EV-Batterien in der Produktivitätsfalle – wie industrielle Computertomografie hohe Ausschussraten auf Zellebene senken kann*
The high demand for all kinds of Electrical Vehicles (EV) increases the pressure on battery cell manufactures – they have to increase the volume of all types of battery cells, they have to lower the costs and all that by keeping their quality high or even improve their yield. The squaring of this circle is […]
Investigations on Lithium Deposition as a Function of Current Densities with an Optically Accessible Cell
A market-ready rechargeable high-energy lithium metal battery (LMB) would be a revolution in the development of energy storage systems. The outstanding properties, such as a theoretical achievable capacity 10-times higher than graphite, a very low negative redox potential, and a low atomic weight, make lithium metal an attractive anode material.[1,2] One of the main obstacles, […]
Introduction of a Test Bench – Localized pressure analysis to optimize lithium-ion battery lifetime
The pressure acting on a lithium-ion battery cell is an important parameter in battery design. Analyzing the local pressure distributions support the understanding of spatially resolved increases in pressure due to an inhomogenous cell degradation. These investigations aim to homogenize the cell degradation by developing pressure patterns which lead towards a uniformly distributed current and […]
LiIon Round Cell Alternatives for the automotive market
Currently most so called high end suppliers for round cells LiIon are not able to supply to the general market as they are focusing on the automotive market. When talking about the automotive market we are not only talking about demand for traction batteries, but also batteries for other functions like E-Call are considered. Especially […]
Introduction of a Test Bench – Localized pressure analysis to optimize lithium-ion battery lifetime
The pressure acting on a lithium-ion battery cell is an important parameter in battery design. Analyzing the local pressure distributions support the understanding of spatially resolved increases in pressure due to an inhomogenous cell degradation. These investigations aim to homogenize the cell degradation by developing pressure patterns which lead towards a uniformly distributed current and […]
Evaluation of Alternative Methods for Determination of Battery Cells Heat Capacity and Thermal Resistance
Thermal characterisation of battery cells is counted as an important basis for batteries thermal modelling amongst which Heat Capacity has a crucial role. Bulk Heat Capacity and Thermal Resistance can be determined using expensive experimental equipment such as Calorimeters or deconstruction of battery cells. While recent published works [3] have shown a promising method consisting […]
Effect of additives and binders on the electrochemical performance of Zinc anodes in Zinc – Air Batteries
In the race for ever higher capacity battery technologies that are also safe and environmentally benign the group of secondary Metal-Air batteries have received considerable attention. Of these, Zinc-Air batteries (ZABs) are the most mature and closest to being commercially viable. The intrinsic safety characteristics of systems using aqueous electrolytes, the high theoretical specific energy […]
Continuous vs. batch-type processing of negative electrode pastes for lithium ion batteries
In order to produce lithium-ion batteries efficiently and to meet the growing demands on the production process, a reduction of the corresponding processing costs, process time, material and energy consump-tion are of central importance. In this context, the mixing process is particularly relevant, as its quality significantly determines the properties of the generated electrode paste […]
Borate-Free Electrolytes for Calcium Metal Batteries
Since Li-ion batteries are close to their theoretical energy densities, metal batteries gain increasing attention. Although the main focus is on lithium metal batteries, they are still considered “unsafe” due to dendrite formation and therefore the risk of thermal runaway. [1] Alkaline earth metals, such as calcium and magnesium, are significantly less prone to dendrite […]
Battery state estimation algorithm performance and the impact of different application characteristics
In recent years, rapid improvements in battery technologies in addition to decreasing prices have led to their widespread use in various applications. Due to their high energy and power density, efficiency and service life, lithium-ion batteries have become established in the vast majority of sectors. In addition to power tools and multimedia applications, this includes […]