Stationary battery systems
Lectures
Posters
Wet vs dry mechanical recycling process – an outlook for anodic active material recycling
Designing a sustainable production chain for Li-ion batteries (LIBs) represents a crucial step in the energy transition. The challenge of establishing electromobility as a green technology involves developing recycling processes that increase the recirculation of materials. Several industrial LIBs recycling processes reported in the literature combine mechanical, thermal and chemical
Vacuum applications in battery production
Safety concerns and costs of cell failure to battery manufacturers drive the search for reliable test methods to ensure leakage-free battery cells. However, there are currently no standardized test methods used in battery industry to find leaks at cell level. In this study, a series of pouch cells were made
Towards direct recycling of lithium-ion batteries via sustainable and low-energy processes
The rapid growth of the electric vehicle (EV) market is a decisive step towards achieving the global greenhouse gas emissions reduction targets, but will be accompanied by a dramatic increase in the spent battery volume in the future.[1,2] In principle, spent batteries represent a valuable secondary material source that provides
Thermal Fault Detection of Lithium-Ion Battery Packs Through an Integrated Physics and Deep Neural Network Based Model
A variety of faults and failures may occur in a battery pack over time, many of which are hard to determine based on conventional measurements. For example, a blockage in the cooling system would result in higher temperatures, but a fault would typically only be triggered if temperatures exceed a
The importance of Evolved Gas Analysis in the battery testing process
Improving battery performance and safety are among the major challenges in the current battery development process. In order to achieve major progress in these fields, the materials employed in the battery assembly need to be carefully designed, tested and characterized. One of the most difficult tasks that needs to be
The first studies of the impact of calendaring and lamination on full cell electrochemistry with Si@C-anodes
The electric vehicle industry requires batteries with high capacity and power to satisfy the current great market demand. For this reason, there is a great interest in the research and implementation of new materials inside the electrodes, which can improve the final performance of the battery. On the one hand,
State-of-Safety algorithm for Li-ion Batteries based on internal novel sensing technologies
The broader adoption of Li-ion Batteries (LiB) in a wide range of applications (including stationary and mobility ones) is a necessary step ahead to comply with the objectives of the green transition. However, simultaneously, the spread of these systems is increasing the safety requirements, as avoiding devastating events such as
Solid polymer electrolyte degradation products characterized by chromatographic techniques
Solid polymer electrolyte degradation products characterized by chromatographic techniques Jaroslav Miná_1, Yi-Hsuan Chen2, Lukas Herbers1, Martin Winter1,2, Gunther Brunklaus2, Simon-Wiemers Meyer1, Sascha Nowak1 1 University of Münster, MEET Battery Research Center Corrensstraße 46, 48149 Münster 2 Helmholtz-Institute Münster, IEK-12, Forschungszentrum Jülich Corrensstraße 46, 48149 Münster The degradation of lithium-ion battery
Smart digital concept using tracking and tracing system in the electrode production
The market for lithium-ion battery applications has grown tremendously in recent years. Future demand and new application require further reduction of production costs. By integrating digitization concepts into an automated battery cell production line, the overall costs of battery manufacturing can be significantly lowered. To ensure a continuous operation of
Regeneration of NCM811 after separation from the decanter centrifuge
Currently, several processes exist for the recycling of lithium-ion batteries (LIBs). The pyrometallurgical approach, for example, is robust and safe, but the achievable recycling rate is limited, especially with respect to certain elements and starting compounds (or precursors). In contrast, the mechanical approach promises potentially higher recycling rates, but comes
Recycling Strategies for Sulfide-Based All-Solid-State Lithium-Ion Batteries
All-solid-state lithium-ion batteries (ASSBs) are an up-and-coming alternative to conventional lithium-ion batteries with liquid electrolytes. A high potential lies in higher energy densities with high lifetime and long-term stability, avoiding safety hazards such as thermal runaway concerning liquid electrolyte systems. Battery cell concepts with sulfidic electrolytes represent a promising candidate
