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Intermediate-Temperature Solid Oxide Fuel Cells

Intermediate-Temperature Solid Oxide Fuel Cells
Materials and Applications

by Zongping Shao,Moses O. Tadé

  • Publisher : Springer
  • Release : 2016-09-12
  • Pages : 266
  • ISBN : 366252936X
  • Language : En, Es, Fr & De
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This book discusses recent advances in intermediate-temperature solid oxide fuel cells (IT-SOFCs), focusing on material development and design, mechanism study, reaction kinetics and practical applications. It consists of five chapters presenting different types of reactions and materials employed in electrolytes, cathodes, anodes, interconnects and sealants for IT-SOFCs. It also includes two chapters highlighting new aspects of these solid oxide fuel cells and exploring their practical applications. This insightful and useful book appeals to a wide readership in various fields, including solid oxide fuel cells, electrochemistry, membranes and ceramics. Zongping Shao is a Professor at the State Key Laboratory of Materials-Oriented Chemical Engineering and the College of Energy, Nanjing University of Technology, China. Moses O. Tade is a Professor at the Department of Chemical Engineering, Curtin University, Australia.

Intermediate Temperature Solid Oxide Fuel Cell Development

Intermediate Temperature Solid Oxide Fuel Cell Development
A Book

by Anonim

  • Publisher : Unknown Publisher
  • Release : 2008
  • Pages : 129
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Solid oxide fuel cells (SOFCs) are high efficiency energy conversion devices. Present materials set, using yttria stabilized zirconia (YSZ) electrolyte, limit the cell operating temperatures to 800 C or higher. It has become increasingly evident however that lowering the operating temperature would provide a more expeditious route to commercialization. The advantages of intermediate temperature (600 to 800 C) operation are related to both economic and materials issues. Lower operating temperature allows the use of low cost materials for the balance of plant and limits degradation arising from materials interactions. When the SOFC operating temperature is in the range of 600 to 700 C, it is also possible to partially reform hydrocarbon fuels within the stack providing additional system cost savings by reducing the air preheat heat-exchanger and blower size. The promise of Sr and Mg doped lanthanum gallate (LSGM) electrolyte materials, based on their high ionic conductivity and oxygen transference number at the intermediate temperature is well recognized. The focus of the present project was two-fold: (a) Identify a cell fabrication technique to achieve the benefits of lanthanum gallate material, and (b) Investigate alternative cathode materials that demonstrate low cathode polarization losses at the intermediate temperature. A porous matrix supported, thin film cell configuration was fabricated. The electrode material precursor was infiltrated into the porous matrix and the counter electrode was screen printed. Both anode and cathode infiltration produced high performance cells. Comparison of the two approaches showed that an infiltrated cathode cells may have advantages in high fuel utilization operations. Two new cathode materials were evaluated. Northwestern University investigated LSGM-ceria composite cathode while Caltech evaluated Ba-Sr-Co-Fe (BSCF) based pervoskite cathode. Both cathode materials showed lower polarization losses at temperatures as low as 600 C than conventional manganite or cobaltite cathodes.

Intermediate Temperature Solid Oxide Fuel Cells

Intermediate Temperature Solid Oxide Fuel Cells
Electrolytes, Electrodes and Interconnects

by Gurbinder Kaur

  • Publisher : Elsevier
  • Release : 2019-11-21
  • Pages : 516
  • ISBN : 0128174463
  • Language : En, Es, Fr & De
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Intermediate Temperature Solid Oxide Fuel Cells: Electrolytes, Electrodes and Interconnects introduces the fundamental principles of intermediate solid oxide fuel cells technology. It provides the reader with a broad understanding and practical knowledge of the electrodes, pyrochlore/perovskite/oxide electrolytes and interconnects which form the backbone of the Solid Oxide Fuel Cell (SOFC) unit. Opening with an introduction to the thermodynamics, physiochemical and electrochemical behavior of Solid Oxide Fuel Cells (SOFC), the book also discusses specific materials, including low temperature brownmillerites and aurivillius electrolytes, as well as pyrochlore interconnects. This book analyzes the basic concepts, providing cutting-edge information for both researchers and students. It is a complete reference for Intermediate Solid Oxide Fuel Cells technology that will be a vital resource for those working in materials science, fuel cells and solid state chemistry. Provides a single source of information on glass, electrolytes, interconnects, vanadates, pyrochlores and perovskite SOFC Includes illustrations that provide a clear visual explanation of concepts being discussed Progresses from a discussion of basic concepts that will enable readers to easily comprehend the subject matter

