Journal ArticleDOI
Thermal and Electrical Properties of New Cathode Material Ba0.5Sr0.5Co0.8Fe0.2O3 − δ for Solid Oxide Fuel Cells
TLDR
A newly developed cathode material, Ba0.5Sr 0.5Co0.8Fe0.2O3-delta, was synthesized and characterized in this paper.Abstract:
A newly developed cathode material, Ba0.5Sr0.5Co0.8Fe0.2O3-delta, was synthesized and characterized. X-ray diffraction results identified it as a cubic perovskite structure. Thermogravimetric results showed that lattice oxygen loss was about 2% in weight between 50 and 1000 degrees C. Thermal expansion coefficient results in air and argon were extraordinarily high, with slope changes occurring at about 382 and 360 degrees C, respectively. Electrical conductivity values were sufficient for cathode application with the maximum of about 28.1 S cm(-1) at 500 degrees C in air and 17.3 S cm(-1) at 900 degrees C in N-2, correspondingly. Both thermal and electrical properties were closely associated with lattice oxygen behaviors and oxygen partial pressure. (c) 2005 The Electrochemical Society.read more
Citations
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Nanoscale and nano-structured electrodes of solid oxide fuel cells by infiltration: Advances and challenges
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Advances in layered oxide cathodes for intermediate temperature solid oxide fuel cells
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Perovskite oxides applications in high temperature oxygen separation, solid oxide fuel cell and membrane reactor: A review
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Solid oxide fuel cells - a challenge for materials chemists?
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Synthesis, electrical and electrochemical properties of Ba0.5Sr0.5Zn0.2Fe0.8O3−δ perovskite oxide for IT-SOFC cathode
TL;DR: The Ba0.5Sr0.8O3-delta (BSZF) complex oxide with cubic perovskite structure was synthesized and examined as anew cobalt-free cathode for intermediate-temperature solid oxide fuel cells (IT-SOFCs) as mentioned in this paper.
References
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Journal ArticleDOI
Ceramic Fuel Cells
TL;DR: Ceramic fuel cells, commonly referred to as solid-oxide fuel cells (SOFCs), are presently under development for a variety of power generation applications as mentioned in this paper, and the critical issues posed by the development of this type of fuel cell are discussed.
Journal ArticleDOI
A high-performance cathode for the next generation of solid-oxide fuel cells
Zongping Shao,Sossina M. Haile +1 more
TL;DR: BSCF is presented as a new cathode material for reduced-temperature SOFC operation and demonstrated that BSCF is ideally suited to ‘single-chamber’ fuel-cell operation, where anode and cathode reactions take place within the same physical chamber.
Journal ArticleDOI
Appraisal of Ce1−yGdyO2−y/2 electrolytes for IT-SOFC operation at 500°C
TL;DR: In this article, the authors evaluated thermodynamic and electrical conductivity data to select the most appropriate electrolyte composition for IT-SOFC operation at 500°C and found that the Gd 3+ ion is the preferred dopant, compared to Sm 3+ and Y 3+, at this temperature.
Journal ArticleDOI
Advances in solid oxide fuel cell technology
TL;DR: In this paper, the materials and fabrication methods used for different cell components, and discusses the performance of cells fabricated using these materials; it also discusses materials and processing studies that are under investigation to reduce the cell cost.
Journal ArticleDOI
Investigation of the permeation behavior and stability of a Ba0.5Sr0.5Co0.8Fe0.2O3−δ oxygen membrane
TL;DR: In this article, a combined citrate-EDTA complexing method was used for the preparation of SCFO and Ba0.2O3-delta (BSCFO) oxides, and the results of O-2-TPD and XRD showed that the introduction of barium into SCFO could effectively suppress the oxidation of Co3+ and Fe3+ to higher valence states of Co4 and Fe4+ in the lattice and stabilize the perovskite structure under lower oxygen partial pressures.
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