NDLI: Oxygen exchange kinetics of the potential solid oxide fuel cell cathode material (Bi,Sr)(Co,Fe)O3-delta

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Oxygen exchange kinetics of the potential solid oxide fuel cell cathode material (Bi,Sr)(Co,Fe)O3-delta

Content Provider	Semantic Scholar
Author	Wedig, Anja
Copyright Year	2013
Abstract	In this thesis, the oxygen exchange kinetics of Bi-based perovskites was investigated. The investigations were conducted on morphologically well-defined thin-film model electrodes by means of electrochemical impedance spectroscopy. Alongside, a range of other methods was applied to further characterize the structural and transport properties which possibly influence the oxygen exchange performance. In particular, electrochemical polarization experiments were carried out to examine the relationship between ionic conductivity and oxygen exchange rate. Thus, it was aimed to gain a deeper understanding of the mechanistic principles governing the oxygen exchange reaction on mixed-conducting perovskite-type oxides. In dieser Arbeit wurde die Sauerstoffaustauschkinetik Bi-basierter Perowskite untersucht. Die Untersuchungen wurden mittels elektrochemischer Impedanzspektroskopie an morphologisch wohldefinierten Dunnfilm-Modellelektroden durchgefuhrt. Daneben wurde eine Reihe anderer Methoden angewandt, um die strukturellen und Transporteigenschaften weiter zu charakterisieren, die moglicherweise die Sauerstoffaustauschleistung beeinflussen. Insbesondere wurden elektrochemische Polarisationsexperimente durchgefuhrt, um den Zusammenhang zwischen ionischer Leitfahigkeit und Sauerstoffaustauschrate zu untersuchen. Damit wurde darauf abgezielt, ein tieferes Verstandnis der mechanistischen Prinzipien zu erlangen, die die Sauerstoffaustauschreaktion auf gemischtleitenden Oxiden vom Perowskit-Typ bestimmen.
File Format	PDF HTM / HTML
DOI	10.18419/opus-6831
Alternate Webpage(s)	https://elib.uni-stuttgart.de/bitstream/11682/6848/1/Doktorarbeit_AW.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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