CFP-5370
To enable a shift from fossil fuels to renewable and sustainable transport, batteries must allow fast charging and exhibit extended lifetimes—objectives that traditionally conflict. Current charging technologies often compromise one attribute for the other, leading to either inconvenience or diminished resource efficiency in battery-powered vehicles. For lithium-ion batteries, the way to meet both objectives is […]
CFP-5369
Due to abundant raw materials, low costs and promising high reversible specific capacities, hard carbons (HCs) are a common choice for commercially manufactured anodes in sodium-ion batteries (SIBs). Despite their potential and extensive use, the storage mechanism is still under debate. The non-stoichiometric adsorption mechanism also means that the search for an upper limit for […]
CFP-5368
The performance and longevity of lithium-ion batteries (LIBs) are significantly influenced by operating conditions such as C-rate and voltage range during cycling. This systematic study investigates the aging mechanisms of LIBs under high-stress conditions, with a specific focus on the differences between aging at high and low C-rates across varying voltage ranges. Using a combination […]
CFP-5367
Lithium-ion batteries have become essential energy storage systems in contemporary society, driving a diverse range of applications that span from portable electronics to electric vehicles. As reliance on these batteries grows, understanding and optimizing their performance becomes critically important. This study explores the effects of external pressure on the efficiency of high-capacity commercial pouch NMC/G […]
CFP-5366
Today, lithium-ion battery production technology is based on a wet electrode manufacturing process. The electrodes’ constituent materials, the active material, an electron conductive material and a polymeric binding material, are mixed together with the use of organic solvents or water in order to create a slurry. The role of the solvent is to relax and […]
CFP-5365
The current global energy crisis further accelerates the world energy transition towards renewable energies. The demand for lithium raw materials, which are used to make batteries, is expected to grow exponentially in the next years, leading to a potential supply shortage.[1] For this reason, much effort has recently been invested in developing technologies for direct […]
CFP-5364
This contribution presents the results of our recent publication [1]. Capacity and internal resistance are key properties of batteries determining energy content and power capability. However, they change over time due to battery aging, hence requiring a reliable diagnosis. We present a novel algorithm (see Figure 1) for estimating the absolute values of capacity and […]
CFP-5363
Currently, lithium ion batteries have been extensively used on electric vehicles and other electronic devices to help the decarbonization strategy. To improve their electrochemical performance, more research has been performed on optimization of their cathode materials1. Lithium transition metal oxides, including Li1+xTM1-xO2, Li2TMO3 and LiTM2O4 materials, are common cathode materials for lithium ion batteries. During […]
CFP-5387
Executive Summary LiNixCoyMn1−x−yO2 (NCM) cathode materials have attracted considerable interest due to their favorable electrochemical properties. NCM cathode materials typically form ultra-dense agglomerates with limited porosity (~5%), raising the question of whether these agglomerates can be treated as solid particles in electrochemical evaluations and battery modeling. In this work, we develop and employ a single-particle […]
CFP-5386
In view of the worldwide efforts to reduce global CO2-emissions, EVs are seen as a climate-friendly alternative to fossil-based propulsion methods. Therefore, the overall share of EVs is expected to rise even more in the nearer future. This very technology however, not only offers advantages and possibilities, but also poses a great danger int the […]