Quantifying the Dependence of Battery Rate Performance on Common Physical Parameters
Simultaneous optimisation of capacity and rate-performance in battery electrodes would be much simplified by access to a simple equation relating rate-performance to electrode thickness. While a number of equations have been proposed, data on the effect of electrode thickness on rate-performance is not extensive enough to identify the most appropriate
Prospects and limits for quantitative Energy dispersive X-ray spectroscopy (EDS) applied Li Ion batteries
Summary The most commonly used batteries at present and in the near future are Li-ion-based systems. The quantification of Li and limited spatial resolution of EDS analysis are bottlenecks to overcome. There the spectroscopy of low energy x-rays with the windowless Oxford extreme EDS detector open new prospects. We show
Positive Effects of Tab Design in Cylindrical Li-ion Cells – A Systematic Study on Pilot-Scale
Cylindrical cells (18650, 21700) are produced in the order of billions per year worldwide. In these cells, the electrodes are connected to the outer positive and negative connectors via tabs. However, not much is known about the effect of the tabs on cell performance and aging from experiments. The difficulty
Polymeric backbone eutectogel electrolyte: Preparation of a composite positive electrode for high-energy density lithium-ion batteries
The need for sustainable mobility leads to a growth of the market of electric cars. At this moment, lithium-ion batteries (LIBs) are the most suitable technology due to their high gravimetric and volumetric energy density. In all roadmaps for battery development, solid-state batteries are the next step after advanced LIBs.
Performance Benchmarking of Lithium-ion Batteries: The Effect of Test Conditions on the Down-Selection of Cylindrical Cells
One of the most critical steps in designing a Li-ion battery pack is choosing the optimal cell for the application. There is no established scientific process for determining the best cell for a given application. It is acknowledged that thermal boundary conditions and electrical load profiles can greatly affect the
Parameterisation of Electrical and Thermal Models at Module-Level for a Li-Ion Battery Digital Twin Simulation Platform
The monitoring and modelling of the Li-Ion Batteries behaviour is still a major technical challenge due to the non-linearities and coupled phenomena that determine their operation. Deployed Li-Ion Batteries (LIBs) are becoming increasingly large in scale and can consist of hundreds or thousands of individual cells. When these LIBs are
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
Optimization of in-line metrology for electrode coating production lines
Uniformity of the active electrode materials in cell construction is essential to achieve the safety and reliability of the battery in its intended application. Validation of the electrode loading and final dimensions of individual layers by post-production destructive means only sample a small portion of the total electrode sheet. Alternatively,
Optimal Multi-Use Operation of Utility-Scale Battery Systems: Techno-Economic Feasibility Study of the M5BAT Hybrid Storage in Aachen
Large-scale battery storage systems (LSS) have found widespread application in frequency regulation and spot markets across Europe. However, the single-use operation of LSS is typically not economical and depends on fluctuating market prices. Therefore, combined multi-use approaches are necessary to achieve an economically robust operation of LSS and promote their
Novel Multiphysics Model for Advanced Material Solutions for Safer and Long-Lasting High Capacity Cobalt Free Batteries for Stationary Storage Applications (CoFBAT)
To optimize energy storage new battery technologies are required.[1,2] The objective of the CoFBAT European project is to develop a new generation of batteries for storage applications. The goal of the CoFBAT battery technology is to achieve a longer lifetime (up to 10000 cycles), lower costs (down to 0.03 €/kWh/cycle),
Non-invasive application of polymer optical fiber sensors for high fidelity operando monitoring of strain and temperature in Li-ion batteries
Successful assessment of the battery degradation mechanism and safety conditions may be enabled through monitoring dynamic thermal, chemical, and mechanical status of a cell during cycling. In this regard, the convergence of fiber optic sensing with lithium-ion batteries holds great promise for observing key cell parameters in real time, allowing
Neural network architecture for determining the aging of stationary storage systems in decentralized energy systems