Development of New Materials for Intermediate-temperature Solid Oxide Fuel Cells

Development of New Materials for Intermediate-temperature Solid Oxide Fuel Cells
A Book

by Christophe T. G. Petit

  • Publisher : Unknown Publisher
  • Release : 2013
  • Pages : 362
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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In this thesis, the main focus of the work is the development of novel materials for intermediate-temperature solid oxide fuel cells (IT-SOFCs) with an aim of showing suitability and compatibility with fuel cell system environment. Fuel cell fabrication was briefly encountered to test appropriateness with existing fuel cell element standards (yttrium-doped zirconia as electrolyte for high temperature operation and gadoliniumdoped ceria for IT-SOFCs) but due to the lack of appropriate component, extensive tests to determine full potential were not carried out. Methods such as solid-state reaction and sol-gel process were adopted for the synthesis of the materials and solid-solution limits were determined for the orthovanadate compounds studied. These latter were then reduced to their metavanadate counterpart in order to establish a possible cyclability between the two oxygenated forms that could be exploited in fuel cell mechanisms. Doped version of the former and latter with alkaline-earth elements were found to greatly increase stability and conductive behaviour while maintaining appropriate densification through the formation of closed pores in the orthovanadate structure allowing the metavanadate to benefit from increased conductance. Electrolyte studies were also carried out based on doped barium yttrium cerate/zirconate structures however compounds synthesised exhibited inappropriate properties for use in IT-SOFCs despite some interesting behaviours that would be a benefit in high-temperature electrolysers.

Materials Requirement and Selection for Intermediate Temperature Solid Oxide Fuel Cells (IT-SOFC)

Materials Requirement and Selection for Intermediate Temperature Solid Oxide Fuel Cells (IT-SOFC)
A Book

by Subbarao Satish

  • Publisher : Unknown Publisher
  • Release : 2004
  • Pages : 98
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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New Cathode Materials for Intermediate Temperature Solid Oxide Fuel Cells

New Cathode Materials for Intermediate Temperature Solid Oxide Fuel Cells
A Book

by Anonim

  • Publisher : Unknown Publisher
  • Release : 2005
  • Pages : 129
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Engineering High Performance Intermediate Temperature Solid Oxide Fuel Cells

Engineering High Performance Intermediate Temperature Solid Oxide Fuel Cells
A Book

by Jin Soo Ahn

  • Publisher : Unknown Publisher
  • Release : 2009
  • Pages : 129
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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ABSTRACT: Solid oxide fuel cells (SOFCs) are an efficient, fuel flexible energy conversion device, capable of operating on fuels ranging from natural gas to gasoline, diesel, and biofuels, as well as hydrogen. However, to this point the marketability of SOFCs has been limited by their high operating temperatures. Achieving high power at intermediate temperatures (IT, 500 - 700 °C) would be a significant breakthrough, as low temperature operation would result in better stability and allow for a broader range of material options for the SOFC components as well as the balance of plant, such as stainless steel interconnects (which are only viable at

Development of New Electrolyte Material for Intermediate Temperature

Development of New Electrolyte Material for Intermediate Temperature
Solid Oxide Fuel Cells (IT-SOFCS)

by Muralidharan Ramachandran

  • Publisher : Unknown Publisher
  • Release : 2006
  • Pages : 116
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Intermediate Temperature Solid Oxide Fuel Cells with a Metallic Interconnect

Intermediate Temperature Solid Oxide Fuel Cells with a Metallic Interconnect
Final Report

by Anil V. Virkar

  • Publisher : Unknown Publisher
  • Release : 2002
  • Pages : 34
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Endoscopic ultrasonography

Endoscopic ultrasonography
state of the art 1995

by Anonim

  • Publisher : Unknown Publisher
  • Release : 1995
  • Pages : 129
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Materials and Issues for Intermediate-temperature Solid Oxide Fuel Cells

Materials and Issues for Intermediate-temperature Solid Oxide Fuel Cells
A Book

by N. M. Sammes

  • Publisher : Unknown Publisher
  • Release : 2004
  • Pages : 129
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Design and Characterization of Intermediate Temperature Solid Oxide Fuel Cells with a Honeycomb Structure

