Investigation of the influence of different aging stresses on the heat generation of an NMC Li-Ion battery
Thermal models get more and more important for the performance of battery systems within vehicle applications. Knowing how temperature and heat of the cells and assembled systems are evolving, can decrease the potential limitations. It leads to a more constant performance. The thermal behavior is not only dependent to actual conditions like SoC, ambient temperature […]
Vacuum applications in battery production
Safety concerns and costs of cell failure to battery manufacturers drive the search for reliable test methods to ensure leakage-free battery cells. However, there are currently no standardized test methods used in battery industry to find leaks at cell level. In this study, a series of pouch cells were made with and without deliberate defects […]
In-depth insights into the impact of FEC on lithium metal electrodes by the utilization of an uncontaminated preformed SEI
The rising demand for high-performance energy storage solutions has led to a revival of the lithium metal battery (LMB), due to the beneficial synergistic properties of lithium metal with a high specific capacity (3860 mAh/g) and the lowest reduction potential (-3.04 V vs. standard hydrogen electrode (SHE)). “;“The viability of lithium metal anodes is largely impacted […]
Can fusing Li-ion cell impedance in BMS algorithms lead to further optimization of next generation EV battery system?
In addition to the costs, range anxiety and fast-charging capability, the safety of Li-ion batteries (LIBs) is most important. In the proposed conference contribution, we introduce the practical application use cases of Electrochemical Impedance Spectroscopy (EIS) in electric vehicles (EVs) and how EIS can further complement the current BMS data driven algorithms, enabling better use […]
Battery tracking using blockchain-based platforms
Blockchain technology has been recognized as one of the most promising technologies in industrial applications. There are a variety of possible applications such as supply chain tracking, creating digital twins, digital platforms for battery swapping, tokenization and a focus on the second life and recycling market. This research proposes a study of possible blockchain applications […]
Polymeric backbone eutectogel electrolyte: Preparation of a composite positive electrode for high-energy density lithium-ion batteries
The need for sustainable mobility leads to a growth of the market of electric cars. At this moment, lithium-ion batteries (LIBs) are the most suitable technology due to their high gravimetric and volumetric energy density. In all roadmaps for battery development, solid-state batteries are the next step after advanced LIBs. They offer the potential to […]
Modelling solvent transport in lithium-ion batteries
Liquid electrolytes in commercial lithium-ion batteries (LIBs) normally consist of more than two solvents to balance multiple requirements such as high ionic conductivity and low solution viscosity (A. Wang, et al., Cell Reports Physical Science, vol. 3, no. 9, 2022). However, only one solvent is considered in the widely used Doyle-Fuller-Newman (DFN) model for LIBs, […]
Empirical modeling of degradation mode evolution during lithium-ion battery aging
Lithium-ion battery degradation leads to the fade of capacity and power capability over lifetime. Thus, degradation is a key concern during the design of lithium-ion batteries and lithium-ion battery systems. To estimate the effect of battery degradation during the design process, lithium-ion battery aging models are employed. These models are commonly parameterized on capacity fade […]
The first studies of the impact of calendaring and lamination on full cell electrochemistry with Si@C-anodes
The electric vehicle industry requires batteries with high capacity and power to satisfy the current great market demand. For this reason, there is a great interest in the research and implementation of new materials inside the electrodes, which can improve the final performance of the battery. On the one hand, Ni-rich NMC material is being […]
A comparison between physics-based Li-ion battery models
Physics-based electrochemical battery models are widely used as powerful tools for simulating lithium-ion battery behavior and for providing an understanding of the internal physical and electrochemical processes. However, due to their complexity and high computational demand, these models may not be feasible for battery management systems (BMS) and long-term aging simulations. Models with reduced order, […]