Modellierung der Alterung von Li-Ionen Zellen mittels neuronaler Netze für stationäre Anwendungen in dezentralen Energiesystemen Ein neuronales Netzwerk wird entwickelt, um die Alterung von Lithium-Ionen-Zellen zu modellieren. Betriebsdaten aus einem Batterietest mit mehreren LFP-Zellen werden verwendet um Zusammenhänge zwischen Kapazität, Strom und Spannung zu ermitteln. Speziell für die Nutzung in
Modelling solvent transport in lithium-ion batteries
Liquid electrolytes in commercial lithium-ion batteries (LIBs) normally consist of more than two solvents to balance multiple requirements such as high ionic conductivity and low solution viscosity (A. Wang, et al., Cell Reports Physical Science, vol. 3, no. 9, 2022). However, only one solvent is considered in the widely used
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
Modelling and analysis of the Coulomb Counting SOC Estimation method for 18650 Li-ion batteries under varying charge-discharge protocols
Modelling and analysis of the Coulomb Counting SOC Estimation method for 18650 Li-ion batteries under varying charge-discharge protocols Hossein Nemati Bandkohan1, Patrick C. Howlett1 1 Institute for Frontier Materials, Deakin University, Burwood, Victoria 3125, Australia Abstract Among the various types of batteries, lithium-ion batteries (LIBs) are currently considered the most
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
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
Methodology for the quantitative assessment and comparison of fault detection approaches at lithium-ion batteries with special consideration of internal short circuits
Methodology for the quantitative assessment and comparison of fault detection approaches at lithium-ion batteries with special consideration of internal short circuits With the strong growth of lithium-ion battery applications in recent years, the corresponding safety problems have also come into focus. Therefore, numerous papers have been published in the past
Mechanically refuellable zinc-air battery: A safe and sustainable alternative for large-scale, long-duration energy storage
P4-029-Akhil Kongara Rising concerns over global warming have motivated scientists to explore various clean energy generation options. In this quest for clean energy generation, renewables like solar and wind have gained significant traction and have seen a tremendous increase in energy generation from these sources over the last decade. However,
Large-scale simulation of Li-ion battery systems for grid storage
Grid-scale lithium-ion batteries are becoming an increasingly integral part of our modern power system to support the proliferation of renewable energy sources. However, though rapidly declining prices and improving capabilities, they continue to remain as a significant portion of investment. Thus, their optimised operation is essential for increasing their economic
Is the ‘single-crystal’ approach really feasible for Ni-rich layered oxides? – A fair and realistic performance comparison in NCM||Graphite coin cells
Is the ‘single-crystal’ approach really feasible for Ni-rich layered oxides? – A fair and realistic performance comparison in NCM||Graphite coin cells Secondary particle cracking induced by anisotropic volume change during cycling has been identified as a major failure mechanism of state-of-the-art Ni-rich layered oxide cathodes like Li[NixCoyMnz]O2 (x + y
Investigations on the improvement of the cycling behavior of lithium metal electrodes in combination with slurry-based sulfdic electrolyte layers
Sulfide solid electrolytes, such as Lithium Phosphorus Sulfide _-Li3PS4(LPS), show promising results in all solid-state battery research due to higher lithium-ion conductivity compared to solid ceramic electrolytes. Current research is trying to cope with different challenges with sulfidic electrolytes, among them: The use of a lithium (Li) metal anode to
Investigation of the influence of different aging stresses on the heat generation of an NMC Li-Ion battery
Thermal models get more and more important for the performance of battery systems within vehicle applications. Knowing how temperature and heat of the cells and assembled systems are evolving, can decrease the potential limitations. It leads to a more constant performance. The thermal behavior is not only dependent to actual
Investigation of safety-related parameters of aged Li-ion batteries for the use in second life applications
Understanding the safety characteristics of aged Li-ion batteries is essential for their effective integration into second-life applications. The SafeLiBatt project is a research initiative focused on evaluating the safety-related parameters of these batteries. The presented study elucidates the impact of a battery’s state of health (SOH) on its safety behavior.
