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Showing 1 to 20 of 93 for “"Solid oxide fuel cells"”.
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Modeling of solid oxide fuel cells
… membrane-electrode assembly (MEA) model of Solid Oxide Fuel Cell (SOFC)s is developed to investigate the effect of various design and operating conditions on the cell performance and to examine the underlying mechanisms that govern their performance. We review and compare the current …
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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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Ceramic-Based Anodes for Solid Oxide Fuel Cells
<p> Solid oxide fuel cells (SOFCs) are considered one of the most promising technologies for future energy conversion, and can operate on a wide range of fuels including fossil-based hydrocarbon fuels such as petroleum, diesel and natural gas as well as bio-derived hydrocarbons. The primary …
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Infiltrated composite electrodes for solid oxide fuel cells
"Solid oxide fuel cells (SOFCs) are electrochemical devices which can convert chemical energy to electrical energy with efficiencies up to 60%. In order for SOFCs to be favorable energy conversion devices, the power obtained from a unit volume should be improved. This corresponds to minimized …
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Oxygenated hydrocarbon fuels for solid oxide fuel cells
… climate change and reduce dependence on fossil fuels, carbon-neutral methods of electricity generation are required. Solid oxide fuel cells (SOFCs) have the potential to operate at high efficiencies, while liquid hydrocarbon fuels require little or no new infrastructure and can be manufactured …
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Planar copper containing anode-supported solid oxide fuel cells
… anode supported Intermediate Temperature Solid Oxide Fuel Cells (IT-SOFCs) were produced by single step cosintering. The anode and the electrolyte were realized through water-based tape casting, the cathode being added by screen printing. A 5 mol% of Lithium oxide addition allowed reducing …
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Single-Chamber solid oxide fuel cells: modelling and experiments
… tubular) under single-chamber (mixed-reactant) solid oxide fuel cell (SC-SOFC) conditions. In this respect, these designs have been computer analyzed and it is found that the micro-tubular design eliminates the possibility of cross diffusion/convection from the counter electrode, which is an …
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Cycling studies of micro-tubular solid oxide fuel cells
A major problem of solid oxide fuel cells (SOFCs) is their long term durability under cyclic operation, for example during start-up and shutdown, where cracking can occur. The objective of this project is to understand these mechanisms of cyclic degradation for micro-tubular SOFC, then to set-up …
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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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A Portable Generator Incorporating Mini-Tubular Solid Oxide Fuel Cells
… is a small, portable, generator based on fuel cell technology, specifically mini-tubular solid oxide fuel cells (MT-SOFC). MT-SOFCs have been developed since the 1990s but there is limited analysis, discussion or research on developing and constructing a portable generator based on MT-SOFC …
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Production and Characterization of Micro-Tubular Solid Oxide Fuel Cells
In the present work, micro-tubular solid oxide fuel cells μt-SOFCs) constituted by NiO/YSZ anode with an embedded current collector, YSZ as electrolyte, YSZ/LSM as functional cathode layer and pure LSM as cathode current collector layer were fabricated by dip-coating technique. The fuel cell was …
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Dynamic, physically based, models of tubular, solid-oxide fuel cells
Includes bibliographical references (pages 125-127).
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Electrochemical performance testing of micro-tubular solid oxide fuel cells
Includes bibliographical references (pages 117-120).
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Mathematical modeling of solid oxide fuel cells using hydrocarbon fuels
Solid oxide fuel cells (SOFCs) are high efficiency conversion devices that use hydrogen or light hydrocarbon (HC) fuels in stationary applications to produce quiet and clean power. While successful, HC-fueled SOFCs face several challenges, the most significant being performance degradation due to …
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Mechanical Properties and Electrochemical Durability of Solid Oxide Fuel Cells
… of unaged and aged constituent materials for solid oxide fuel cells were evaluated using microindentation, plate tensile, four-point bend, ball on ring and pressure on ring tests. The Vickers hardness of the anode, interconnect and electrolyte was determined before and after 1000 hours aging …
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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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Utilisation of biomass-derived gaseous fuels using solid-oxide fuel cells
Solid oxide fuel cells (SOFCs) are highly efficient electrochemical energy conversion devices that can potentially reduce greenhouse gas emissions and revolutionize our energy infrastructures. This research investigates and demonstrates novel and highly efficient methods of utilising renewable …
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Shape Memory Alloy / Glass Composite Seal for Solid Oxide Fuel Cells
Widespread use of solid oxide fuel cells is hindered by a lack of long-term durability of seals between metallic and ceramic components caused by thermal expansion mismatch induced cracking. A novel gas seal design incorporating an engineered thermal expansion gradient in a SrO-La₂O₃-A₂O₃-B₂O₃-SiO₂ …
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Tailoring Perovskite- and Fluorite-Type Oxides for Solid Oxide Fuel Cells (SOFCs)
A solid oxide fuel cell (SOFC) is a high temperature solid state energy conversion device that directly converts the chemical energy of fuels into electrical energy at high efficiency. The objective of thesis is to develop and tune fluorite- and perovskite-type metal oxides that serve as alternate …
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