Paper Title:
Processing of Ce1-xGdxO2-δ (GDC) Thin Films from Precursors for Application in Solid Oxide Fuel Cells

Extensive interfacial reactions are known to occur between Fe-Co based perovskite cathode materials and the standard solid oxide fuel cell (SOFC) yttria stabilized zirconia (YSZ) electrolyte. Thin films of gadolinia doped ceria (GDC) could be used as a diffusion barrier between the cathode and the electrolyte. The present work investigates spin coating thin diffusion reaction inhibiting films onto SOFC electrolytes. The chemical and structural evolution of ethylene glycol based precursor solution is studied by means of rheology, x-ray diffraction (XRD), high temperature XRD (HT-XRD), Fourier-transformed infrared spectroscopy (FTIR) and differential thermal analysis (DTA). The studies show that cerium formate is formed as an intermediate resin. Thin films, up to 500 nm thick, of gadolinia doped ceria (GDC) are successfully produced by multiple spin coating of polymerized ethylene glycol derived solutions on 200 1m thick YSZ tapes. The GDC and YSZ interfacial surface morphology and film thickness are studied by scanning electron microscopy (SEM) and atomic force microscopy (AFM). These films are shown to successfully prevent the creation of non-conducting reaction phases at the cathode-electrolyte interface by blocking interdiffusion.

Advanced Materials Research (Volumes 15-17)
Edited by
T. Chandra, K. Tsuzaki, M. Militzer and C. Ravindran
L. Rose, M. Menon, K. Kammer, O. Kesler, P. H. Larsen, "Processing of Ce1-xGdxO2-δ (GDC) Thin Films from Precursors for Application in Solid Oxide Fuel Cells", Advanced Materials Research, Vols. 15-17, pp. 293-298, Feb. 2006
Online since
February 2006
US$ 32,-
Authors: Christos Argirusis, Tanja Damjanović, Günter Borchardt
Abstract:Solid oxide fuel cells with an electrode supported thin film electrolyte are a promising alternative to electrolyte supported single cells...
Authors: Chang Sheng Ding, Hong Fei Lin, Kazuhisa Sato, Yoshifumi Tsutai, Mabito Iguchi, Toshiyuki Hashida
Abstract:Dense gadolinium doped ceria (GDC) electrolyte thin films were prepared on porous NiO-GDC substrates by spray coating process. Microstructure...
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Authors: Wen Cheng J. Wei
Abstract:Ionic/electronic performance of various cathodes in contact with solid electrolytes used for intermediate-temperature (500-750°C) solid oxide...
Authors: Jesús Mauricio González Martínez, Rodrigo Arabey Muñoz Meneses, Cosme Roberto Moreira da Silva
Chapter 2: Powder Synthesis
Abstract:The synthesis by polymeric precursors method (Pechini) was used to acquire gadolinium doped ceria forming...