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Showing 1 to 13 of 13 for “"Solid oxide fuel cells (SOFC)"”.
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Phase formation and structural transformation of strontium ferrite SrFeOx
Non-stoichiometric strontium iron oxide is described by an abbreviated formula SrFeOx (2.5 ≤ x ≤ 3.0) exhibits a variety of interesting physical and chemical properties over a broad range of temperatures and in different gaseous environments. The oxide contains a mixture of iron in the trivalent …
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Phase formation and structural transformation of strontium ferrite SrFeOx
Non-stoichiometric strontium iron oxide is described by an abbreviated formula SrFeOx (2.5 ≤ x ≤ 3.0) exhibits a variety of interesting physical and chemical properties over a broad range of temperatures and in different gaseous environments. The oxide contains a mixture of iron in the trivalent …
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Thermodynamic analysis of ammonia and urea fed solid oxide fuel cells
… analyses of ion and proton-conducting solid oxide fuel cells (SOFC) fed with ammonia and urea as fuels. A multi-level approach was used to determine the feasibility and the performance of the fuel cells. First, the cell-level thermodynamics were examined to capture the effect of various …
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CERAMIC MATERIALS USED IN SOLID-OXIDE FUEL CELLS
Solid-oxide fuel cells (SOFC) are electrochemical conversion devices to convert electricity directly from oxidizing a fuel with high efficiency and low emission. . The triple-phase-boundaries (TPBs), where cathode and electrolyte make contact with gas phase, are considered to be the active sites …
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Computational and empirical thermal modelling of a proposed SOFC stack housing design
Solid oxide fuel cells (SOFC) generate electricity cleanly, efficiently and quietly. There has been much effort in commercialising planar and large tubular SOFCs in the past two decades. Some research has involved modelling the mass, thermal and electrical energy flows in SOFC stack designs. Due to …
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Fundamental studies of heterostructured oxide thin film electrocatalysts for oxygen reduction at high temperatures
… electrochemical energy technologies. Perovskite oxides are active for surface oxygen exchange at evaluated temperatures and they are used commonly in solid oxide fuel cells (SOFC) or electrolyzers. However, the oxide surface chemistry at high temperatures and near ambient oxygen pressure is …
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Glass-ceramics for solid oxide fuel cell seals
… of glass and glass-ceramic sealants for solid oxide fuel cells (SOFC), including the critical issues for sealant design. Section two describes a quantitative approach to characterize the isothermal crystallization of glass using differential thermal analysis (DTA)<strong>, </strong>with …
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Evaluation of Cathode Materials for Low Temperature (500-700C) Solid Oxide Fuel Cells
<p><a></a>Solid oxide fuel cells (SOFC) have gained a great deal of interest, due to their potential for high efficiency power generation and ability to utilize hydrogen fuel, as well as various hydrocarbon-based fuels. A recent trend in SOFC development has been towards lower operating …
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Distributed computing & solid oxide fuel cell modelling
Solid oxide fuel cells (SOFC) are a power generation technology that offers the potential to revolutionize the energy industry. Lower emissions and higher energy efficiencies than conventional thermal generation but, moreover, the ability to deliver these improvements in small generators, enables …
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Understanding and Controlling the Surface Chemistry of Oxides to Enhance Catalytic Activity at Elevated Temperatures
Oxides have been extensively used as high temperature catalysts in electrochemical devices and for gas conversion reactions, including solid oxide fuel cells (SOFC), solid oxide electrolysis cells (SOEC), ethane cracking, CO oxidation, and the oxidative coupling of methane. In hightemperature …
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Fabrication and characterization of micro-tubular solid oxide fuel cells
Solid oxide fuel cells (SOFC) are an energy efficient, low pollution technology for generating power and have the potential to revolutionize energy generation. Tubular and planar concepts are the most common SOFC systems. The primary objective of this study was to develop a cost-effective process …
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Thermoeconomic Modeling and Parametric Study of Hybrid Solid Oxide Fuel Cell – Gas Turbine – Steam Turbine Power Plants Ranging from 1.5 MWe to 10 MWe
… and operational analysis of hybrid solid oxide fuel cell (SOFC) – gas turbine (GT) – steam turbine (ST) systems ranging in size from 1.5 MWe to 10 MWe. The fuel cell model used in this thesis is based on a tubular Siemens-Westinghouse-type SOFC, which is integrated with a gas turbine …
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Διεπιφανειακές ιδιότητες συστημάτων κεραμικών οξειδίων (δομικών και λειτουργικών) σε επαφή με ρευστές φάσεις
… των κελιών καυσίμου στερεού ηλεκτρολύτη (SOFC) ως μονωτικά ή στεγανωτικά υλικά. Ιδιαίτερο ενδιαφέρον παρουσιάζει η αλληλεπίδραση τους στην διεπιφάνεια σε επαφή με άργυρο και κράματα με βάση τον άργυρο για χρήση ως εναλλακτικών, σε αντικατάσταση των υαλοκεραμικών, συγκολλητικών μεταξύ των …