A Unified Testing Method for Systematic Evaluation of Lithium Plating in Commercial Li-Ion Batteries
Lithium-ion batteries are widely used due to their high energy density and long cycle life, yet lithium plating remains a critical degradation and safety concern, particularly during fast charging or low-temperature operation. This phenomenon leads to capacity loss and poses severe safety risks such as internal short circuits and thermal runaway. A reliable and standardized […]
Region-specific optimization of lithium- and sodium-ion battery cells for costs and performance
Sodium‑ion batteries (SIBs) are frequently promoted as a low‑cost alternative to lithium‑ion batteries (LIBs), in particular LFP (LiFePO₄), primarily due to their reliance on more abundant raw materials. However, their techno‑economic competitiveness against LFP remains largely insufficiently quantified. This presentation addresses this gap by introducing a multi‑objective optimization framework that jointly evaluates manufacturing cost, volumetric […]
Kinetic Analysis of crosstalk and gas evolution during thermal abuse of Li-ion batteries
Lithium-ion batteries are the cornerstone of modern electrochemical energy storage, powering applications from portable electronics to electric vehicles and grid-scale systems. Yet despite their widespread adoption, their behavior under thermal abuse conditions remains a critical safety challenge. When subjected to excessive heat, these cells undergo a cascade of coupled degradation reactions that culminate in the […]
A simulation methodology for detecting arc formation in EV batteries during thermal propagation
Thermal propagation remains one of the most complex challenges in the development of lithium-ion traction batteries for electric vehicles. The regulatory safety standards are currently being revised and tightened. Achieving compliance with these evolving safety requirements will be essential for the success of future battery technologies. Arc formation is a critical risk factor for thermal […]
From risk analysis to advanced diagnostics: a global approach for lithium-ion battery pack safety
The rapid expansion of the electric vehicle market, with around 20% of global car sales in 2023, highlights the growing importance of battery technologies. At the same time, battery fires regularly appear in the news and represent a safety concern. Although electric vehicles experience fewer fires than internal combustion vehicles, battery fires are particularly difficult […]
Implementation of a real-time state-observer for Li-Ion cells using a thermo-electrochemical model and extended Kalman filter
The demand for ever shorter charging times for electric vehicles is currently one of the major challenges the automotive industry faces. The maximum achievable charging performance of the battery is limited by the physical properties of the battery cells. Accurate knowledge of the internal cell states offers the opportunity to operate Li-ion cells as close […]
Implementation of a real-time state-observer for Li-Ion cells using a thermo-electrochemical model and extended Kalman filter
The demand for ever shorter charging times for electric vehicles is currently one of the major challenges the automotive industry faces. The maximum achievable charging performance of the battery is limited by the physical properties of the battery cells. Accurate knowledge of the internal cell states offers the opportunity to operate Li-ion cells as close […]
Scalable water-based processing and electrolyte engineering for Fe/Mn–Prussian white sodium-ion batteries
Sodium-ion batteries are gaining increasing attention as a promising technology for cost-effective large-scale energy storage applications such as grid stabilization, backup power, and stationary energy systems. Among potential cathode materials, iron- and manganese-based Prussian Blue Analog (PBA) compounds are particularly attractive due to their cobalt- and nickel-free composition, abundance of raw materials, and favorable electrochemical […]
Impact of In-Plane and Through-Plane Thermal Gradients during Aging on the Thermophysical Properties of Lithium-Ion Battery Electrodes
For a safe operation of lithium-ion battery systems in electric vehicles a thermal management system is required. The design of thermal management systems is thereby commonly based on the respective cell behavior at the Begin of Life (BoL). Since the heat transfer via the thermal management system is always combined with the imposition of temperature […]
Simulative Investigation of the Thermophysical Properties of Established and Novel Battery Materials
Intercalation batteries such as lithium‑ and sodium‑ion cells have become the preferred choice for mobile and stationary energy storage because of their high energy‑ and power‑density. Efficient thermal management is indispensable to keep the cells within the optimal performance window, to slow degradation mechanisms and to prevent thermal runaway. The intense market competition forces developers […]