Thermal Fault Detection of Lithium-Ion Battery Packs Through an Integrated Physics and Deep Neural Network Based Model
A variety of faults and failures may occur in a battery pack over time, many of which are hard to determine based on conventional measurements. For example, a blockage in the cooling system would result in higher temperatures, but a fault would typically only be triggered if temperatures exceed a protection limit. This work proposes […]
Electrochemical Noise Analysis applied to new generation Li-ion batteries
Electrochemical Noise Analysis applied to new generation Li-ion batteries This work aims to assess the possibility for Electrochemical Noise Analysis (ENA) to be used as a diagnosis method for new generation Li-ion cells (LNMO, LTO, TNO). Since it is only based on electrical fluctuations (so called “noise”) generated by the system, this method has the […]
Influence of process conditions on direct and aqueous recycling of high nickel rich cathodes
With the increasing popularity of lithium ion batteries comes a corresponding increase in the number of aging batteries that will require recycling in the future. Direct recycling has the advantage of remaining the cathode material structure over other recycling methods (e.g. pyrometallurgy and hydrometallurgy) [1]. However, the technology readiness level (TRL) of direct recycling is […]
Optimization of in-line metrology for electrode coating production lines
Uniformity of the active electrode materials in cell construction is essential to achieve the safety and reliability of the battery in its intended application. Validation of the electrode loading and final dimensions of individual layers by post-production destructive means only sample a small portion of the total electrode sheet. Alternatively, in-line metrology is an essential […]
Artificial solid-electrolyte-interphase layer on silicon/graphite anode formed by atomic layer deposited ZnO films
Operation of Li-ion batteries is based on an insertion of Li ions in layered materials. Intercalation of Li into the graphite anode takes part during charging, while Li-ions are stored in the layered cathode materials during discharging. Graphite anode: intercalation of Li, excellent cycling performance, but low specific energy capacity (372 mAh/g). Silicon/graphite anode: Alloying […]
Influence of temperature dependent aging mechanism on the safety behavior of Li-ion pouch cells
Compared to many other characteristics of Li-ion batteries, the safety behavior is a critical property and should be examined carefully. However, the safety behavior can drastically change dependent on the prior aging conditions such as ambient temperature [1-4]. The temperature dependent aging behavior of commercial pouch cells is evaluated using an Arrhenius plot. Post-Mortem analysis […]
Fibre optic sensor options for the assessment of lithium-ion pouch cell degradation and safety
The implementation of safer, high-energy-density lithium-ion batteries remains a societal concern. A mandatory criterion for the development of the worst-case scenario, the thermal runaway of the battery cell, is an increased local heat generation to activate the disastrous exothermic chain reaction. The associated degradation reactions lead to higher temperatures and pressures and consequently irreversible changes […]
Data-assisted vacuum crushing and drying of end-of-life batteries
Data-assisted vacuum crushing and drying of end-of-life batteries Closing material loops is essential for sustainable electric mobility, for example, to ensure the supply of battery materials. Therefore, efficient recycling systems are needed, which maximize the output quantity and quality while minimizing the associated costs and environmental impacts [1]. A common way for recycling lithium-ion batteries […]
The importance of Evolved Gas Analysis in the battery testing process
Improving battery performance and safety are among the major challenges in the current battery development process. In order to achieve major progress in these fields, the materials employed in the battery assembly need to be carefully designed, tested and characterized. One of the most difficult tasks that needs to be addressed in this phase is […]
Mechanically refuellable zinc-air battery: A safe and sustainable alternative for large-scale, long-duration energy storage
P4-029-Akhil Kongara Rising concerns over global warming have motivated scientists to explore various clean energy generation options. In this quest for clean energy generation, renewables like solar and wind have gained significant traction and have seen a tremendous increase in energy generation from these sources over the last decade. However, these renewable sources are intermittent […]