Investigation of impedance spectra of systems with distinctive resistive-inductive behavior using the generalized distribution of relaxation times analysis
The distribution of relaxation (DRT) times is a well-established method for the characterization and process identification of electrochemical systems in the frequency domain. In measured impedance spectra, it is in general a very challenging task to reliably extract system characteristics, to identify processes, and to evaluate the impact of operational
Investigating the intrinsic properties of cathode active material for Li-ion cells by combining single particle measurements with simulations
A detailed understanding of the intrinsic electrochemical properties of cathode active material is imperative for improving current and developing next-generation Li-ion batteries (LIBs). Conventional methods of electrochemical analysis of novel or optimized active materials involve the study of composite electrodes which contain a mixture of active material, binder, and conductive
Interplay of Pressure and Electrolyte on the (Ir)Reversible Expansion of State-of-the-Art and Next-Generation Battery Materials using Operando Dilatometry
In this work, the correlation between mechanical pressure on the cell and volume expansion is studied for state-of-the-art (SoA) and next generation materials for lithium-ion batteries. The effect of volume changes, primarily of the anode, on the electrochemical processes occurring within the cell is investigated using a custom-built operando dilatometry
Interface design for positive active material LiNi0.6Mn0.2Co0.2O2 via Al2O3-coatings using magnetron sputtering for improved electrochemical performance and safety properties.
Layered transition metal oxides received a lot of attention as positive active material for lithium ion batteries (LIBs) because of high specific capacity, low cost and relatively high operating potential. However, LiNixMnyCozO2-type materials (NMC, x+y+z=1) still face a lot of challenges: 1) Moisture uptake and formation of impurities at the
Innovative multi-domain modeling approach for future battery architectures
Lithium-Ion batteries represent the current standard of energy storage systems in mobile and stationary applications. Different requirements for a wide range of applications challenge the product development due to the high diversity of technologies and components. Fast changing properties of battery cell and system components lead to a demand for
Infrared-drying for Li-Ion battery production: Effects on the electrode´s characteristics
Infrared-drying is an innovative technology in the Li-Ion battery manufacturing [1]. Since drying is the most energy intensive process step [2], new technologies have to be discovered in order to reduce costs and material sources. One solution is the addition of an IR-module. The aim of this study is the
Influence of temperature dependent aging mechanism on the safety behavior of Li-ion pouch cells
Compared to many other characteristics of Li-ion batteries, the safety behavior is a critical property and should be examined carefully. However, the safety behavior can drastically change dependent on the prior aging conditions such as ambient temperature [1-4]. The temperature dependent aging behavior of commercial pouch cells is evaluated using
Influence of process conditions on direct and aqueous recycling of high nickel rich cathodes
With the increasing popularity of lithium ion batteries comes a corresponding increase in the number of aging batteries that will require recycling in the future. Direct recycling has the advantage of remaining the cathode material structure over other recycling methods (e.g. pyrometallurgy and hydrometallurgy) [1]. However, the technology readiness level
Inductive drying of lithium ion NMC622 cathodes
To match the steadily increasing demand of lithium-ion batteries all battery production steps have to be enhanced in terms of quality and performance. In this regard, the drying process of electrodes holds great potential for improvement. The main challenge of state-of-the-art convective drying methods is the high energy consumption within
Increasing the safety of lithium-ion cells through pressure-controlled gas removal
