Catalytic Activities and Electrochemical Properties of Y and Fe Co-Doped SrTiO 3 -Based Composite Anodes for Solid Oxide Fuel Cells (SOFCs)

In this study, Fine Y and Fe co-doped SrTiO3 powers were synthesized via solid state reaction and pechini method. Perovskite-based anodes were proposed to enhance the anode performance. Doping with Y for Sr allows the Y0.08Sr0.92FexTi1-xO3-δ perovskite to be stable at 800°C in a reducing atmosphere....

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Bibliographic Details
Main Authors: Yoon, Song Seol, Kim, Young Han, Hwang, Haejin, Ji, Mi Jung, Choi, Byung Hyun
Format: Conference Proceeding
Language:English
Online Access:Get full text
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Summary:In this study, Fine Y and Fe co-doped SrTiO3 powers were synthesized via solid state reaction and pechini method. Perovskite-based anodes were proposed to enhance the anode performance. Doping with Y for Sr allows the Y0.08Sr0.92FexTi1-xO3-δ perovskite to be stable at 800°C in a reducing atmosphere. Sintering the oxde anode at 1200°C is found to be optimum to obtain not only good interfacial adhesion, but also a fine grain structure. The Y0.08Sr0.92Fe0.25Ti0.75O3-δ anode, which is sintered at 1200°C, showed the lowest polarization resistance. Electrochemical properties and catalytic activity for CH4 oxidation of the composite anode were investigated by gas chromatography and ac-impedance spectroscopy.
ISSN:1938-5862
1938-6737
DOI:10.1149/1.3570145