CFP-5504
Diagnosing battery degradation is critical for understanding the state of a cell in operation to predict remaining useful life. Degradation Mode Analysis (DMA) is increasing in popularity as a tool for diagnosing the state-of-health (SOH) in more detail than capacity-based methods. By attributing degradation to loss of lithium inventory (LLI) or loss of active material […]
CFP-5503
The safety of the Li-ion battery is known to be a critical issue due to its high energy density and the high flammability of most of its components. Here we report on observations of significant gassing in large commercial Li-ion pouch cells during end-of-life (EoL) storage at supposedly ideal storage temperature, as well as the […]
CFP-5502
Given the widespread infrastructure for slurry-based battery electrode production, this method remains the predominant and most critical process route for manufacturing battery electrodes. Here, traditional rotation tests, typically conducted at fixed shear rates steps, offer quick viscosity estimates and are essential for production processes, such as mixing, coating as well as quality control. However, while […]
CFP-5501
Li-ion batteries are more prone to fires than other battery technologies due to their inherent higher energy density as well as the flammability of especially electrode materials, separator, and electrolyte solvents. Ageing and degradation can contribute to considerably decrease the safety of a Li-ion battery, but the exact impact from ageing on safety of battery […]
CFP-5500
Manufacturing of battery cells remains a cost and resource intensive endeavor. Rising prices for energy and materials are further challenging for the manufacturers. In particularly the coating and drying of the electrodes is a crucial step, which possess high potential for cost reduction. In the state-of-the-art tape-casting process for electrode production, materials need to be […]
CFP-5499
The battery enclosure may account for up to 20-30% of the total weight of a battery electric vehicle. Efforts to reduce the weight of the battery enclosure, and hence the entire vehicle, mainly revolve around efficient design and appropriate material selection. In a previous work, parametric and topology optimization were carried out to reduce the […]
CFP-5497
Lithium-ion batteries (LIBs) demand for electromobility, portable electronics and gride energy storage applications is ramping up dramatically. This has heightened the need for battery precursors materials to supply the emerging gigafactories globally. However, in the light of the scarcity of critical raw material resources such as lithium, cobalt, and nickel, developing efficient and affordable recycling […]
CFP-5495
The formation process is a crucial and costly final step in manufacturing battery cells, accounting for up to 33% [1] of production cost. During this stage, a protective interphase layers are stablished at the electrochemically active interfaces that enable a stable operation of the cell outside the electrolyte’s electrochemical stability window. The formation process, in […]
CFP-5494
The densification of separators for solid-state batteries is a key requirement for achieving high energy densities, improved ionic conductivities, and defined microstructures. In this study, fundamental investigations of the densification of Li6PS5Cl- and Li3PS4-based separators by uniaxial pressing and calendering were conducted. Separator slurries based on p-xylene as solvent and a hydrogenated nitrile butadiene rubber […]
CFP-5486
Layered sodium transition metal oxides NaxTMO2 are under ongoing investigation as cathode active materials for sodium ion batteries. Among the wide variety of transition metal compositions, sodium contents and – closely linked – different crystal structures [1]-[3], we focus on NaxFe0.1Mn0.6-yNi0.3-zMy+zO2 (M = Mg or Zn) and investigate the effects of Mg/Zn-doping on the electrochemical […]