Lithium-ion cells can release significant amounts of energy in the case of mishandling or production defects. This leads to the development of high pressure and very high temperature inside the cell followed with release of toxic, explosive and flammable gases, usually known as Thermal Runaway (TR). The impact of a
In-Situ Visualization of Electrode Layers in Lithium-Ion Cells with Scanning Acoustic Tomography
Imaging the interior of battery cells provides vital information for battery manufacturing, as well as lifetime and performance prediction. We demonstrate a scalable and in-situ method to image the structural state of battery cells with layer resolution. Ultrasound waves are applied on pouch cells and the reflected wave is processed
In-operando monitoring of internal pressure in lithium-ion batteries
In-operando monitoring of the internal pressure in lithium-ion cells allows to study the correlation of thermodynamic parameters with the commonly studied electric parameters in grahite/LFP lithium-ion battery cells. From the comparison of stored charge, incremental capacity peak intensity and position and state of health against pressure it was revealed that
In-depth insights into the impact of FEC on lithium metal electrodes by the utilization of an uncontaminated preformed SEI
The rising demand for high-performance energy storage solutions has led to a revival of the lithium metal battery (LMB), due to the beneficial synergistic properties of lithium metal with a high specific capacity (3860 mAh/g) and the lowest reduction potential (-3.04 V vs. standard hydrogen electrode (SHE)). “;“The viability of lithium
Impurity particle contamination in lithium-ion batteries – a risk for safety-critical internal short circuits
A possible contamination with impurities in the cell production of lithium-ion batteries increases the risk of spontaneous internal short circuits (ISC), so that these faults are especially feared. Since detection of ISC in time for warning and effective countermeasures is difficult the safety risk is also increased. Various trigger methods
Improving Lithium-ion Battery Safety with Early Thermal Runaway Diagnosis via EIS and Gas sensors
The increase of Electric Vehicles (EV) in the market, and therefore, the increase of isolated Thermal Runaway events has highlighted the need for measures to be taken in this matter, in response to the safety concerns among the industry and society. A Thermal Runaway event can happen over a certain
Impact of the Compression Ratio due to Calendering on the Effective Thermal Conductivity of Lithium-Ion Cell Electrodes
During the design process of lithium-ion batteries the simultaneous optimization of the mechanical, electrical and thermal properties of the components and their interfaces is crucial. As these are strongly influenced by the production steps, a thorough understanding of their impact on said properties is key to reaching optimized material properties
Impact of In Coin Cell Atmosphere on Lithium Metal Electrode Performance
Research on lithium metal as a high-capacity anode for future lithium metal batteries (LMBs) is currently at an all-time high. To date, the different influences of a highly pure argon glovebox (GB) and an industry-relevant ambient dry room (DR) atmosphere have received little attention in the scientific community. In this
Hybrid modelling of Lithium-ion batteries: Proof of concept for application of Physics-informed Neural Network in Electrochemical Battery Modelling
Abstract Accurately forecasting lithium-ion batteries‘ lifetime and degradation mechanisms are crucial for their optimization and management. An accurate state of health estimation is essential for ensuring safety and preventing latent failures. However, complex and dynamic cell parameters and wide variations in usage conditions make the state of health prediction challenging.
How are Different Metal Oxalates Influencing Li-Ion-Batteries?
Recycling of the large return volumes of lithium-ion batteries with environmental and economic impact is mandatory. But recycling releases impurities: Not only during crushing but also during leaching, impurities can be introduced and found in the recycled material. These can have a significant impact on performance (lifetime, capacity, …). For
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
High valence dopants in nickel-rich battery materials: Where do they go and what do they do?
