TFT TFT

M.Sc. Alexander Hoffmann

  • Thin Film Technology (TFT)

    KIT Campus Süd

    Materialwissenschaftliches Zentrum für Energiesysteme (MZE)
    Straße am Forum 7

    Gebäude 30.48
    D-76131 Karlsruhe

     

    KIT Campus Nord

    KIT-Hightech-Inkubator
    Hermann-von-Helmholtz-Platz 1

    Gebäude 717
    D-76344 Eggenstein-Leopoldshafen

     

Forschungsschwerpunkte

Battery Processing: Coating  I  Process Simulation

Studentische Arbeiten
Titel Forschungsthema Bearbeiter Datum
Battery Processing - Coating Kriterien für die Entstehung von Durchmischungen bei der simultanen Mehrlagenbeschichtung für Lithium-Ionen-Batterieelektroden Malte Haupt abgeschlossen 11/2024
Battery Processing Analyse der Prozessgrenzen für simultane Mehrlagenbeschichtungen ohne Durchmischung Benedikt Regelmann abgeschlossen 04/2024
Lithium-Ionen-Batterien / Beschichtung Untersuchung des Einflusses von rheologischen Fluideigenschaften auf die Prozessstabilität von simultanen Mehrlagenbeschichtungen (für Li-Ionen-Batterie-Elektroden) Özge Karaagac abgeschlossen 09/2022
Lithium-Ionen-Batterien Untersuchung der Strukturoptimierung und der Beschichtungsstabilität von mehrlagigen Elektroden für Li-Ionen-Batterien David Backes abgeschlossen 04/2022
Studentische Hilfskraft
Titel Forschungsthema Bearbeitung Datum
Lithium-Ionen-Batterien / Beschichtung / CFD-Simulation Die Inhalte aus den Angeboten zu den Abschlussarbeiten lassen sich auch im Rahmen einer HiWi-Stelle bearbeiten. zu vergeben ab sofort

Awards

  1. Best Poster Award (ISCST 2024).

  2. Best Poster Award (ECS 2023).

  3. Best Poster Award (IBPC 2022).

  4. 3rd best Poster at the ECS 2021.

Publications

  1. A. Hoffmann; Hoffmann; A.; Klemens; J.; et al.; Scharfer; Schabel,
    Optimized battery electrodes with primer layers by simultaneous two-layer slot-die coating. The European Physical Journal Special Topics 2024, ,
    DOI: 10.1140/epjs/s11734-024-01398-7

  2. D. Burger; Burger; D.; Keim; N.; Shabbir; J.; Gao; Y.; Müller; M.; Bauer; W.; Hoffmann; A.; Scharfer; P. and Schabel; W.,
    Simultaneous Primer Coating for Fast Drying of Battery Electrodes. Energy Technology 2024, ,
    DOI: 10.1002/ente.202401668

  3. F. Denk; Denk F.; Hoffmann A.; Höger K.; Pfrommer J.; Poyer M.; Scharfer P.; Spiegel S.; Fleischer J.; Lanza G.; Schabel W.,
    Development of an Autonomous Electrode Coating [Entwicklung einer autonomen Elektrodenbeschichtung]. Zeitschrift Kunststofftechnik / Journal of Plastics Technology 2022, ,
    DOI: 10.1515/zwf-2022-1128

  4. F. Denk; F. Denk; S. Schabel; A. Hoffmann; P. Scharfer; W. Schabel; J. Fleischer,
    Autonomous control of gap distance and angel of attack in slot-die coating. Procedia CIRP 2024, ,
    DOI: 10.1016/j.procir.2023.09.240

  5. S. Spiegel; Spiegel; S.; Hoffmann; A.; Klemens; J. et al.,
    High-speed slot-die coating of primer layers for Li-ion battery electrodes: model calculations and experimental validation of the extended coating window depending on coating speed, coating gap and viscosity. Journal of Coatings Technology and Research 2024, ,
    DOI: 10.1007/s11998-023-00877-1

  6. S. Spiegel; Spiegel; S.; Hoffmann; A.; Klemens; J.; Scharfer; P. and Schabel; W.,
    Optimization of Edge Quality in the Slot-Die Coating Process of High-Capacity Lithium-Ion Battery Electrodes. Energy Technology 2023, ,
    DOI: 10.1002/ente.202200684

  7. Alexander Hoffmann; Alexander Hoffmann; Sandro Spiegel; Thilo Heckmann; Philip Scharfer; Wilhelm Schabel,
    CFD model of slot die coating for lithium-ion battery electrodes in 2D and 3D with load balanced dynamic mesh refinement enabled with a local-slip boundary condition in OpenFOAM. Journal of Coatings Technology and Research 2022, ,
    DOI: 10.1007/s11998-022-00660-8

Presentations and Talks

  1. A. Hoffmann; A. Hoffmann; P. Scharfer; W. Schabel,
    Double-Sided Slot-Die Coating of Battery Electrodes: Modeling, Predictions and Simulations for Inline Process Control (Poster),
    ISCST 2026, 2026, Minneapolis, Minnesota, USA

  2. A. Hoffmann; A. Hoffmann; P. Scharfer; W. Schabel,
    Double-sided coating of battery electrodes (Talk),
    ISCST 2026, 2026, Minneapolis, Minnesota, USA

  3. A. Hoffmann; A. Hoffmann; P. Scharfer; W. