An Alternative Binder System for Improving the Fast-Charging Capability of Water-based Lithium-Ion Battery Graphite Anodes
Fast to ultra-fast charging times for battery electric vehicles are becoming of more and more interest, especially for car owners without own charging capabilities at home. From a technical point of view, it is important to offer short charging times without negatively affecting the lifetime and aging of the used lithium-ion battery (LIB).1–3 High charging […]
Fabrication of thin Li6PS5Cl separators for all-solid-state lithium-ion batteries
Thin Argyrodite Separators for All-Solid-State Lithium-Ion-Batteries Thin sulfide separators (<“;“30µm) for all-solid-state lithium-ion batteries are crucial to obtain low internal battery-cell resistances, i.e. good battery-cell performances, and high energy densities. A two-dimensional sulfide separator sheet consists commonly of sulfide powder and a polymeric binder. The components are dispersed in a solvent and casted to a […]
Methods of novelty nanocarbon anodic material synthesis for long cycle life ultra-fast charge batteries
Nanocarbon, or nC [1], is an innovative material that shows great promise as an anode for batteries. With its unique properties, nC allows for a significant increase in the C-rate of batteries, which means that they can charge and discharge more quickly than traditional batteries. Furthermore, nC does not degrade over time, even with a […]
Aging Behaviour of Ni-rich Li-Ion Battery Material in Winter- and Summer-Like Humid Atmosphere
In recent years, Ni-rich cathode active materials (CAMs) with Ni contents above 80% have gained great importance and are already used in automotive Lithium batteries, such in e.g. Mercedes EQS and EQE models. However, the higher the Ni content in the CAM, the more sensitive it is to water resulting in a high reactivity even […]
Degradation-cost-aware scheduling of electric vehicle charging and discharging
Abstract Lithium-ion battery degradation is strongly dependent on operating conditions. Battery degradation imposes costs on electric vehicle owners. To ensure economically viable participation in vehicle-to-grid schemes, the cost of battery degradation due to battery cycling for this purpose has to be taken into account. Cycle depth is one crucial stress factor for battery operation according […]
Modelling inhomogeneous lithium plating with a distributed equivalent circuit network
In lithium-ion batteries, lithium metal plating on graphite electrodes can be a significant problem. The metal can form dendrites that go through the separator and cause a short circuit, creating a safety hazard. Some of the plated lithium cannot be recovered and is permanently lost, reducing the capacity of the battery. Many models of lithium […]
High-throughput in battery material research – a case study for cathode active materials
Material development on pilot or production scale is restricted by material availability, space and device capacity and cost. A common strategy to increase sample numbers and to enable parameter screening is a combination of miniaturization, parallelization, automation and digitalization. We will present a cathode materials R&D workflow that increases the number of parameters and materials […]
Determination of Parasitic Reactions and Lithium Plating in Real Time
Determination of Parasitic Reactions and Lithium Plating in Real Time Parasitic reactions are a severe thread to batteries that determine their life time and performance, thus, a reliable judgement of parasitic reactions is crucial for an efficient and sustainable development of new batteries. Even better if it is quick and easy to access ! TA […]
Model-based Predictive Maintenance for Li-Ion Battery Systems – Model Design and Experimental Data Generation
Methods of predictive maintenance for large-scale battery systems allow the early detection of fault potentials and the consequent replacement or repair of faulty components before severe compromises to system health, safety or performance must be made. While numerable methods exist for the detection of short-term faults such as thermal runaways or low-ohmic short circuits, predicting […]
Optimized synthesis of cyclic fluorinated sulfonylimide lithium salts to suppress aluminum corrosion in lithium-ion batteries
LiCTFSI, lithium 4,4,5,5-tetrafluoro-1,3,2-dithiazolidine-1,1,3,3-tetraoxide, is a promising lithium salt for the usage in lithium-ion battery electrolytes, because it does not “;“cause corrosion of the aluminum current collector below 5.0 V vs. Li/Li+ [1]. LiCTFSI can be synthesized in three steps, including Kolbe electrolysis, using 2,2-difluoro-2-(fluorosulfonyl)acetic acid as raw material. Kolbe electrolysis of 2,2-difluoro-2-(fluorosulfonyl)acetic acid can shorten a […]