Selecting and optimizing a cathode active material (CAM) is a crucial step in the layout of a battery when it comes to mass production. Therefore, a fundamental understanding of the impact of each element on the overall chemical compound is needed. Here, we focus on the establishment of a descriptor
Generic Energy Flow Model for application in optimized combined operation of a Battery Energy Storage System and an Electrolyzer
The research project “ZET Reallabor Wunsiedel” collects data from different power plants at Wunsiedel energy park. The main goal of the project is to find a suitable strategy for the combined economical operation of an electrolyzer and a battery energy storage system (BESS). This optimization is achieved by a dynamic
Flexible pilot lines as enabler for accelerated, safe and efficient scaling of battery cell production
The global mobility revolution is gaining steam. As a result, the demand for sustainable and economically viable batteries for electric cars continues to grow. Therefore, the production infrastructure for battery cells must be scaled rapidly, but at the same time be engineered to be sustainable and efficient. The accelerated implementation
Fibre optic sensor options for the assessment of lithium-ion pouch cell degradation and safety
The implementation of safer, high-energy-density lithium-ion batteries remains a societal concern. A mandatory criterion for the development of the worst-case scenario, the thermal runaway of the battery cell, is an increased local heat generation to activate the disastrous exothermic chain reaction. The associated degradation reactions lead to higher temperatures and
Failure Modes and Effects Analysis used for the identification of critical loads applied to second-life mobile and stationary applications
The use of Lithium-ion batteries in second-life applications is becoming increasingly widespread. A battery extracted from an electric vehicle can be used in a wide range of applications, both stationary (e.g. energy storage system connected to a renewable energy source) and mobile (e.g. warehouse´s industrial vehicle). In order to ensure
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
Extending the Single Particle Model using Method of Lines
In the past years, many reduced order electrochemical models for Lithium-ion batteries have been presented. One of the most popular being the Single Particle Model (SPM), that is derived from the full order Doyle-Fuller-Newman Model (DFN). Moreover, several different numerical solving approaches have been proposed, to enhance either the modelling
Evaluating operating strategies of large-scale industrial battery storage – A case study of a glassworks site
The industry sector largely contributes to greenhouse gas emissions. Yet only a few measures were taken in the last decade to significantly reduce those emissions. However, different industry players have recently implemented steps to decarbonize their operations by switching from fossil fuels to renewable energy sources. This goes along with
European Battery Supply Chain – From Raw Materials to Cell Production
The rapid build-up of cell manufacturing capacity in Europe and elsewhere in the world has created new dependencies and shortages in material supply. In order to get an overview over the current situation in Europe, the authors tracked relevant production sites for the Lithium-Ion-Battery industry. Based on our tracking, we
Energy Storage using Zinc-Air Batteries
Energy Storage using Zinc-Air Batteries Battery technology is becoming more and more important for different reasons. Some examples are electric cars and buffer storage of regenerative energy. Zinc-air batteries are very promising candidates because of their high energy density and good recyclability. However, the lower power density compared to lithium-ion
Empirical modeling of degradation mode evolution during lithium-ion battery aging
Lithium-ion battery degradation leads to the fade of capacity and power capability over lifetime. Thus, degradation is a key concern during the design of lithium-ion batteries and lithium-ion battery systems. To estimate the effect of battery degradation during the design process, lithium-ion battery aging models are employed. These models are
Electrochemical Noise Analysis applied to new generation Li-ion batteries
Electrochemical Noise Analysis applied to new generation Li-ion batteries This work aims to assess the possibility for Electrochemical Noise Analysis (ENA) to be used as a diagnosis method for new generation Li-ion cells (LNMO, LTO, TNO). Since it is only based on electrical fluctuations (so called “noise”) generated by the
Direct Observations of Graphite Anode Lithiation and Internal Short Circuits by Li Metal Deposition using Cross-Sectional in situ Optical Microscopy in Li-Ion Full Cells
The anode is the rate-limiting compound during fast-charging of Li-ion batteries, due to the reduced mass transport through the electrode.1 Lithiation gradients within the anode build-up, leading to a higher state-of-charge at the surface of the anode, which favors Li metal deposition at these spots.2 Since graphite anodes undergo a
