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

Wei Tao Bao; Jian Feng Gao; Guang Yao Meng

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

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 336-338Preparation of SDC Interlayer and Influence on...

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

Abstract:

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.

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Periodical:

Key Engineering Materials (Volumes 336-338)

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486-489

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https://doi.org/10.4028/www.scientific.net/KEM.336-338.486

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April 2007

Authors:

Wei Tao Bao, Jian Feng Gao, Guang Yao Meng

Keywords:

Dense Electrolyte Film, SDC Interlayer, Solid Oxide Fuel Cell (SOFC), YSZ

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