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Fabrication and Characterization of Graded Anodes for Anode-Supported Solid Oxide Fuel Cells by Tape Casting and Lamination

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Abstract

Graded anodes for anode-supported solid oxide fuel cells (SOFCs) are fabricated by tape casting and subsequent cold lamination of plates using different compositions. Rheological parameters are adjusted to obtain stable suspensions for tape casting. The conditions for the tape casting and lamination will be described. Flexural strength of the reduced cermets measured using three-point bending configuration is 468 ± 37 MPa. The graded anode supports are characterized by scanning electron microscope observations, mercury porosimetry intrusion, and resistivity measurements, showing an adequate and homogeneous distribution of nickel, zirconia, and pores. The laminated samples showed a total porosity of 18.7 % (in vol%) and a bimodal pore size distribution centered in 20 and 150 nm, and the measured electrical resistivity of this sample was 120 ± 12 μΩ cm. The novelty of the present work is the lamination of tapes at room temperature without using plasticizers. This is made by the combination of two different binders with varying Tg (glass transition temperature) which resulted in plastic deformation at room temperature. Those results indicate that the proposed process is a cost-effective method to fabricate anode-supported SOFCs.

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Acknowledgments

The authors would like to thank MICINN and Feder Program of the European Community for the financial support (MAT2012-30763 project) and also grant GA-LC-035/2012 financed by the Aragón Government and La Caixa Foundation. The use of Servicio de Microscopia Electronica (University of Zaragoza) is finally acknowledged.

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Author notes

  1. J. Gurauskis

    Present address: Department of Energy Conversion and Storage, Technical University of Denmark, Frederiksborgvej 399, 4000, Roskilde, Denmark

Authors and Affiliations

  1. Instituto de Ciencia de Materiales de Aragón (ICMA), CSIC—Universidad de Zaragoza, C/Pedro Cerbuna 12, 50009, Zaragoza, Spain

    J. F. Beltran-Lopez, M. A. Laguna-Bercero, J. Gurauskis & J. I. Peña

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  1. J. F. Beltran-Lopez
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  2. M. A. Laguna-Bercero
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  3. J. Gurauskis
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Correspondence to M. A. Laguna-Bercero.

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Beltran-Lopez, J.F., Laguna-Bercero, M.A., Gurauskis, J. et al. Fabrication and Characterization of Graded Anodes for Anode-Supported Solid Oxide Fuel Cells by Tape Casting and Lamination. Electrocatalysis 5, 273–278 (2014). https://doi.org/10.1007/s12678-014-0193-2

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  • DOI: https://doi.org/10.1007/s12678-014-0193-2

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