised powders by X-ray powder diffraction (XRD), thermal gravimetric analysis (TGA), nitrogen adsorption (BET) and electron microscopy (SEM and TEM). Against the background of a nanostructured cathode morphology for an intermediate temperature solid oxide fuel cell (IT-SOFC) at 600 °C, an optimised and high surface area flame-made La0.6Sr0.4CoO3−δ nanopowder of 29 m2 g−1 is used to investigate its performance and chemical reaction with common electrolytes (Y0.16Zr0.84O2−δ, Ce0.9Gd0.1O2−δ and Sc0.20Ce0.01Zr0.79O2−δ). Secondary phase analysis from XRD measurements revealed a substantially lower La2Zr2O7 and SrZrO3 formation in comparison to conventional spray pyrolysed and submicron powder of about 9 m2 g−1. TGA and resistivity measurements proofed that La0.6Sr0.4CoO3−δ is non-sensitive towards carbonate formation under CO2 containing atmospheres. Electronic bulk conductivity of 2680 S cm−1 (600 °C) and 3340 S cm−1 (500 °C) were measured in air and as function of oxygen partial pressure (2 × 105 Pa > p(O2) > 1.2 × 10−2 Pa) in the temperature range between 400 and 900 °C. Electrochemical performance is determined by impedance spectroscopy on symmetrical cells of screen printed nanoscale La0.6Sr0.4CoO3−δ on Ce0.9Gd0.1O2−δ substrates from which an area specific resistance (ASR) of 0.96 Ω cm2 at 600 °C and 0.14 Ω cm2 at 700 °C were obtained.
URI: https://digitalcollection.zhaw.ch/handle/11475/9268
Volltext Version: Publizierte Version
Lizenz (gemäss Verlagsvertrag): Lizenz gemäss Verlagsvertrag
Departement: School of Engineering
Organisationseinheit: Institute of Materials and Process Engineering (IMPE)
Enthalten in den Sammlungen:Publikationen School of Engineering

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Heel, A., Holtappels, P., & Graule, T. (2010). On the synthesis and performance of flame-made nanoscale La0.6Sr0.4CoO3−δ and its influence on the application as an intermediate temperature solid oxide fuel cell cathode. Journal of Power Sources, 195(19), 6709–6718. https://doi.org/10.1016/j.jpowsour.2010.04.006
Heel, A., Holtappels, P. and Graule, T. (2010) ‘On the synthesis and performance of flame-made nanoscale La0.6Sr0.4CoO3−δ and its influence on the application as an intermediate temperature solid oxide fuel cell cathode’, Journal of Power Sources, 195(19), pp. 6709–6718. Available at: https://doi.org/10.1016/j.jpowsour.2010.04.006.
A. Heel, P. Holtappels, and T. Graule, “On the synthesis and performance of flame-made nanoscale La0.6Sr0.4CoO3−δ and its influence on the application as an intermediate temperature solid oxide fuel cell cathode,” Journal of Power Sources, vol. 195, no. 19, pp. 6709–6718, Oct. 2010, doi: 10.1016/j.jpowsour.2010.04.006.
HEEL, Andre, Peter HOLTAPPELS und Thomas GRAULE, 2010. On the synthesis and performance of flame-made nanoscale La0.6Sr0.4CoO3−δ and its influence on the application as an intermediate temperature solid oxide fuel cell cathode. Journal of Power Sources. Oktober 2010. Bd. 195, Nr. 19, S. 6709–6718. DOI 10.1016/j.jpowsour.2010.04.006
Heel, Andre, Peter Holtappels, and Thomas Graule. 2010. “On the Synthesis and Performance of Flame-Made Nanoscale La0.6Sr0.4CoO3−δ and Its Influence on the Application as an Intermediate Temperature Solid Oxide Fuel Cell Cathode.” Journal of Power Sources 195 (19): 6709–18. https://doi.org/10.1016/j.jpowsour.2010.04.006.
Heel, Andre, et al. “On the Synthesis and Performance of Flame-Made Nanoscale La0.6Sr0.4CoO3−δ and Its Influence on the Application as an Intermediate Temperature Solid Oxide Fuel Cell Cathode.” Journal of Power Sources, vol. 195, no. 19, Oct. 2010, pp. 6709–18, https://doi.org/10.1016/j.jpowsour.2010.04.006.


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