| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Latz, Arnulf
German Aerospace Center
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2024Lithium Redistribution Mechanism within Silicon-Graphite Electrodes: Multi-Method Approach and Method Validationcitations
- 2024Influence of Electrode Structuring Techniques on the Performance of All‐Solid‐State Batteriescitations
- 2024Lithiophilic interlayer driven 'bottom-up' metal infilling in high current density Li-metal anodescitations
- 2024Modelling of lithium whisker growth
- 2024Strategies to Spatially Guide Li Deposition in Porous Electrodes for High-Performance Lithium Metal Batteries
- 2024Synergistic Enhancement of Mechanical and Electrochemical Properties in Grafted Polymer/Oxide Hybrid Electrolytescitations
- 2024The role of the SEI for lithium whiskers in lithium metal batteries
- 2024Material parameters affecting Li plating in Si/graphite composite electrodescitations
- 2023Effect of Particle Size and Pressure on the Transport Properties of the Fast Ion Conductor t-Li7SiPS8citations
- 2023Description of the Silicon Voltage Hysteresis with a Visco-Elastoplastic SEI Model
- 2023Optimizing the Composite Cathode Microstructure in All‐Solid‐State Batteries by Structure‐Resolved Simulations
- 2022Effect of Particle Size and Pressure on the Transport Properties of the Fast Ion Conductor t-Li7SiPS8
- 2021Modelling of Lithium Droplet Formation During Lithium Dissolutio
- 2021New reduced‐order lithium‐ion battery model to account for the local fluctuations in the porous electrodes
- 2021Strategies towards enabling lithium metal in batteries: interphases and electrodes
- 2020Investigating the Nucleation of Lithium Deposits in Polycrystalline Solid Electrolytes
- 2020Mechanistic details of the spontaneous intercalation of Li metal into graphite electrodem
- 2019The importance of passive materials in Li-Ion battery electrodes
- 2012Constitutive models for static granular systems and focus to the Jiang-Liu hyperelastic law
Places of action
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document
Description of the Silicon Voltage Hysteresis with a Visco-Elastoplastic SEI Model
Abstract
The solid-electrolyte interphase (SEI) plays a crucial role in the performance and lifespan of lithium-ion batteries. Despite ongoing research, key aspects of this passivation layer remain unclear. Our study focuses on understanding SEI growth mechanisms and the mechanical behavior to improve battery lifetime and performance, contributing to more sustainable energy storage.In advanced lithium-ion batteries, capacity fade during open-circuit storage results mainly from SEI growth. We investigate electron and solvent diffusion mechanisms to describe SEI growth, considering the observed capacity loss depending on state-of-charge (SOC) and time. Our simulations reveal that electron diffusion explains both SOC dependence and time behavior, while solvent diffusion reproduces only one aspect [1]. This detailed understanding, including self-discharge effects, can also describe experiments with significant capacity fades.Looking ahead to applications such as aviation, the development of next-generation of lithium-ion batteries with increased storage capacity is imperative. Silicon, with its high theoretical capacity, is a promising candidate for future anodes. However, silicon anodes undergo substantial volume expansion that the SEI has to withstand. Consequently, significant strains and plastic flow emerge within the SEI [2]. Moreover, silicon exhibits an open-circuit voltage hysteresis, posing challenges due to detrimental heat generation and for accurately estimating the state-of-charge. While previous explanations focused on plastic models for silicon thin films and large particles, amorphous silicon nanoparticles were not considered. Our chemo-mechanical model of a silicon nanoparticle and SEI successfully replicates the observed open-circuit potential hysteresis in experiments [3]. In addition, viscous behavior of the SEI explains the voltage difference between slow cycling and the relaxed voltage in GITT experiments.1. Köbbing, L.; Latz, A.; Horstmann, B. J. Power Sources 2023, DOI: 10.1016/j.jpowsour.2023.232651.2. Kolzenberg, L.; Latz, A.; Horstmann, B. Batter. Supercaps 2022, 5, DOI: 10.1002/batt.202100216.3. Köbbing, L.; Latz, A.; Horstmann, B. ArXiv Preprint. 2023, DOI: 10.48550/arXiv.2305.17533.