Development of a data transparency platform for sustainable battery material value chains
As the production of batteries for electromobility has a significant environmental impact, the European Union is currently developing a new Battery Regulation. It is expected that a declaration of the carbon footprint of batteries will be mandatory within the EU from July 2024 on. Thus, a data platform including also
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
Determinants of Ramp-up Management in Battery cell Factories
In recent years, the number of announced battery cell gigafactories in Europe is increasing with a rapid pace. Both new entrants and incumbent firms are among the players who are planning and discussing their high outputs of Lithium-Ion battery cells in the near future. However, either the copy exactly strategy
Detection of inhomogeneities in serially connected lithium-ion battery packs
Serially connected battery packs present a cell-to-cell variation in their electrochemical behavior due to deviations during production, different temperature distributions or mechanical stress that tends to increase over the lifetime. This can lead to individual cells having significantly different electrical properties than the cell group, described in this work as
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
Deciphering Li deposition and SEI with cryo-TEM & cryo-ET
Understanding in detail the behaviour of Li deposition and SEI formation is crucial for the rational design of stable Li metal anodes, but has remained tremendously challenging due to the extremely high sensitivity of metallic Li. [1] To address this issue, cryogenic electron microscopy (cryo-EM) has in recent years emerged
Data-assisted vacuum crushing and drying of end-of-life batteries
Data-assisted vacuum crushing and drying of end-of-life batteries Closing material loops is essential for sustainable electric mobility, for example, to ensure the supply of battery materials. Therefore, efficient recycling systems are needed, which maximize the output quantity and quality while minimizing the associated costs and environmental impacts [1]. A common
Data to Value in the Recycling of Lithium-Ion Batteries
Batteries are highly integrated products composed of mixed materials that are highly affected by energy-intensive production and processing, security of supply, and raw material criticality. Due to the energy-intensive production and processing of battery raw materials, valuable materials with high qualities are concentrated in batteries. With the steadily increasing demand
Cost and performance analysis as a valuable tool for battery research: the case of the optimization of the low cut-off voltage of sodium-ion battery cells
The widespread use of lithium-ion batteries for renewable energy storage and electromobility is enabling our society to shift from a carbon-based economy to a more sustainable one. However, issues in the supply of the critical materials required for their production could harm the deployment of the necessary battery capacity. An
Contactless cell opening of lithium-ion pouch cells and reuse of pouch foil within the direct recycling approach
The current developments on the European level in terms of creating a circular economy in the electromobility sector not only require highly efficient and long-lasting battery technologies but also efficient recycling technologies.[1]In the case of lithium-ion batteries (LIBs), the focus should thereby not only be set on the highest commercial
Comprehensive thermal analysis of surface films formed on lithium ion battery negative electrodes
Poster Abstract Advanced Battery Power Conference 2023 Comprehensive thermal analysis of surface films formed on lithium ion battery negative electrodes Dennis Kessena,*, Christoph Peschela, Tautvydas Bieliauskasa, Martin Wintera,b, Sascha Nowaka, Simon Wiemers-Meyera a University of Münster, MEET Battery Research Center, Corrensstraße 46, 48149 Münster, Germany b Helmholtz-Institute Münster, IEK-12, FZ
Characterization of Na-S Battery System Using X-ray Absorption Spectroscopy
In recent years, energy storage has become one of the worldwide “;“concerns with increasing need for the energy. In terms of meeting the “;“increasing energy need, the developed electrochemical devices “;“attracted great attention. Besides in progress researches on Li-ion “;“batteries, the batteries with lower cost and higher efficiency have “;“been investigated. Due to the increasing
Challenges of next-generation battery energy storage systems with silicon anodes
Silicon is a promising next-generation active material to largely replace graphite as the anode in lithium-ion batteries. The very high specific capacity of up to 3600 mAh/g [1, 2] in combination with low potentials vs. Li/Li+ leads to cells with extraordinarily high energy density. The challenge of the commercialization of
Can fusing Li-ion cell impedance in BMS algorithms lead to further optimization of next generation EV battery system?
