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PräLi – Prelithiation of electrodes

Funded by: BMBF

Contact person : Hans Fenske

Project overview::

The aim of the project consortium is to establish a fully continuous electrochemical process for the prelithiation of electrodes, in which prelithiation is achieved by the reduction of lithium-containing salts in a bath.
In addition, alternative pre-lithiation processes based on the use of metallic lithium as a source are (further) developed. Two production methods are considered, which can also be industrialized as a clocked, semicontinuous process in combination with cost-efficient mini-environments. On the one hand, an electrolytic process with a Li sacrificial electrode for the formation of the SEI is being investigated. On the other hand, a sacrificial layer is applied to the electrode surface using PVD.
All the processes described are evaluated in terms of cell performance and cost-effectiveness.

Objectives and tasks of the iPAT

  • Production of continuous reference material electrodes and C/Si composite anodes as well as physical characterization of the produced electrodes
  • Process engineering investigation and optimization of electrolytic prelithization using a Li sacrificial electrode with focus on the geometric alignment of the electrodes and the selection of optimised current and voltage profiles
  • Electrochemical characterization of prelithified electrodes in pouch cells in comparison to reference systems without prelithiation
  • Identification of upscaling measures for the further development of the method towards an industrially suitable continuous roll-to-roll process
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    Project partners

    TU Braunschweig (Institute of Particle Technology (iPAT), Institute of Joining and Welding Technology (ifs)); MEET Battery Research Center Münster; Helmholtz Institute Münster (HI MS)


    Team Members

    Projects

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

    BaSS – BatterieSicherheitsStandardisierung more

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

    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