P5-064
The conversion of the global energy supply from carbon emitting to renewable sources requires a large amount of energy storage systems being efficient at high energy- and power densities. Many requirements are fulfilled best by Lithium-ion batteries which are prone to thermal runaways leading to fire and severe damage after unusual usage. For some applications, […]
P3-060
Fast charging of lithium-ion batteries requires high current rates, which can lead to unwanted side reactions like metallic lithium deposition (LD). LD accelerates cell aging and causes irreversible capacity loss and should therefore be avoided. To address this challenge, multi-stage constant current (MSCC) charging protocol offers an advanced fast-charging approach that considers battery aging, helping […]
P2-005
Pyro- and hydrometallurgical processes or a combination of both have been widely established so far for the recycling of lithium-ion batteries. However, these methods are harmful for the environment e. g. due to high CO2 emissions. From these two, hydrometallurgy is a selective method to obtain the metals, yet, requires a large amount of chemicals. […]
P5-054
This study comprehensively investigates the swelling behavior and structural changes in a prismatic lithium-ion battery module using CT imaging and in-situ mechanical measurements. To facilitate efficient and accurate segmentation of battery cells within the module, an automated CT image processing algorithm based on computer vision and machine learning was developed. By comparing CT scans taken […]
P2-047
Thermal runaway (TR) safety testing requires comprehensive evaluations at various levels (component tests, cell, module, and system level). Component tests, particularly for fire protection materials, play a crucial role in mitigating the effects of TR events. This research aims to establish comparable alternative methods for representing TR conditions. The effectiveness and comparability of these new […]
P4-006
In view of the new EU Battery Regulation, battery manufacturers will need to adopt their business models to comply with the mandatory minimum recycled material content levels for new battery cells by the end of the decade. According to our research, there are at present no recycled materials on the open market that would fulfill […]
P1-043
The oxide-based garnet LLZO:Ga (Li6.4Ga0,2La3Zr2O12) is a promising solid-state battery electrolyte, offering high ionic conductivity, a wide electrochemical stability window, and lithium metal compatibility. However, upscaling of production requires to address challenges like reproducibility, cost reduction and energy efficiency. This work focuses on two scalable production techniques: Spray drying for synthesizing LLZO:Ga powders with controlled […]
P1-068
The fast-charging capability of lithium-ion batteries (LIBs) is significantly influenced by the microstructure of the electrode materials. During the electrode production process, the microstructure is significantly influenced by the calendering step, that involves the compression of electrodes between two rollers. This process step alters the density, porosity and particle orientation as well as the tortuosity, […]
P1-068
The fast-charging capability of lithium-ion batteries (LIBs) is significantly influenced by the microstructure of the electrode materials. During the electrode production process, the microstructure is significantly influenced by the calendering step, that involves the compression of electrodes between two rollers. This process step alters the density, porosity and particle orientation as well as the tortuosity, […]
P3-029
This paper presents the development and validation of a high-fidelity thermo-electric model for lithium-ion batteries at both the cell and module levels, using MATLAB/Simulink and the Simscape Battery toolbox. Lithium-ion batteries exhibit highly non-linear electrical and thermal behaviours, making accurate modelling essential for effective design, simulation, and control in real-world applications. An equivalent circuit modelling […]