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Finite Element Method Fem Model And Performance Analysis Of Solid Oxide Fuel Cells
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Author : Geisler, Helge Ingolf
language : en
Publisher: KIT Scientific Publishing
Release Date : 2019-07-10
Finite Element Method Fem Model And Performance Analysis Of Solid Oxide Fuel Cells written by Geisler, Helge Ingolf and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-07-10 with Technology & Engineering categories.
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.
Characterization And Modeling Of Electrochemical Energy Conversion Systems By Impedance Techniques
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Author : Dino Klotz
language : en
Publisher: KIT Scientific Publishing
Release Date : 2014-07-30
Characterization And Modeling Of Electrochemical Energy Conversion Systems By Impedance Techniques written by Dino Klotz and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-07-30 with Technology & Engineering categories.
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.
The Electrochemical Oxidation Of H2 And Co At Patterned Ni Anodes Of Sofcs
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Author : Annika Utz
language : en
Publisher: KIT Scientific Publishing
Release Date : 2014-08-22
The Electrochemical Oxidation Of H2 And Co At Patterned Ni Anodes Of Sofcs written by Annika Utz and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-08-22 with Technology & Engineering categories.
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.
Physically Based Impedance Modelling Of Lithium Ion Cells
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Author : Illig, Joerg
language : en
Publisher: KIT Scientific Publishing
Release Date : 2014-09-19
Physically Based Impedance Modelling Of Lithium Ion Cells written by Illig, Joerg and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-09-19 with Technology & Engineering categories.
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.
Microstructural Characterisation Modelling And Simulation Of Solid Oxide Fuel Cell Cathodes
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Author : Joos, Jochen
language : en
Publisher: KIT Scientific Publishing
Release Date : 2017-06-29
Microstructural Characterisation Modelling And Simulation Of Solid Oxide Fuel Cell Cathodes written by Joos, Jochen and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-06-29 with categories.
Electrochemical Performance And Stability Of Ba Sr Co Fe O For Oxygen Transport Membranes
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Author : Niedrig, Christian
language : en
Publisher: KIT Scientific Publishing
Release Date : 2015-12-23
Electrochemical Performance And Stability Of Ba Sr Co Fe O For Oxygen Transport Membranes written by Niedrig, Christian and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-12-23 with Technology (General) categories.
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.
Sofc Modelling And Parameter Identification By Means Of Impedance Spectroscopy
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Author : André Leonide
language : en
Publisher: KIT Scientific Publishing
Release Date : 2010
Sofc Modelling And Parameter Identification By Means Of Impedance Spectroscopy written by André Leonide and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Technology (General) categories.
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.
Model Based Interpretation Of The Performance And Degradation Of Reformate Fueled Solid Oxide Fuel Cells
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Author : Alexander Kromp
language : en
Publisher: KIT Scientific Publishing
Release Date : 2014-05-12
Model Based Interpretation Of The Performance And Degradation Of Reformate Fueled Solid Oxide Fuel Cells written by Alexander Kromp and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-05-12 with Technology & Engineering categories.
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.
Tiffee
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Author : Nicole Gollan-Gesierich
language : de
Publisher: BoD – Books on Demand
Release Date : 2020-11-20
Tiffee written by Nicole Gollan-Gesierich and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-11-20 with Fiction categories.
Tiffee ist eine kleine Fee, die Menschen auf ihrem Weg zu mehr Selbstliebe, Freude und Leichtigkeit begleitet. Mit kleinen Geschichten, bestehend aus Illustrationen und Textimpulsen erzählt dir Tiffee, was in ihrem Leben wichtig ist. Eine kleine Geschichte, die Mut macht, der eigenen Stimme zu folgen und mutig seinen eigenen Weg zu gehen.
Grain Size Effects In Nanoscaled Electrolyte And Cathode Thin Films For Solid Oxide Fuel Cells Sofc
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Author : Christoph Peters
language : en
Publisher: KIT Scientific Publishing
Release Date : 2009
Grain Size Effects In Nanoscaled Electrolyte And Cathode Thin Films For Solid Oxide Fuel Cells Sofc written by Christoph Peters and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Technology (General) categories.
Due to their high energy conversion efficiencies and low emissions, Solid Oxide Fuel Cells (SOFCs) show promise as a replacement for combustion-based electrical generators at all sizes. Further increase of SOFC efficiency can be achieved by microstructural optimization of the oxygen-ion conducting electrolyte and the mixed ionic-electronic conducting cathode. By application of nanoscaled thin films, the exceptionally high efficiency allows the realization of mobile SOFCs.