P1-015
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 […]
P5-074
Given the growing use of Lithium-ion batteries (LIBs), the lack of available critical raw materials like e.g. Li, and Co, and recycling issues like ineffective procedures, it is currently only feasible to recover complex battery components through mechanical pre-treatment steps followed by purification via pyrometallurgical or hydrometallurgical methods. However, in mechanical processes at the crushing […]
P1-036
High-energy cathode materials in Li-ion batteries, such as NMCs (LixNiyMnzCo1−y−zO2), are susceptible to surface degradation upon exposure to water, including ambient atmospheric humidity. In humid conditions, NMC materials are prone to lithium loss from their surface structure, leading to the formation of salts such as Li2CO3 and LiOH on the powder’s surface. These salts do […]
P5-064
The conversion of the global energy supply from carbon emitting to renewable sources requires a large amount of energy storage systems being efficient at high energy- and power densities. Many requirements are fulfilled best by Lithium-ion batteries which are prone to thermal runaways leading to fire and severe damage after unusual usage. For some applications, […]
P3-060
Fast charging of lithium-ion batteries requires high current rates, which can lead to unwanted side reactions like metallic lithium deposition (LD). LD accelerates cell aging and causes irreversible capacity loss and should therefore be avoided. To address this challenge, multi-stage constant current (MSCC) charging protocol offers an advanced fast-charging approach that considers battery aging, helping […]
P2-005
Pyro- and hydrometallurgical processes or a combination of both have been widely established so far for the recycling of lithium-ion batteries. However, these methods are harmful for the environment e. g. due to high CO2 emissions. From these two, hydrometallurgy is a selective method to obtain the metals, yet, requires a large amount of chemicals. […]
P5-054
This study comprehensively investigates the swelling behavior and structural changes in a prismatic lithium-ion battery module using CT imaging and in-situ mechanical measurements. To facilitate efficient and accurate segmentation of battery cells within the module, an automated CT image processing algorithm based on computer vision and machine learning was developed. By comparing CT scans taken […]
P2-047
Thermal runaway (TR) safety testing requires comprehensive evaluations at various levels (component tests, cell, module, and system level). Component tests, particularly for fire protection materials, play a crucial role in mitigating the effects of TR events. This research aims to establish comparable alternative methods for representing TR conditions. The effectiveness and comparability of these new […]
P4-006
In view of the new EU Battery Regulation, battery manufacturers will need to adopt their business models to comply with the mandatory minimum recycled material content levels for new battery cells by the end of the decade. According to our research, there are at present no recycled materials on the open market that would fulfill […]
P1-043
The oxide-based garnet LLZO:Ga (Li6.4Ga0,2La3Zr2O12) is a promising solid-state battery electrolyte, offering high ionic conductivity, a wide electrochemical stability window, and lithium metal compatibility. However, upscaling of production requires to address challenges like reproducibility, cost reduction and energy efficiency. This work focuses on two scalable production techniques: Spray drying for synthesizing LLZO:Ga powders with controlled […]