Weiterentwicklung Experimenteller Methoden Zur Ermittlung Thermodynamischer Werkstoffdaten Von Lithium Ionen Batterien
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Weiterentwicklung Experimenteller Methoden Zur Ermittlung Thermodynamischer Werkstoffdaten Von Lithium Ionen Batterien
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Author : Giel, Hans
language : de
Publisher: KIT Scientific Publishing
Release Date : 2019-10-31
Weiterentwicklung Experimenteller Methoden Zur Ermittlung Thermodynamischer Werkstoffdaten Von Lithium Ionen Batterien written by Giel, Hans 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 2019-10-31 with Science categories.
Modeling Transport Properties And Electrochemical Performance Of Hierarchically Structured Lithium Ion Battery Cathodes Using Resistor Networks And Mathematical Half Cell Models
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Author : Birkholz, Oleg
language : en
Publisher: KIT Scientific Publishing
Release Date : 2022-10-05
Modeling Transport Properties And Electrochemical Performance Of Hierarchically Structured Lithium Ion Battery Cathodes Using Resistor Networks And Mathematical Half Cell Models written by Birkholz, Oleg 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 2022-10-05 with Science categories.
Hierarchically structured active materials in electrodes of lithium-ion cells are promising candidates for increasing gravimetric energy density and improving rate capability of the system. To investigate the influence of cathode structures on the performance of the whole cell, efficient tools for calculating effective transport properties of granular systems are developed and their influence on the electrochemical performance is investigated in specially adapted cell models.
Consequences Of Hydroxyl Generation By The Silica Water Reaction Part Ii Global And Local Swelling Part Iii Damage And Young S Modulus
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Author : Fett, Theo
language : en
Publisher: KIT Scientific Publishing
Release Date : 2022-07-11
Consequences Of Hydroxyl Generation By The Silica Water Reaction Part Ii Global And Local Swelling Part Iii Damage And Young S Modulus written by Fett, Theo 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 2022-07-11 with Science categories.
Water diffusing into silica surfaces gives rise for several effects on diffusion behaviour and mechanical properties. In a preceding booklet, we focused on diffusion and fiber strengths and deformations which were obtained by water soaking under external loading. In the present booklet we deal with results and interpretations of strength increase in the absence of applied stresses.
Consequences Of Hydroxyl Generation By The Silica Water Reaction Part I Diffusion And Swelling
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Author : Fett, Theo
language : en
Publisher: KIT Scientific Publishing
Release Date : 2022-07-11
Consequences Of Hydroxyl Generation By The Silica Water Reaction Part I Diffusion And Swelling written by Fett, Theo 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 2022-07-11 with Science categories.
Water diffusing into silica surfaces gives rise for several effectson diffusion behaviour and mechanical properties. Water added to silica glass increases its specific volume so that the silica expands near the surface. Mechanical boundary conditions give rise for compressive “swelling stresses”. This fact provides a tool for the interpretation of many experimental observations from literature.
Development Of Nbn Based Kinetic Inductance Detectors On Sapphire And Diamond Substrates For Fusion Plasma Polarimetric Diagnostics
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Author : Mazzocchi, Francesco
language : en
Publisher: KIT Scientific Publishing
Release Date : 2022-07-01
Development Of Nbn Based Kinetic Inductance Detectors On Sapphire And Diamond Substrates For Fusion Plasma Polarimetric Diagnostics written by Mazzocchi, Francesco 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 2022-07-01 with Technology & Engineering categories.
This work aimed at designing, studying and producing the first prototypes of KIDs tailored for fusion plasma polarimetric diagnostics. Diamond was considered for the first time as substrate material for low-temperature superconducting detectors given its unmatched optical, radiation hardness and thermal qualities, properties necessary for working environments potentially saturated with radiation. This work represents a first step toward the optimization and final application of this technology.
Dynamic Model Based Analysis Of Oxygen Reduction Reaction In Gas Diffusion Electrodes
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Author : Röhe, Maximilian
language : en
Publisher: KIT Scientific Publishing
Release Date : 2024-01-09
Dynamic Model Based Analysis Of Oxygen Reduction Reaction In Gas Diffusion Electrodes written by Röhe, Maximilian 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 2024-01-09 with categories.
In this work, the first simulation model of oxygen depolarized cathodes (ODC), which are silver catalyst-based gas diffusion electrodes, is presented that considers the phase equilibrium of the gas-liquid interface and structure-related inhomogeneities in electrolyte distribution. By means of the model it has been identified that mass transport of water and ions in the liquid phase is a crucial factor for electrode performance and how it is influenced by the electrode structure.
On The Electro Chemo Mechanical Coupling In Solid State Batteries And Its Impact On Morphological Interface Stability
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Author : Ganser, Markus
language : en
Publisher: KIT Scientific Publishing
Release Date : 2021-03-09
On The Electro Chemo Mechanical Coupling In Solid State Batteries And Its Impact On Morphological Interface Stability written by Ganser, Markus 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 2021-03-09 with Technology & Engineering categories.
Solid state batteries with a lithium metal electrode are considered the next generation of high energy battery technology. Unfortunately, lithium metal is prone to harmful protrusion or dendrite growth which causes dangerous cell failure. Within this work the problem of protrusion growth is tackled by deriving a novel electro-chemo-mechanical theory tailored for binary solid state batteries which is then used to discuss the impact of mechanics on interface stability by numerical studies.
Phase Field Modeling Of Phase Changes And Mechanical Stresses In Electrode Particles Of Secondary Batteries
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Author : Zhang, Tao
language : en
Publisher: KIT Scientific Publishing
Release Date : 2021-09-27
Phase Field Modeling Of Phase Changes And Mechanical Stresses In Electrode Particles Of Secondary Batteries written by Zhang, Tao 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 2021-09-27 with Technology & Engineering categories.
Most storage materials exhibit phase changes, which cause stresses and, thus, lead to damage of the electrode particles. In this work, a phase-field model for the cathode material NaxFePO4 of Na-ion batteries is studied to understand phase changes and stress evolution. Furthermore, we study the particle size and SOC dependent miscibility gap of the nanoscale insertion materials. Finally, we introduce the nonlocal species concentration theory, and show how the nonlocality influences the results.
Structure Evolution In Tribological Interfaces Studied By Multilayer Model Alloys
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Author : Cihan, Ebru
language : en
Publisher: KIT Scientific Publishing
Release Date : 2020-10-21
Structure Evolution In Tribological Interfaces Studied By Multilayer Model Alloys written by Cihan, Ebru 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 2020-10-21 with Technology & Engineering categories.
Recent studies of deformation mechanisms of metals and alloys pioneer the better investigation of the friction and wear behavior of materials with well-defined initial microstructures. Within this scope, in this work, the effect of sub-surface deformations on the resulting friction and wear behavior has been searched by means of a systematic experimental study on Au-Ni metallic multilayer model alloy system.
Multiscale Modeling Of Curing And Crack Propagation In Fiber Reinforced Thermosets
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Author : Schöller, Lukas
language : en
Publisher: KIT Scientific Publishing
Release Date : 2024-03-15
Multiscale Modeling Of Curing And Crack Propagation In Fiber Reinforced Thermosets written by Schöller, Lukas 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 2024-03-15 with categories.
During the production of fiber-reinforced thermosets, the resin material undergoes a reaction that can lead to damage. A two-stage polymerization reaction is modeled using molecular dynamics and evaluations of the system including a fiber surface are performed. In addition, a phase-field model for crack propagation in heterogeneous systems is derived. This model is able to predict crack growth where established models fail. Finally, the model is used to predict crack formation during curing.