Download or read book SOFC Modelling and Parameter Identification by Means of Impedance Spectroscopy written by André Leonide and published by KIT Scientific Publishing. This book was released on 2010 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: A high resolution electrochemical impedance spectroscopy study on anode supported single cells (ASC) is presented. The cells were characterised over a broad range of operating conditions, including different temperatures, current densities and various cathode and anode gas compositions.The analysis of the distribution of relaxation times combined with the numeric accuracy of a CNLS fit enabled the identification of five different processes contributing to the total polarisation loss of an ASC.
Download or read book SOFC Modelling and Parameter Identification by Means of Impedance Spectroscopy written by André Leonide and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A high resolution electrochemical impedance spectroscopy study on anode supported single cells (ASC) is presented. The cells were characterised over a broad range of operating conditions, including different temperatures, current densities and various cathode and anode gas compositions.The analysis of the distribution of relaxation times combined with the numeric accuracy of a CNLS fit enabled the identification of five different processes contributing to the total polarisation loss of an ASC.
Download or read book Impedance in Electrochemistry From Analytical Applications to Mechanistic Speculation 2 written by P. Vanýsek and published by The Electrochemical Society. This book was released on 2009-10 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt: Impedance spectroscopy, as a method, is becoming a fixture of the instrumental arsenal. However, due to its complexity, the interpretation of impedance results is far from commonplace. The aim of this symposium was to provide forum for new approaches and uses (the Analytical Speculations part) as well as for rigorous attempt at the interpretation, going all the way to the fundamental mechanistic cause and effect.
Download or read book The Electrochemical Oxidation of H2 and CO at Patterned Ni Anodes of SOFCs written by Annika Utz and published by KIT Scientific Publishing. This book was released on 2014-08-22 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this work, a deeper understanding of the electrochemical oxidation at SOFC anodes was gained by the experimental characterization of patterned Ni anodes in H2-H2O and CO-CO2 atmosphere. By high resolution data analysis, the Line Specific Resistance attributed to charge transfer and its dependencies on gas composition, temperature and polarization voltage were identified. Furthermore, the comparison of the performance of patterned and cermet anodes was enabled using a transmission line model.
Download or read book Microstructural Characterisation Modelling and Simulation of Solid Oxide Fuel Cell Cathodes written by Joos, Jochen and published by KIT Scientific Publishing. This book was released on 2017-06-29 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work deals with microstructural characterisation, modelling and simulation of SOFC electrodes with the goal of optimizing the electrode microstructures. Methods for a detailed electrode analysis based on focused ion beam (FIB) tomography are presented. A 3D FEM model able to perform simulations of LSCF cathodes based on 3D tomography data is shown. A model generating realistic, yet synthetic microstructures is presented that enables the optimization of microstructural characteristics.
Download or read book Physically based Impedance Modelling of Lithium Ion Cells written by Illig, Joerg and published by KIT Scientific Publishing. This book was released on 2014-09-19 with total page 231 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, a new procedure to analyze lithium-ion cells is introduced. The cells are disassembled to analyze their components in experimental cell housings. Then, Electrochemical Impedance Spectroscopy, time domain measurements and the Distribution function of Relaxation Times are applied to obtain a deep understanding of the relevant loss processes. This procedure yields a notable surplus of information about the electrode contributions to the overall internal resistance of the cell.
Download or read book Finite Element Method FEM Model and Performance Analysis of Solid Oxide Fuel Cells written by Geisler, Helge Ingolf and published by KIT Scientific Publishing. This book was released on 2019-07-10 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work presents a numerical FEM framework, capable of predicting SOFC performance under technically relevant, planar stack contacting conditions. A high level of confidence in the model predictions is supplied by using exclusively experimentally determined material/kinetic parameters and by a comprehensive validation. The presented model aids SOFC stack development by pre-evaluating possible material choices and design combinations for cells/interconnectors without any experimental effort.
