Electrode Properties of Ba_0.5Sr_0.5Co_yFe_1-yO_3-δCathode Materials for Solid Oxide Fuel Cell

Abstract:

The electrode properties of Ba0.5Sr0.5CoyFe1-yO3-δ {BSCF(5/5/10y/10(1-y))} on a Ce0.8Sm0.2O1.9 electrolyte were investigated. BSCF powders were synthesized by a solid-state reaction. The electronic conductivities of BSCFs increased with increasing Co content and BSCF(5/5/8/2) showed the highest conductivity of 38 S cm-1 at 600oC. The electrode resistance was measured on symmetric cells, BSCF/Ce0.8Sm0.2O1.9/BSCF, over the temperature range from 600oC to 800oC. The electrode resistances decreased with increasing Co content and BSCF(5/5/8/2) showed the lowest electrode resistance in the whole temperature range, having an electrode resistance of 0.62
cm2 at 600oC.

• Periodical: Key Engineering Materials (Volume 388)
• Pages: 49-52
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.388.49
• Online since: September 2008
• Authors: Shinya Asagi, Shinya Suzuki, Masaru Miyayama
• Keywords: AC-Impedance Analysis, Ba_0.5Sr_0.5Co_yFe_1-yO_3-δ, Cathode Material, Electrode Resistance, Electronic Conductivity, Solid Oxide Fuel Cell (SOFC)

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