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Showing 1 to 20 of 53 for “"SOFCs"”.
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Exploring Electrochemical Properties of Ti-Containing Oxides as Anodes for SOFCs
… anodes, which deteriorate the performance of SOFCs and affect the worldwide market acceptance. The objective of this thesis is to explore the electrochemical properties of Ti-based hollandite-type and perovskite-type oxides as alternative anode for SOFCs. Hollandite-type Ba1.33Ga2.67Ti5.33O16, …
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Tailoring Perovskite- and Fluorite-Type Oxides for Solid Oxide Fuel Cells (SOFCs)
… and cathodes for intermediate temperature SOFCs. Here, the chemical reactivity between a fluorite-based Ce0.7RE0.2Mo0.1O2 (RE = Y, Sm) anode and 8 mol% yttria-stabilized zirconia electrolyte was evaluated at 1000 ºC. The electrical conductivity of the reaction product Ce1-x-y-zRExZrYMozO2 …
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Architectures for individual and stacked micro single chamber solid oxide fuel cells
Solid oxide fuel cells (SOFCs) are electrochemical conversion devices that convert various fuel sources directly into electrical energy at temperatures ranging from 600°C to 1000°C. These high temperatures could potentially allow the direct use of various hydrocarbon fuel sources and hydrogen, …
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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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A Portable Generator Incorporating Mini-Tubular Solid Oxide Fuel Cells
… 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 technology. Such a generator, running on a portable gas supply, requires combining …
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Aging Effects of the Cathode and Determination of Single Electrode Performance in a Solid Oxide Fuel Cell
Solid oxide fuel cells (SOFCs) are promising electrochemical energy conversion devices due to their advantages of high theoretical efficiency, fuel flexibility (including hydrogen and carbon monoxide), scalability, and low emission. An important problem for commercially using the SOFCs is to …
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Fabrication and Characterization of Freeze Tape Cast Anode Supported Solid Oxide Fuel Cells
… fossil fuels. Solid oxide fuel cells (SOFCs) have been at the forefront of this technology and are considered one of the promising technologies in this area. SOFCs ability to operate on hydrogen or hydrocarbon fuels makes them highly attractive. The current work devoted to the SOFC …
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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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Stability of double perovskite cathodes under high humidity for solid oxide fuel cells
Solid Oxide Fuel Cells (SOFCs) can directly convert a wide variety of fuels to electricity efficiently. They can also be run in reverse as Solid Oxide Electrolysis Cells (SOECs) to produce hydrogen (and carbon-containing fuels) from electrolysis of water (and carbon dioxide). However, the kinetics …
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Planar copper containing anode-supported solid oxide fuel cells
… 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 the Gadolinia-Doped Ceria …
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Scalable Processing Routes for Solid-State Energy Conversion and Storage Devices
… batteries (ASSBs) and solid oxide fuel cells (SOFCs) and is a major determinate for their performance and the economic value in electrochemical storage and conversion applications. The optimization of the SE in ASSBs and SOFCs along with the entire electrochemical cell is mired with challenges …
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Characterisation of anode supported microtubular SOFC process on pure methane reduction and operation
… on pure methane were studied. A major problem of SOFCs is nickel anode performance on methane and higher hydrocarbons. The aim of this work was to study the effect of reduction and operation of anode-supported microtubular SOFCs using methane as both reductant and fuel. The results were compared …
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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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Νέα υλικά ανόδου κελιών καυσίμου στερεού ηλεκτρολύτη (sofc) - παρασκευή, χαρακτηρισμός και έλεγχος ιδιοτήτων
… των κελιών καυσίμου στερεού ηλεκτρολύτη, SOFCs (Solid Oxide Fuel Cells). Ένα από τα μειονεκτήματα που εμφανίζονται κατά την μακρόχρονη λειτουργία ενός ‘state of the art’ κελιού καυσίμου αποτελούμενο από Ni/8YSZ (8 mol% Y2O3 stabilized ZrO2) κεραμομεταλλικό (άνοδος) - 8YSZ (ηλεκτρολύτης) - …
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Thermomechanical properties and performance of microfabricated solid oxide fuel cell ([mu]SOFC) structures
… thermomechanically stable microfabricated SOFCs (SOFCs) at high operation temperature. YSZ films of 70-600nm thickness were deposited at either room temperature or high temperature (500/600°C) on substrates of either silicon, or silicon nitride. The residual film stresses varied from -700 …
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Printable zirconia membranes for high power density micro solid oxide fuel cells
… types of fuel cells, solid oxide fuel cells (SOFCs) have emerged as one of the most promising types, because of their fuel flexibility and there efficiency. The problem with SOFCs, however is the fact that they typically operate at the very high temperature range of 600-1000°C. This greatly …
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Thermodynamic stability of perovskite and lanthanum nickelate-type cathode materials for solid oxide fuel cells
… gas emissions. Solid oxide fuel cells (SOFCs) are one of the most efficient options if the goal is to reduce emissions while still operating on fossil energy resources. One of the foremost problems in SOFCs that causes efficiency loss is the polarization resistance associated with the …
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Oxygenated hydrocarbon fuels for solid oxide fuel cells
… 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 sustainably. Using hydrocarbons in SOFCs introduces the problem of carbon deposition, which can …
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Mechanical Properties and Electrochemical Durability of Solid Oxide Fuel Cells
… thin film fracture strength testing. Half cell SOFCs with composite cathode (Pr0.7Sr0.3)MnO3±Î´ /8YSZ on the 8YSZ electrolyte were aged 1000 hours at 1000 oC in air with/without polarization and investigated using Electrochemical Impedance Spectroscopy (EIS), Scanning Electron Microscopy (SEM), …
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Investigating carbon-capturing getter anode design using a fast computational tool
Solid Oxide Fuel Cells (SOFCs) are a promising technology in the power-generation sector because of their ability to use either hydrocarbons or pure hydrogen. However, introducing hydrocarbons to SOFCs has the negative effect of poisoning the anode of the SOFC with carbon molecules. These carbon …
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