The Effects Of Internal Stress And Lithium Transport On Fracture In Storage Materials In Lithium Ion Batteries
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The Effects Of Internal Stress And Lithium Transport On Fracture In Storage Materials In Lithium Ion Batteries
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Author : Klinsmann, Markus
language : en
Publisher: KIT Scientific Publishing
Release Date : 2016-03-08
The Effects Of Internal Stress And Lithium Transport On Fracture In Storage Materials In Lithium Ion Batteries written by Klinsmann, 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 2016-03-08 with Technology (General) categories.
Fracture of storage particles is considered to be one of the major reasons for capacity fade and increasing power loss in Li-ion batteries. In this work, we tackle the problem by merging a coupled model of mechanical stress and diffusion of Li-ions with a phase field description of an evolving crack. The novel approach allows us to study the evolution of the Li concentration together with the initiation and growth of a crack in an arbitrary geometry and without presuming a specific crack path.
The Effects Of Internal Stress And Lithium Transport On Fracture In Storage Materials In Lithium Ion Batteries
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Author : Markus Klinsmann
language : en
Publisher:
Release Date : 2020-10-09
The Effects Of Internal Stress And Lithium Transport On Fracture In Storage Materials In Lithium Ion Batteries written by Markus Klinsmann and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-10-09 with Science categories.
Fracture of storage particles is considered to be one of the major reasons for capacity fade and increasing power loss in Li-ion batteries. In this work, we tackle the problem by merging a coupled model of mechanical stress and diffusion of Li-ions with a phase field description of an evolving crack. The novel approach allows us to study the evolution of the Li concentration together with the initiation and growth of a crack in an arbitrary geometry and without presuming a specific crack path. This work was published by Saint Philip Street Press pursuant to a Creative Commons license permitting commercial use. All rights not granted by the work's license are retained by the author or authors.
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.
The Impact Of Recycling On The Fibre And The Composite Properties Of Carbon Fibre Reinforced Plastics
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Author : Hüther, Jonas Johannes
language : en
Publisher: KIT Scientific Publishing
Release Date : 2020-06-19
The Impact Of Recycling On The Fibre And The Composite Properties Of Carbon Fibre Reinforced Plastics written by Hüther, Jonas Johannes 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 2020-06-19 with Technology & Engineering categories.
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.
Deformation And Fracture Properties Of The Soft Magnetic Composite Somaloy 700 3p On Different Length Scales
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Author : Schwark, Tabea Gisela
language : en
Publisher: KIT Scientific Publishing
Release Date : 2018-07-09
Deformation And Fracture Properties Of The Soft Magnetic Composite Somaloy 700 3p On Different Length Scales written by Schwark, Tabea Gisela 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 2018-07-09 with Grinding and polishing categories.
Soft Magnetic Composites (SMCs) typically consist of large iron particles coated with a fairly thin inorganic layer. The combination of soft particles with a brittle layer causes, however, a rather poor mechanical behaviour of the SMCs. The particle boundaries of the specific SMC Somaloy 700 3P can be classified into four different types according to the complexity of their layers. Tests on both micro- and macroscale showed that the particle-boundary interface is critical in terms of failure.
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.
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.
Micromechanical Study On The Deformation Behaviour Of Directionally Solidified Nial Cr Eutectic Composites
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Author : Kumar, Amritesh
language : en
Publisher: KIT Scientific Publishing
Release Date : 2017-11-06
Micromechanical Study On The Deformation Behaviour Of Directionally Solidified Nial Cr Eutectic Composites written by Kumar, Amritesh 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 2017-11-06 with categories.