CFP-5475
Lithium-Plating ist ein bedeutender Alterungsmechanismus in Lithium-Ionen-Batterien, der große Auswirkungen auf deren Leistung und Sicherheit hat. Dieser Prozess tritt auf, wenn metallisches Lithium an der Anode abgelagert wird, was zu Schäden und Leistungsverlusten führen kann. Es gibt verschiedene Formen des Platings, darunter homogenes, dendritisches und mossy Plating. Besonders ausgeprägt tritt das Plating bei hohen C-Raten […]
CFP-5474
Self-heating ignition in lithium-ion batteries is a hazardous failure mode that can arise during storage or transport when internal heat generation exceeds heat dissipation, triggering venting and/or thermal runaway and potentially leading to fire or explosion. Although widely studied, previous research has predominantly focused on fresh batteries, leaving a knowledge gap regarding ignition risks in […]
CFP-5473
The growing demand for high-energy cathode materials in Li-ion batteries has brought NMC (LixNiyMnzCo1−y−zO2) compounds to the forefront of research and development, aiming to fulfill the requirements of modern applications. Increasing the nickel content in the NMC structure offers a promising route to further enhance the energy performance of NMCs. However, this adjustment also induces […]
CFP-5472
In recent years, sodium-ion batteries (SIB) have become of great interest in energy storage systems. SIBs offer advantages, including the availability of raw materials, the potential for lower costs, and the possibility of discarding copper as the anode collector material. While several works investigate the calendric and cyclic aging of lithium-ion batteries (Schmalstieg et al. […]
CFP-5471
Around four billion discarded tires are in landfills annually, highlighting the need for sustainable recycling methods. One solution is to transform waste tires into carbon powder as active anode material for alkali-ion battery. However, heavy metals and other contaminants in tires reduce the electrochemical performance of the resulting carbon material. Traditional approaches often employ concentrated […]
CFP-5470
Thermal gradients inside Lithium-Ion batteries are responsible for current inhomogeneities that accelerate cell degradation. For this reason, accurate thermal modelling is key to designing more reliable cells and packs and a thermal model should be able to predict heat generation accurately. Heat generation consists of reversible and irreversible contributions, the reversible component being governed by […]
CFP-5469
The increasing spread and use of lithium-ion batteries in a wide range of applications requires targeted adaptation and optimization of the cell design with regard to their specific use case. Due to the conflicting demands on the development time and costs of such battery cells, the use of model-based approaches is necessary at an early […]
CFP-5468
Given the ongoing discussion about the slowdown in the electric vehicle market, more and more cell production plants in the Western world are being put on hold or get even completely cancelled. Ramping-up cell production with limited experience and an immature products proves highly challenging. Additionally, external factors such as strict regulatory requirements, political changes, […]
CFP-5467
One of the major customers‘ demands on battery electric vehicles is the lifetime of the battery as a potential cost driver in the future and influencing factor on sales value. Battery aging is influenced by degradation mechanisms, driven by storage and operating conditions, known as calendric and cyclic aging. These mechanisms lead to a loss […]
CFP-5466
Sodium-ion batteries (SIBs) are considered a more sustainable, resource saving, and cost-effective alternative to lithium-ion batteries (LIBs) as they can be designed without using critical or scarce raw materials and compounds such as cobalt, copper, lithium or graphite [1,2]. These advantages on the material level, along with the ability of using existing manufacturing equipment, have […]