Design and Characterization of Intermediate Temperature Solid Oxide Fuel Cells with a Honeycomb Structure
Operation, Research, and Opportunities

by Sean Dakota Stout

  • Publisher : Unknown Publisher
  • Release : 2015
  • Pages : 58
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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The aim of this thesis is to propose the design process and considerations to be employed in the fabrication of a high-volumetric-power-density intermediate temperature solid oxide fuel cell (IT-SOFC), as well as the necessary characterization and analysis techniques for such a device. A novel hexagonal honeycomb design will be proposed with functionally graded electrodes and an alternative electrolyte – a previously unexplored configuration based on attained research. The potential use of CFD software to investigate mass and heat transport properties of an SOFC having such a design shall be discussed, as well as the utility of experimental methods such as the generation of a polarization curve and the use of SEM to characterize electrochemical performance and microstructure, respectively. Fabrication methods shall also be evaluated, and it will be shown that the proposed design is not only feasible but meets the goal of designing an SOFC with a power density of 2 W/cm3 operating at or below 650 C.

New Materials for Intermediate-temperature Solid Oxide Fuel Cells to be Powered by Carbon- and Sulfur-containing Fuels

New Materials for Intermediate-temperature Solid Oxide Fuel Cells to be Powered by Carbon- and Sulfur-containing Fuels
A Book

by Lei Yang

  • Publisher : Unknown Publisher
  • Release : 2011
  • Pages : 129
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Unlike polymer electrolyte fuel cells, solid-oxide fuel cells (SOFCs) have the potential to use a wide variety of fuels, including hydrocarbons and gasified coal or different types of ample carbonaceous solids. However, the conventional anode for an SOFC, a composite consisting of nickel and yttria-stabilized-zirconia (YSZ), is highly susceptible to carbon buildup (coking) and deactivation (poisoning) by contaminants commonly encountered in readily available fuels. Further, the low ionic conductivity of the electrolyte and the poor performance of the cathode at lower temperatures require SOFCs to operate at high temperatures (>800©3¡2â2́Ơš©30́(©2°C), thereby increasing costs and reduce system operation life. Thus, in order to make SOFCs fully fuel-flexible, cost-effective power systems, the issues of anode tolerance to coking and sulfur poisoning as well as the slow ionic conduction in the electrolyte and the sluggish kinetics at the cathode need to be addressed. In this thesis, a novel electrolyte was shown to have the highest ionic conductivity below 750©3¡2â2́Ơš©30́(©2°C of all known electrolyte materials for SOFCs applications, which allowed for fabrication of a thin-electrolyte cell with high power output at lower temperatures. The detailed electrochemical analyses of BZCYYb conductor revealed that the conductivities were sensitive to doping and partial pressure of oxygen, hydrogen, and water. When used in combination with Ni as a composite anode (Ni-BZCYYb), it was shown to provide excellent tolerance to coking and sulfur poisoning. Extensive investigations on surfaces of BZCYYb and Ni by Raman Spectroscopy and Scanning Auger Nanoprobe disclosed that its unique ability appears linked to the mixed conductor's enhanced catalytic activity for sulfur oxidation and hydrocarbon cracking/reforming, as well as enhanced multilayer water adsorption capability. In addition, the nanostructured oxide layers on Ni from dispersion of BZCYYb traces during high-temperature calcinations may effectively suppress the formation of carbon from dehydrogenation. Based on the fundamental understanding on surface properties, a new and simple modification strategy was developed to hinder the carbon-induced deactivation of the state-of-the-art Ni-YSZ anode. Compared to the complex Ni-BZCYYb anode, this modified Ni-YSZ anode could be readily adopted in the latest fuel cell systems based on YSZ electrolyte. The much-improved power output and tolerance to coking of the modified Ni-YSZ anode were attributed to the nanostructured BaO/Ni interfaces observed by synchrotron-based X-ray and advanced electron microscopy, which readily adsorbed water and facilitated water-mediated carbon removal reactions. Density functional theory (DFT) calculations predicted that the dissociated OH from H©3¡2©2℗Ø©3℗Øâ0́(℗Ơ©5¡©3℗Øâ0́(℗Ơ©5¡O on BaO reacted with C on Ni near the BaO/Ni interface to produce CO and H species, which were then electrochemically oxidized at the triple-phase boundaries of the anode. Also, some new insights into the sulfur poisoning behavior of the Ni-YSZ anode have been revealed. The so-called "second-stage poisoning" commonly reported in the literatures can be avoided by using a new sealant, indicating that this poisoning is unlikely the inherent electrochemical behavior of a Ni-YSZ anode but associated with other complications. Furthermore, a new composite cathode with simultaneous transport of proton, oxygen vacancies and electronic defects was developed for low-temperature SOFCs based on oxide proton conductors. Compared to the conventional oxygen ion-electron conducting cathode, this cathode is very active for oxygen reduction, extending the electrochemically active sites and significantly reducing the cathodic polarization resistance. Towards the end, these findings have great potential to dramatically improve the economical competitiveness and commercial viability of SOFCs that are driven by cost-effective and renewable fuels.

