P2-019_Tegetmeyer-Kleine
Lithium plating is a safety-critical side reaction in lithium-ion batteries that lowers efficiency, reduces usable capacity, and increases the risk of failure. Its assessment is still often based on manual post-mortem inspection, which is slow, subjective, and difficult to scale. This poster presents an automated computer-vision approach for the systematic characterization of lithium plating from […]
P1-107
Electrode cutting and notching are key steps in lithium ion cell manufacturing because they define the electrode edge quality and can introduce defects that influence performance and reproducibility. This work compares mechanical notching (punched) and laser cutting for commercial olivine type cathodes LFP and LMFP, with a focus on how electrochemical performance changes from lab […]
P1-038
Solid-state lithium-ion batteries with the superionic conductor Li6PS5Cl (LPSCl, Argyrodite) are regarded as one promising next-generation battery technology. They have shown outstanding performance in lab-scale cells, and the next step is to achieve practical operation in large-scale pouch cells. One of the key components in such pouch cells are LPSCl membranes, which as solid electrolyte […]
P2-041
Accurate and characterization of mismatches in cell characteristics is essential for quality battery production, handling and recycling. In this paper the key parameters cell impedance and open-circuit voltage (OCV) are analyzed in their variance as they are vital for assessing the state of health and lifespan of lithium-ion cells. Variations in these parameters reflect the […]
P2-081
For power tool applications such as chainsaws, both runtime and continuous power must be maximized. This work introduces a methodology for optimizing the microstructure of solid-state batteries tailored to power tool applications, which demand significantly higher power density compared to many other fields such as automotive for example. A network-based impedance model, adapted from Braun […]
P2-004
An ongoing integration of electrochemical impedance spectroscopy (EIS) into battery management systems shifts its use from lab efforts to real-world applications. To use the information from the EIS, mainly global model functions are defined to extract relevant parameters, requiring knowledge of cell behaviour and an overall spectrum to fit all necessary values. This contribution focuses […]
P2-066
Aluminum–graphite dual ion batteries (AGDIB) are cost effective in development because they employ inexpensive materials such as aluminum and graphite. Ionic liquids—specifically anolytes—serve as electrolytes, e.g., mixtures of 1 ethyl 3 methylimidazolium chloride ([EMIm]Cl) and aluminum trichloride (AlCl3). A composition with [EMIm]Cl:AlCl3 at 1:1.5 delivers very good performance, also TEA and urea based electrolytes are […]
P3-023
State of Health (SoH) estimations, and therefore accurate battery parameter information, is becoming increasingly important for battery management. The SoH is also a core feature of the European Union’s battery passport that will be rolled out next year. Currently, active diagnostics are gaining more ground in battery management research. The same applies for active balancing. […]
P3-023
State of Health (SoH) estimations, and therefore accurate battery parameter information, is becoming increasingly important for battery management. The SoH is also a core feature of the European Union’s battery passport that will be rolled out next year. Currently, active diagnostics are gaining more ground in battery management research. The same applies for active balancing. […]
P1-069
Lithium-sulfur (Li-S) batteries are postulated as alternatives to existing Li-ion battery technology; however, their practical use is often hampered by the polysulfide shuttle. Here, we report on the synthesis of sulfurized poly(styrene) (SPS) and sulfurized poly(vinylpyridine) (SPVP) as cathode materials for Li-S batteries. A simple and scalable synthetic method offers access to sulfurized polymers with […]