CFP-5514
Estimating the state-of-charge SoC and state-of-health SoH of batteries is a key task for battery management systems. Observer based approaches such as the Dual-Extended-Kalman-Filter for joint SoC- and SoH-estimation have been proposed more than two decades ago and countless publications since then have shown the applicability of similar and advanced estimation methods. Two questions essential […]
CFP-5513
Blend electrodes are widely used as lithium-ion battery cathodes and are getting more and more prominent on the anode side. The idea of blend electrodes is to combine characteristic properties of different active materials with the aim of improving overall cell performance or to adjust specific performance requirements according to the application of the cell. […]
CFP-5512
Differential Voltage Analysis (DVA) is a commonly used method for investigating electrochemical processes, particularly at the electrode interfaces of batteries. It is especially useful for analysing phenomena such as phase transitions and intercalation processes within lithium-ion batteries. The successful use of DVA in studies of lithium-ion batteries raises the question of whether the method can […]
CFP-5511
The demand for higher energy density in Li-ion batteries have resulted in a progressive shift from purely graphitic carbon electrodes to composite materials involving a combination of graphite (Gr) and silicon oxide (SiOx). The presence of two active materials with distinct open circuit voltages results in an uneven lithiation during cycling, causing a disparate use […]
CFP-5510
Understanding battery degradation is essential for accurate health diagnostics and long-term performance prediction. Degradation mode analysis (DMA), a non-destructive technique, leverages the voltage response, which reflects the cell’s thermodynamic equilibrium, to dissect aging mechanisms . Since DMA relies on accurate thermodynamic data, open circuit voltage (OCV) measurements provide the most suitable starting point for this […]
CFP-5509
Due to its low atomic weight and reduction potential, the use of lithium metal as an anode material in secondary batteries has the potential to substantially increase the energy density of energy storage systems. However, the high reactivity of lithium with the electrolyte and its tendency to form dendritic structures upon deposition preclude its application […]
CFP-5508
The demand for energy storages with high energy density and long lifetime is growing rapidly. Using lithium metal as an anode would maximize the energy density of lithium batteries by having an anode-free system in the discharged state. Lithium-ion batteries can undergo several thousand cycles using liquid electrolytes with low capacity losses and very low […]
CFP-5507
Impact of Hysteresis on Calendar Aging in 3 Electrode Li-Ion Cells with Silicon-Rich Anodes: OCV and Float Current Insights Iqra Kiran, Qing Yu, Christian Endisch, Meinert Lewerenz Research Group Electromobility and Learning Systems, Technische Hochschule Ingolstadt, D-85049, Germany; els@thi.de Lithium-ion batteries (LIBs) with nickel-rich cathodes and silicon-graphite (SiC) anodes are expected to be deployed in […]