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000811773 1001_ $$0P:(DE-HGF)0$$aGerstl, Matthias$$b0$$eCorresponding author
000811773 245__ $$aThe Sulphur Poisoning Behaviour of Gadolinia Doped Ceria Model Systems in Reducing Atmospheres
000811773 260__ $$aBasel$$bMDPI$$c2016
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000811773 520__ $$aAn array of analytical methods including surface area determination by gas adsorption using the Brunauer, Emmett, Teller (BET) method, combustion analysis, XRD, ToF-SIMS, TEM and impedance spectroscopy has been used to investigate the interaction of gadolinia doped ceria (GDC) with hydrogen sulphide containing reducing atmospheres. It is shown that sulphur is incorporated into the GDC bulk and might lead to phase changes. Additionally, high concentrations of silicon are found on the surface of model composite microelectrodes. Based on these data, a model is proposed to explain the multi-facetted electrochemical degradation behaviour encountered during long term electrochemical measurements. While electrochemical bulk properties of GDC stay largely unaffected, the surface polarisation resistance is dramatically changed, due to silicon segregation and reaction with adsorbed sulphur.
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000811773 7001_ $$0P:(DE-HGF)0$$aNenning, Andreas$$b1
000811773 7001_ $$0P:(DE-HGF)0$$aIskandar, Riza$$b2
000811773 7001_ $$0P:(DE-HGF)0$$aRojek-Wöckner, Veronika$$b3
000811773 7001_ $$0P:(DE-Juel1)129591$$aBram, Martin$$b4
000811773 7001_ $$0P:(DE-HGF)0$$aHutter, Herbert$$b5
000811773 7001_ $$0P:(DE-HGF)0$$aOpitz, Alexander Karl$$b6
000811773 773__ $$0PERI:(DE-600)2487261-1$$a10.3390/ma9080649$$n8$$p649$$tMaterials$$v9$$x1996-1944$$y2016
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