Journal ArticleDOI
A fuel-flexible ceramic-based anode for solid oxide fuel cells
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TLDR
In this paper, a solid oxide fuel cell (SOFC) anode material designed for use with C-containing fuels is presented, which is a composite of an electronically conducting ceramic, La 0.8 Sr 0. 2 Cr 0. 8 Mn 0.2 O 3 - Φ, an ionically conducting ceramic and a small fraction of Ni.Abstract:
Results are presented on a solid oxide fuel cell (SOFC) anode material designed for use with C-containing fuels: a composite of an electronically conducting ceramic, La 0 . 8 Sr 0 . 2 Cr 0 . 8 Mn 0 . 2 O 3 - Φ , an ionically conducting ceramic, Ce 0 . 9 Gd 0 . 1 O 1 . 9 5 (GDC), and a small fraction Ni. These ceramic-based anodes were tested in SOFCs with GDC bulk electrolytes. The anode performance was comparable to that for Ni-GDC anodes with hydrogen and methane fuels. The anodes also provided good performance with propane and butane and, unlike Ni-GDC, there was little or no coking. The 4 wt % Ni content in the anode was necessary to obtain good performance, indicating that a small amount of Ni provides a substantial electrocatalytic effect while not causing coking. Initial cell test results showed good cell stability and indicated that the anodes were not affected by cyclic oxidation and reduction.read more
Citations
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Journal ArticleDOI
Advanced anodes for high-temperature fuel cells
A. Atkinson,Scott A. Barnett,Raymond J. Gorte,John T. S. Irvine,Augustin J. McEvoy,Mogens Bjerg Mogensen,Subhash C. Singhal,John M. Vohs +7 more
TL;DR: Recent developments of SOFC fuel electrodes that will enable the better use of readily available fuels are discussed, particularly the fuel electrode or anode.
Journal ArticleDOI
Progress in material selection for solid oxide fuel cell technology: A review
TL;DR: In this paper, the authors provide a comprehensive review with respect to the structure, chemistry, design and selection of materials, underlying mechanisms, and performance of each SOFC component, and it opens up the future directions towards pursuing SOFC research.
Journal ArticleDOI
A redox-stable efficient anode for solid-oxide fuel cells.
Shanwen Tao,John T. S. Irvine +1 more
TL;DR: Both redox stability and operation in low steam hydrocarbons have been demonstrated, overcoming two of the major limitations of the current generation of nickel zirconia cermet SOFC anodes.
Book ChapterDOI
Direct hydrocarbon solid oxide fuel cells.
Steven McIntosh,Raymond J. Gorte +1 more
TL;DR: The primary issues in direct hydrocarbon anode development are reviewed and the new materials and composites that have been developed to meet this challenge are discussed.
Journal ArticleDOI
Recent Advances in Materials for Fuel Cells
TL;DR: In this paper, material requirements for SOFC and PEMFC stacks, together with an introductory section on materials technology for reformers, are discussed, and it is concluded that the introduction of alternative materials/processes that would enable SOFC stacks to operate at 150-200°C, and IT-SOFC stacks at 500-700°C would have a major impact on the successful commercialization of fuel cell technology.
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
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
Direct oxidation of hydrocarbons in a solid-oxide fuel cell
TL;DR: The observation that a solid-oxide fuel cell can be operated on dry hydrocarbons, including liquid fuels, without reforming, suggests that this type of fuel cell could provide an alternative to hydrogen-based fuel-cell technologies.
Journal ArticleDOI
Solid oxide fuel cells
TL;DR: In this article, the authors discuss the particular issues facing the development of a high temperature solid-state fuel cell and the inorganic materials currently used and under investigation for such cells, together with the problems associated with operating SOFCs on practical hydrocarbon fuels.
Journal ArticleDOI
A direct-methane fuel cell with a ceria-based anode
TL;DR: In this paper, the authors reported the direct electrochemical oxidation of methane in solid oxide fuel cells that generate power densities upto 0.37 W cm−2 at 650°C.