Download or read book Advances in Medium and High Temperature Solid Oxide Fuel Cell Technology written by Marta Boaro and published by Springer. This book was released on 2016-11-24 with total page 347 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book well-known experts highlight cutting-edge research priorities and discuss the state of the art in the field of solid oxide fuel cells giving an update on specific subjects such as protonic conductors, interconnects, electrocatalytic and catalytic processes and modelling approaches.Fundamentals and advances in this field are illustrated to help young researchers address issues in the characterization of materials and in the analysis of processes, not often tackled in scholarly books.
Download or read book Characterization and Modeling of Electrochemical Energy Conversion Systems by Impedance Techniques written by Dino Klotz and published by KIT Scientific Publishing. This book was released on 2014-07-30 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis introduces (i) amendments to basic electrochemical measurement techniques in the time and frequency domain suitable for electrochemical energy conversion systems like fuel cells and batteries, which enable shorter measurement times and improved precision in both measurement and parameter identification, and (ii) a modeling approach that is able to simulate a technically relevant system just by information gained through static and impedance measurements of laboratory size cells.
Download or read book Model based Interpretation of the Performance and Degradation of Reformate Fueled Solid Oxide Fuel Cells written by Alexander Kromp and published by KIT Scientific Publishing. This book was released on 2014-05-12 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solid oxide fuel cells offer great prospects for the sustainable, clean and safe conversion of various fuels into electrical energy. In this thesis, the performance-determining loss processes for the cell operation on reformate fuels are elucidated via electrochemical impedance spectroscopy. Model-based analyses reveal the electrochemical fuel oxidation mechanism, the coupling of fuel gas transport and reforming chemistry and the impact of fuel impurities on the degradation of each loss process.
Download or read book Gas Transport in Solid Oxide Fuel Cells written by Weidong He and published by Springer. This book was released on 2014-09-03 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive overview of contemporary research and emerging measurement technologies associated with gas transport in solid oxide fuel cells. Within these pages, an introduction to the concept of gas diffusion in solid oxide fuel cells is presented. This book also discusses the history and underlying fundamental mechanisms of gas diffusion in solid oxide fuel cells, general theoretical mathematical models for gas diffusion, and traditional and advanced techniques for gas diffusivity measurement.
Download or read book Electrochemical Performance and Stability of Ba Sr Co Fe O for Oxygen Transport Membranes written by Niedrig, Christian and published by KIT Scientific Publishing. This book was released on 2015-12-23 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mixed ionic-electronic conducting (MIEC) ceramics as oxygen transport membranes (OTMs) can provide high oxygen permeation rates at comparably low energy demands. For this purpose, Ba?.?Sr?.?Co?.?Fe?.?O??? (BSCF) shows the best performance under ideal operating conditions. Thermal and chemical stability investigations, electrical behavior ?(T,pO?,t), and oxygen exchange parameter extraction by means of electrical conductivity relaxation resulted in a far better understanding of the BSCF system.
Download or read book Impedance Spectroscopy written by Evgenij Barsoukov and published by John Wiley & Sons. This book was released on 2018-03-19 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Essential Reference for the Field, Featuring Protocols, Analysis, Fundamentals, and the Latest Advances Impedance Spectroscopy: Theory, Experiment, and Applications provides a comprehensive reference for graduate students, researchers, and engineers working in electrochemistry, physical chemistry, and physics. Covering both fundamentals concepts and practical applications, this unique reference provides a level of understanding that allows immediate use of impedance spectroscopy methods. Step-by-step experiment protocols with analysis guidance lend immediate relevance to general principles, while extensive figures and equations aid in the understanding of complex concepts. Detailed discussion includes the best measurement methods and identifying sources of error, and theoretical considerations for modeling, equivalent circuits, and equations in the complex domain are provided for most subjects under investigation. Written by a team of expert contributors, this book provides a clear understanding of impedance spectroscopy in general as well as the essential skills needed to use it in specific applications. Extensively updated to reflect the field’s latest advances, this new Third Edition: Incorporates the latest research, and provides coverage of new areas in which impedance spectroscopy is gaining importance Discusses the application of impedance spectroscopy to viscoelastic rubbery materials and biological systems Explores impedance spectroscopy applications in electrochemistry, semiconductors, solid electrolytes, corrosion, solid state devices, and electrochemical power sources Examines both the theoretical and practical aspects, and discusses when impedance spectroscopy is and is not the appropriate solution to an analysis problem Researchers and engineers will find value in the immediate practicality, while students will appreciate the hands-on approach to impedance spectroscopy methods. Retaining the reputation it has gained over years as a primary reference, Impedance Spectroscopy: Theory, Experiment, and Applications once again present a comprehensive reference reflecting the current state of the field.
