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Funding sponsor: BMBF

Contact person : Fabienne Huttner

Abstract of overall project:

The intensive drying of electrodes and separators proceeds directly before the assembly to battery cells. This process step determines the amount of water within the battery cells and influences the electrochemical performance. Within this project, the intensive drying step is investigated to obtain drying kinetics of electrodes and separators. Further, the project aims to develop a recommendation for action for a more efficient process routine. The heating of the components is realized using infrared and conductive heating. The causations of the drying routine and the properties of the electrodes and separators are combined within a quality-property-model, which later will be enhanced with a cost model.

Fig.: Roll-to-roll intensive drying

Objectives and tasks of the iPAT

  • Construction of a continuously working infrared dryer
  • Research on the correlation of water within the battery cell and the electrochemical capacity and life span
  • Influence of drying properties and structural and mechanical properties of electrodes and separators
  • Prevention of rehumidification through ambient conditions
  • Development of a recommendation for action for an efficient process routine for the intensive drying of electrodes and separators

    Project partner

    Karlsruhe Institute of Technology (Institute of Thermal Process Engineering, Thin Film Technology)
    TU Braunschweig (Institute of Joining and Welding)

    Team Members


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    eKoZell – Environmental and Cost Assessment, Model and Communication Management for the Competence Cluster ProZell – Accompanying Project to the ProZell Cluster (eKoZell) moremore

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

    Optimal electrode structure and density by design of mixing and calendering procedures (MiKal) more

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

    ÖkoTroP – Ecologically gentle dry coating of battery electrodes with optimized electrode structure more

    PräLi – Prelithiation of electrodes more

    ProfiStruk – Process and system development for the process integrated inline structuring of Li-electrodes more

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

    Roll-It more

    LiPlanet – Li-ion cell pilot lines network moremore

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

    Sim4Pro- Digitalization Platform – Simulations for battery cell production more

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

    Finished Projects
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    GEENI – Graduate Program for Energy Storage and Electromobility more

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

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

    ProLiEMo – Production Research for High-Power Lithium-Ion Batteries for Electro Mobility  mehr

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

    LithoRec – LithoRec – Recycling of Lithium Ion Batteries mehr