A Study of Perovskite Electrolytes and Electrodes for Intermediate-temperature Solid Oxide Fuel Cell Applications

A Study of Perovskite Electrolytes and Electrodes for Intermediate-temperature Solid Oxide Fuel Cell Applications
A Book

by Weitung Wang

  • Publisher : Unknown Publisher
  • Release : 1996
  • Pages : 368
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Solid Oxide Fuel Cells

Solid Oxide Fuel Cells
(SOFC VI) : Proceedings of the Sixth International Symposium

by S. C. Singhal,M. Dokiya

  • Publisher : The Electrochemical Society
  • Release : 1999
  • Pages : 1200
  • ISBN : 9781566772426
  • Language : En, Es, Fr & De
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Evaluation and Scale-up of Intermediate Temperature (700degC) Solid Oxide Fuel Cell Technology

Evaluation and Scale-up of Intermediate Temperature (700degC) Solid Oxide Fuel Cell Technology
A Book

by J. Cotton,CERAM Research (Firm),Harwell Laboratory. Energy Technology Support Unit. Fuel Cells Programme,Energy Technology Support Unit (Great Britain),Great Britain. Department of Trade and Industry

  • Publisher : Unknown Publisher
  • Release : 1999
  • Pages : 25
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Solid Oxide Fuel Cells

Solid Oxide Fuel Cells
From Electrolyte-Based to Electrolyte-Free Devices

by Bin Zhu,Rizwan Raza,Liangdong Fan,Chunwen Sun

  • Publisher : John Wiley & Sons
  • Release : 2020-02-12
  • Pages : 488
  • ISBN : 3527812784
  • Language : En, Es, Fr & De
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Presents innovative approaches towards affordable, highly efficient, and reliable sustainable energy systems Written by leading experts on the subject, this book provides not only a basic introduction and understanding of conventional fuel cell principle, but also an updated view of the most recent developments in this field. It focuses on the new energy conversion technologies based on both electrolyte and electrolyte-free fuel cells?from advanced novel ceria-based composite electrolyte low temperature solid oxide fuel cells to non-electrolyte fuel cells as advanced fuel-to-electricity conversion technology. Solid Oxide Fuel Cells: From Electrolyte-Based to Electrolyte-Free Devices is divided into three parts. Part I covers the latest developments of anode, electrolyte, and cathode materials as well as the SOFC technologies. Part II discusses the non-electrolyte or semiconductor-based membrane fuel cells. Part III focuses on engineering efforts on materials, technology, devices and stack developments, and looks at various applications and new opportunities of SOFC using both the electrolyte and non-electrolyte principles, including integrated fuel cell systems with electrolysis, solar energy, and more. -Offers knowledge on how to realize highly efficient fuel cells with novel device structures -Shows the opportunity to transform the future fuel cell markets and the possibility to commercialize fuel cells in an extended range of applications -Presents a unique collection of contributions on the development of solid oxide fuel cells from electrolyte based to non-electrolyte-based technology -Provides a more comprehensive understanding of the advances in fuel cells and bridges the knowledge from traditional SOFC to the new concept -Allows readers to track the development from the conventional SOFC to the non-electrolyte or single-component fuel cell Solid Oxide Fuel Cells: From Electrolyte-Based to Electrolyte-Free Devices will serve as an important reference work to students, scientists, engineers, researchers, and technology developers in the fuel cell field.

Isolation of A-Site Ordered Perovskites for Potential Application as Solid Oxide Fuel Cell Cathodes

Isolation of A-Site Ordered Perovskites for Potential Application as Solid Oxide Fuel Cell Cathodes
A Book

by Darren Hodgeman

  • Publisher : Unknown Publisher
  • Release : 2014
  • Pages : 129
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Composite cathodes for intermediate temperature solid oxide fuel cells

Composite cathodes for intermediate temperature solid oxide fuel cells
A Book

by Gopiraj Sivasundram

  • Publisher : Unknown Publisher
  • Release : 2006
  • Pages : 129
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Interconnects for Intermediate Temperature Solid Oxide Fuel Cells

Interconnects for Intermediate Temperature Solid Oxide Fuel Cells
A Book

by Wenhua Huang

  • Publisher : Unknown Publisher
  • Release : 2008
  • Pages : 292
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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