P5-032
Electrode cutting is a significant process step in the production of lithium ion batteries. Different cutting technologies exist to singularize electrode sheets out of electrode coils e.g. mechanical and laser cutting. The laser cutting process combines the conventional notching of the current collector and cutting out electrode sheets. This process provides a high cutting flexibility […]
P3-039
The demand for more powerful lithium-ion cells necessitates new active materials and electrode formulations with higher specific capacities. Silicon and lithium metal are promising candidates for enhancing anodes, but their integration presents challenges, particularly related to significant volume changes—silicon can expand by about 300% during lithiation, and lithium’s deposition can be extensive. Understanding the mechanical […]
P2-003
Establishing an independent and sustainable battery value chain necessitates a closed-loop recycling approach. Recycling end-of-life lithium-ion battery (LIB) cells is critical to prevent their disposal in landfills, where they may release harmful substances into the environment, including fluorine (F), nickel (Ni), manganese (Mn), cobalt (Co), and organic components such as electrolytes and their degradation products. […]
P3-009
Lithium-ion batteries are used in a wide variety of applications, with growing expectations for even higher power and energy densities. Optimising battery design and operation is crucial, especially in extreme conditions e.g. charging/discharging at high rates. Large-format pouch cells are often the preferred choice in such scenarios, since their high surface-area-to-volume ratio enables effective heat […]
P2-048
The designed standard test characterizes Li-ion cells plating behavior, revealing the dependency of plating on temperature and current. Panasonic cells exhibit greater plating than Sony cells under identical conditions, with reversible plating assessed via Differential Voltage Analysis (DVA) and irreversible plating determined by capacity differences before and after plating.
P3-063
The traction battery used in railway systems faces significant challenges in estimating the state of a large-scale battery system due to limited computing power and memory. Additionally, bidirectional communication between the battery system and the cloud is often unavailable for various reasons. Moreover, state estimation algorithms require numerous parameters to cover the entire battery lifecycle. […]
P3-032
One of the primary factors that impede the adoption of electric vehicles (EVs) is the time required for charging, which limits their suitability for long-distance travel. Reducing the charging time would enhance the competitiveness of EVs and address the range anxiety that currently hinders their social acceptance. Nonetheless, the temperature increase that occurs during the […]
P1-00
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 […]
P5-014
At Novac, the mission to revolutionize the battery and supercapacitor sector is being carried out with a clear vision to develop innovative solutions that are easy to adopt, developing true drop-in replacements of currently marketed products. Novac technologies are engineered with the aim to be adaptable to current production lines with minimal changes for manufacturers […]
P5-004
The demand for high-energy-density lithium-ion batteries (LIBs) is increasing due to the growing need for portable electronic devices and electric vehicles. Within this work we show innovative approaches for current collectors and anodes, including the preparation of a light-weight current collector by metallization polymer films and the synthesis of pure silicon anodes by physical vapor […]