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Simulation

The performance of lithium ion batteries strongly depends on the mechanical properties of the single electrodes. Thereby, not only the properties of the entire electrode have to be considered, but also the behaviour of the single particles.
The discrete element method (DEM) is able to simulate the mechanical behaviour the micrometer-sized particles and is so able to understand processes inside the electrodes which are not or hardly accessible by experiments. The simulation is capable to calculate the mechanical stress caused by volume changing while lithium intercalations, as well as mechanical stress caused by production processes, like calandering or winding of a round-cell. So, individual areas of the electrode can be analysed and predictions of the adhesion of the particles can be made.
Experimental analyses like nanoindentation or adhesion failure tests are made to get the data for a realistic calculation of the behaviour of an electrode. These analytical methods are also simulated with the DEM. Thus a direct comparison between experiment and simulation is possible. Additionally X-Ray scan are made to get a three-dimensional reconstruction of an electrode. This reconstruction is used to simulate realistic structures and particle size distributions.


Team Members

Projects

Cooperative project: Project results database and communication management for the battery cell production cluster ProZell (EMKoZell) more

BaSS – BatterieSicherheitsStandardisierung more

BenchBatt – Process based energy optimization and validation of Lithium-Ion and Lithium-Sulfur battery electrodes more

EVOLi²S – Evaluation of the technical and economic advantages of the open-cell module for lithium-ion and lithium-sulphur batteries with regard to stationary and mobile applications more

MultiDis – Multiscale approach for the description of carbon black deagglomeration in the dispersion process for a process and performance-optimized process control more

Process modeling of the calendering of energy-rich electrodes (ProKal) more

Roll-It more

INSIDER – metal free Dual Ion energy storage technology utilizing anionic -intercalation more

GEENI – Graduate Program for Energy Storage and Electromobility more

LoCoTroP – Low cost dry coating of battery electrodes for energy efficient and environmentally friendly production processes more

LithoRec II more

Academic Initiative for e-Mobility – Education and Training in the University Network MOBIL4e more

Functional Materials and Material Analysis for High Power Lithium-Ion Batteries more

ZiLsicher – Zink-Air-Accumulators as safe electrochemical storage for low emission and explosion proof industrial applications more

Finished Projects

ProLiEMo – Produktionsforschung für Hochleistungs-Lithium-Ionen-Batterien für ElektroMobilität  mehr

LithoRec – Recycling von Lithium-Ionen-Batterien mehr

LiVe – Lithium-Verbundstrukturen mehr