Download or read book Electrochemical Impedance Spectroscopy Modelling and Interpretation written by and published by . This book was released on 2013 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electrochemical Impedance Spectroscopy written by Mark E. Orazem and published by John Wiley & Sons. This book was released on 2011-10-13 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using electrochemical impedance spectroscopy in a broad range of applications This book provides the background and training suitable for application of impedance spectroscopy to varied applications, such as corrosion, biomedical devices, semiconductors and solid-state devices, sensors, batteries, fuel cells, electrochemical capacitors, dielectric measurements, coatings, electrochromic materials, analytical chemistry, and imaging. The emphasis is on generally applicable fundamentals rather than on detailed treatment of applications. With numerous illustrative examples showing how these principles are applied to common impedance problems, Electrochemical Impedance Spectroscopy is ideal either for course study or for independent self-study, covering: Essential background, including complex variables, differential equations, statistics, electrical circuits, electrochemistry, and instrumentation Experimental techniques, including methods used to measure impedance and other transfer functions Process models, demonstrating how deterministic models of impedance response can be developed from physical and kinetic descriptions Interpretation strategies, describing methods of interpretating of impedance data, ranging from graphical methods to complex nonlinear regression Error structure, providing a conceptual understanding of stochastic, bias, and fitting errors in frequency-domain measurements An overview that provides a philosophy for electrochemical impedance spectroscopy that integrates experimental observation, model development, and error analysis This is an excellent textbook for graduate students in electrochemistry, materials science, and chemical engineering. It's also a great self-study guide and reference for scientists and engineers who work with electrochemistry, corrosion, and electrochemical technology, including those in the biomedical field, and for users and vendors of impedance-measuring instrumentation.
Download or read book Electrochemical Impedance Spectroscopy and its Applications written by Andrzej Lasia and published by Springer. This book was released on 2014-06-17 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a complete overview of the powerful but often misused technique of Electrochemical Impedance Spectroscopy (EIS). The book presents a systematic and complete overview of EIS. The book carefully describes EIS and its application in studies of electrocatalytic reactions and other electrochemical processes of practical interest. This book is directed towards graduate students and researchers in Electrochemistry. Concepts are illustrated through detailed graphics and numerous examples. The book also includes practice problems. Additional materials and solutions are available online.
Download or read book Electrochemical Impedance Spectroscopy in PEM Fuel Cells written by Xiao-Zi (Riny) Yuan and published by Springer Science & Business Media. This book was released on 2009-11-25 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Electrochemical Impedance Spectroscopy in PEM Fuel Cells" discusses one of the most powerful and useful diagnostic tools for various aspects of the study of fuel cells: electrochemical impedance spectroscopy (EIS). This comprehensive reference on EIS fundamentals and applications in fuel cells contains information about basic principles, measurements, and fuel cell applications of the EIS technique. Many illustrated examples are provided to ensure maximum clarity and observability of the spectra. "Electrochemical Impedance Spectroscopy in PEM Fuel Cells" will enable readers to explore the frontiers of EIS technology in PEM fuel cell research and other electrochemical systems. As well as being a useful text for electrochemists, it can also help researchers who are unfamiliar with EIS to learn the technique quickly and to use it correctly in their fuel cell research. Managers or entrepreneurs may also find this book a useful guide to accessing the challenges and opportunities in fuel cell technology.
