A5002442359- Advanced Battery Technologies Research
- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Physics and Engineering Research Articles
- Flexible and Reconfigurable Manufacturing Systems
- Transition Metal Oxide Nanomaterials
- Semiconductor materials and devices
Karlsruhe Institute of Technology
2016-2024
Most battery cells are developed according to a standard design and optimized regarding their electrical properties. However, firstly, there is demand for an individual cell adapted the application. Secondly, additional properties, example, thermal mechanical, decisive behavior should be considered in overall design. Therefore, present work introduces model-based development tool holistic of format-flexible cells, which future application, allowing different geometries within one system. The...
The performance and lifetime of lithium‐ion batteries are strongly influenced by the temperature distribution within cells, as electrochemical reactions, transport properties, aging effects dependent. However, thermal analysis numerical simulation inside cells can only be accurate underlying data on properties. This contribution presents a analytical model for predicting conductivity porous electrodes function microstructure parameters. Both models account morphology electrode structures...
Knowledge of the thermal transport properties individual battery components and their combination is required for design thermally optimized lithium‐ion batteries. Based on this, limiting can be identified potentially improved. In this contribution, microstructures commercial porous electrode coatings, stacks, cell stacks are reconstructed based experimentally determined structure parameters using a specifically developed generation routine. The effective conductivity generated stacked...
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The performance and aging behavior of a lithium-ion battery (LIB) are strongly influenced by inner processes as well outer influence factors like the thermal boundary conditions. A valuable established tool to describe gain better understanding cell is modelling using equivalent circuit models (ECM). For deeper more detailed insights into taking place inside cell, physically based models, resolving complex interaction charge, heat mass transfer electrochemical reaction physical equations...
A thermal management system is required to ensure the safe and optimized operation of a lithium-ion battery systems in electric vehicles. The design thereby commonly based on respective cell behavior only at Begin Life (BoL). During operation, various aging mechanisms occur both anode cathode side, depending chemistry. These change properties cells. For more profound understanding dependency State Health (SoH) until End (EoL) crucial. themselves depend temperature during aging. changes...
The impact of electrode formation is studied by the spatially and time‐resolved distribution transverse relaxation. In situ 7 Li nuclear magnetic resonance experiments are performed on an experimental lithium‐ion battery cell to study passivation via imaging relaxation in interelectrode volume. electrolyte battery, using technically relevant material, i.e., graphite lithium–nickel–cobalt–manganese–oxide, 2D imaging. 1 mol L −1 lithium hexafluorophosphate dissolved a binary mixture ethylene...
While it is well known that the electrochemical performance of lithium-ion batteries degrades with repeated cycling, impact aging on thermal properties less understood. Degradation transport within cell can lead to increased or even excessive temperatures in turn accelerated ageing runaway. Thus, understanding how impacts critical ensuring safe and reliable operation batteries. In this presentation, we evaluate evolution diffusivity, heat capacity, density electrodes battery cells which were...