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000055694 084__ $$2WoS$$aElectrochemistry
000055694 084__ $$2WoS$$aMaterials Science, Coatings & Films
000055694 1001_ $$0P:(DE-Juel1)VDB55636$$aSerra, J. M.$$b0$$uFZJ
000055694 245__ $$aThin BaCe0.8Gd0.2O3-delta Protonic Electrolytes on porous Ce08Gd0.2O1.9-Ni Substrates
000055694 260__ $$aPennington, NJ$$bElectrochemical Society$$c2007
000055694 300__ $$aB334 - B340
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000055694 520__ $$aThin proton-conducting electrolytes with 20 mu m thickness and a nominal composition BaCe0.8Gd0.2O3-delta were prepared over porous substrates composed of Ce0.8Gd0.2O1.9 (CGO)-Ni. The fabrication method includes the simultaneous cofiring and solid-state reaction at 1300 degrees C of three screen-printed layers: mixed conducting anode layer, CGO, and an upper-coated BaCO3 layer. The resulting asymmetric membranes with 5 X 5 cm(2) geometry are gastight. The solid-state reaction resulted in the formation of (i) an electrolyte with large (similar to 2-5 mu m) grains and high packing density and (ii) anode layer comprising finely grained BaCe0.8Gd0.2O3-delta and Ni particles with a thickness around 5 mu m. The layer morphology, phase distribution, and lattice composition has been investigated by X-ray diffraction, energy-dispersive spectroscopy scanning electron microscopy, and secondary-ion mass spectrometry. The preparation of the substrate by warm-pressing and tailoring of the porosity and sintering activity are also thoroughly described. DC-electrical conductivity and ac-electrochemical characterization showed that the supported Gd-doped barium cerate electrolyte produced by solid-state reaction has interesting proton-conduction properties for application in solid oxide fuel cells, hydrogen separation, and sensors. (c) 2007 The Electrochemical Society.
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000055694 7001_ $$0P:(DE-Juel1)VDB50856$$aBüchler, O.$$b1$$uFZJ
000055694 7001_ $$0P:(DE-Juel1)129637$$aMeulenberg, W. A.$$b2$$uFZJ
000055694 7001_ $$0P:(DE-Juel1)129594$$aBuchkremer, H. P.$$b3$$uFZJ
000055694 773__ $$0PERI:(DE-600)2002179-3$$a10.1149/1.2422901$$gVol. 154, p. B334 - B340$$pB334 - B340$$q154<B334 - B340$$tJournal of the Electrochemical Society$$v154$$x0013-4651$$y2007
000055694 8567_ $$uhttp://dx.doi.org/10.1149/1.2422901
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