Alternative perovskite materials as a cathode component for intermediate temperature single-chamber solid oxide fuel cell
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This paper exploits the suitability of three perovskite materials Ba0.5Sr0.5Co0.8Fe0.2O3- d (BSCF), GdBaCo2O5+d (GBC) and Ba0.5Sr0.5Mn0.7Fe0.3O3- d (BSMF) as SOFC cathodes in the single-chamber configuration operating at the intermediate temperature range. TG analysis showed high thermal stability depending on the crystalline phases of the materials. The catalytic activity of these three materials for hydrocarbon conversion was investigated under a realistic feed, i.e. with hydrocarbon, oxygen, water and carbon dioxide. Electrochemical impedance spectroscopy of the various cathodes tested in symmetric cell configuration revealed a B-site dependence of the electrode catalytic activity for oxygen reduction. High temperature (1000 °C) powder reactivity tests over a gadolinium doped-ceria (CGO) and perovskite cathode revealed excellent chemical compatibility of BSMF and CGO. Catalytic tests associated with thermal and structural characterization attest to the suitability of these materials in the single-chamber configuration. © 2010 Elsevier B.V. All rights reserved.
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Progress in understanding and development of Ba0.5Sr0.5Co0.8Fe0.2O3−δ-based cathodes for intermediate-temperature solid-oxide fuel cells: A reviewZhou, W.; Ran, R.; Shao, Zongping (2009)Solid-oxide fuel cells (SOFCs) convert chemical energy directly into electric power in a highly efficient way. Lowering the operating temperature of SOFCs to around 500-800 °C is one of the main goals in current SOFC ...
Shao, Zongping; Haile, S. (2010)© 2011 Nature Publishing Group, a division of Macmillan Publishers Limited and published by World Scientific Publishing Co. under licence. All rights reserved.Fuel cells directly and efficiently convert chemical energy ...
Evaluation of A-site cation-deficient (Ba0.5Sr0.5)1-xCo0.8Fe0.2O3-d (x > 0) perovskite as a solid-oxide fuel cell cathodeZhou, W.; Ran, R.; Shao, Zongping; Jin, W.; Xu, N. (2008)A-site cation-deficient (Ba0.5Sr0.5)1-xCo0.8Fe0.2O3-d ((BS)1-xCF) oxides were synthesized and evaluated as cathode materials for intermediate-temperature solid-oxide fuel cells (ITSOFCs). The material's thermal expansion ...