Preparation of SDC Interlayer and Influence on Performances of Anode Supported Solid Oxide Fuel Cells

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A single cell with a two-layer electrolyte consisting of an yttria stabilized zirconia (YSZ, Y2O3 8 mol%) layer and an Sm-doped ceria (SDC, Sm2O3 20mol%) interlayer has been fabricated on porous YSZ-NiO anode support. The layer of YSZ electrolyte was prepared by modified electrostatic powder coating method and the SDC interlayer by screen-printed method on the green YSZ layer. After co-firing at 1400°C for 5 h, the two-layer film with a dense YSZ film of about 15μm and porous SDC film of about 25μm was fabricated. The performances of as-fabricated single cell using La0.8Sr0.2FeO3 as cathode were tested using H2-3% H2O as fuel and air as oxidant at 800°C. Results indicated that the peak power density of a single cell with SDC interlayer reaches 469 mW/cm2 at 800°C, obviously higher than that of without SDC interlayer, which is about 300 mW/cm2 at 800°C.

Info:

Periodical:

Key Engineering Materials (Volumes 336-338)

Edited by:

Wei Pan and Jianghong Gong

Pages:

486-489

DOI:

10.4028/www.scientific.net/KEM.336-338.486

Citation:

W. T. Bao et al., "Preparation of SDC Interlayer and Influence on Performances of Anode Supported Solid Oxide Fuel Cells", Key Engineering Materials, Vols. 336-338, pp. 486-489, 2007

Online since:

April 2007

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$38.00

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