P3-041
The continued electrification of the automotive sector is bringing the challenges of battery electric vehicles (BEVs) into focus, particularly in terms of fast charging capability, safety aspects and range. High-energy cells offer potential solutions to these challenges, but are associated with reduced thermal stability, which increases the risk of thermal runaway (TR) and thermal propagation […]
P5-060
Lithium plating is a key degradation mechanism which results from operating in cold temperatures (or high C-rates) and can ultimately contribute to catastrophic failure of lithium-ion batteries via short circuit. Predicting the onset of Li plating via non-invasive methods could allow for BMS’s to modify cell operating conditions to minimise cell degradation and extend cell […]
P1-022
LiNiO2 (LNO) is one of the most assuring substitutes to LiCoO2 in Li ion batteries (LIBs). Research is underway to improve the cycle life of LNO for its commercial use. This investigation involves the doping of Molybdenum (Mo), Niobium (Nb) and Zirconium (Zr) in lithium nickel oxide (LNO), marked difference in primary particle size morphology […]
074
The integration of advanced battery technologies is crucial for the success of More Electric Aircraft (MEA), enabling network stability and high-power supply for electrified aviation propulsion. This paper presents a novel adaptive battery protection circuit with self-controlled precharge for versatile load management. The circuit ensures the safe operating area (SOA) of battery cells under all […]
P2-023_Kiel
High-voltage batteries consist of a network of individual battery cells, where the number of series-connected cells is significantly larger than the number of parallel-connected cells (s>>p). Understanding and controlling the short-circuit behavior of such systems is crucial for designing safe and efficient high-voltage battery pack systems. Applications aiming for operating voltages above 1500V may, depending […]
P5-008
To produce battery cells ever more cheaply, the production processes must be optimised continuously. With a throughput of 0.6 to 0.7 GWh/a per electrolyte filling system, the process is a bottleneck in cell assembly and must be highly parallelized to keep up with the throughput of a gigafactory. Additionally, electrolyte filling is decisive for the […]
P5-024
The lithium sulfur (Li-S) cell chemistry is promising due to the high specific capacity of its active materials resulting in high specific energy cells. Consequently, this battery type is notably suitable for lightweight applications such as aviation. Sulfurized polyacrylonitrile (SPAN) is one of the currently highly prominent materials offering the advantages of the active material […]
P1-015
Due to abundant raw materials, low costs and promising high reversible specific capacities, hard carbons (HCs) are a common choice for commercially manufactured anodes in sodium-ion batteries (SIBs). Despite their potential and extensive use, the storage mechanism is still under debate. The non-stoichiometric adsorption mechanism also means that the search for an upper limit for […]
P5-074
Given the growing use of Lithium-ion batteries (LIBs), the lack of available critical raw materials like e.g. Li, and Co, and recycling issues like ineffective procedures, it is currently only feasible to recover complex battery components through mechanical pre-treatment steps followed by purification via pyrometallurgical or hydrometallurgical methods. However, in mechanical processes at the crushing […]
P1-036
High-energy cathode materials in Li-ion batteries, such as NMCs (LixNiyMnzCo1−y−zO2), are susceptible to surface degradation upon exposure to water, including ambient atmospheric humidity. In humid conditions, NMC materials are prone to lithium loss from their surface structure, leading to the formation of salts such as Li2CO3 and LiOH on the powder’s surface. These salts do […]