In addition to the costs, range anxiety and fast-charging capability, the safety of Li-ion batteries (LIBs) is most important. In the proposed conference contribution, we introduce the practical application use cases of Electrochemical Impedance Spectroscopy (EIS) in electric vehicles (EVs) and how EIS can further complement the current BMS data
Battery tracking using blockchain-based platforms
Blockchain technology has been recognized as one of the most promising technologies in industrial applications. There are a variety of possible applications such as supply chain tracking, creating digital twins, digital platforms for battery swapping, tokenization and a focus on the second life and recycling market. This research proposes a
Battery right sizing for commercial vehicles
Battery right sizing for commercial vehicles Marco Kachler, Borg Warner Stuttgart GmbH Jan Neunzling BorgWarner Akasol GmbH Anita Bongards, BorgWarner Stuttgart GmbH Abstract In 2015 the Paris Agreement on climate change was adopted. Its goal is to limit global warming by reducing the emission of greenhouse gases like CO2. As
Balancing accuracy and complexity when selecting battery models to fit data
This talk raises the challenge of selecting battery models to fit the experimental data and provides a solution. We find that popular metrics to evaluate the model fit, such as root-mean-square error and Bayesian information criterion, can lead to incorrect model selection. We study the possible causes of this using
Automated data management in R&D cell production
Batalyse is a software system to automate time consuming manual data processing like file gathering, categorization and evaluation for R&D, production and QM. Sort and filter your test, analysis and production data for specific materials, projects, customers and performance. Link material properties, with production parameters and product performance, receive structured
Artificial solid-electrolyte-interphase layer on silicon/graphite anode formed by atomic layer deposited ZnO films
Operation of Li-ion batteries is based on an insertion of Li ions in layered materials. Intercalation of Li into the graphite anode takes part during charging, while Li-ions are stored in the layered cathode materials during discharging. Graphite anode: intercalation of Li, excellent cycling performance, but low specific energy capacity
Aqueous based cathodes with LiPAA-Alginate blended binder
Li-ion batteries are one of the most advanced energy storage systems and provide one of the highest energy densities for secondary batteries, long cycle life, and good power capacity. The main solvent for PVdF binders used today for cathode production is NMP, an organic solvent which is expensive, volatile, toxic,
Analyzing the impact of different formation strategies on large-scale format Li-ion battery cells
The formation of Li-ion batteries after production is essential for safe and reliable cell operation, however it is one of the most time-consuming and cost-intensive steps in the entire battery cell manufacturing chain. Optimized formation strategies contribute significantly to battery safety, lifetime and reliability. Forming of a high quality, homogeneous
Analysis of Thermal Management Systems for Electric Mo-bility Applications: Meeting the Needs of Future Trends
Abstract: The global shift towards electric mobility requires a comprehensive transformation of the transportation sector. One of the main components of electric powertrains is the battery and its associated systems, which must meet a wide range of needs in terms of different scenarios of application. One of the major challenges
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
Aging Diagnostics of Lithium-ion Batteries using Machine Learning and real Vehicle Fleet Data
MOTIVATION Most approaches for predicting the SOH under a wide range of conditions have one common drawback: They rely on bench testing, which is tedious and time-consuming, cell-specific and expensive. This rarely reflects the actual usage behavior, a crucial factor in battery aging. Instead, our approach uses real driving data.
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
A two layer silicon/graphite anode for higher energy density Li-ion cells
Silicon is a promising anode material for Lithium-ion batteries (LiBs), offering much higher storage capacity than graphite. However, the main challenge of the usage of silicon, as an anode material in LiBs, is mainly linked to its property of huge volume change during cycling, which leads to internal tension that
A modified Doyle-Fuller-Newman model for the physical simulation of dual-ion batteries
Lithium-ion batteries are the currently dominant electrochemical energy storage technology, but the forecasted battery demand and the uncertainty on the supply of raw materials for their production call for the search of alternatives and complementary solutions. “;“In the variety of proposals along this direction, dual-ion batteries are characterized by the involvement
A Hierarchical Database Schema with High-Level Indicators for Recycling Processes of Lithium-ion Batteries
The presence of strategic metals and critical raw materials in spent LIB makes recycling this material stream an essential topic for industry, academics and society. Current developments in recycling technology are leading to generating a substantial amount of process data from diverse recycling strategies for LIBs. However, large amounts of
A comparison between physics-based Li-ion battery models
Physics-based electrochemical battery models are widely used as powerful tools for simulating lithium-ion battery behavior and for providing an understanding of the internal physical and electrochemical processes. However, due to their complexity and high computational demand, these models may not be feasible for battery management systems (BMS) and long-term aging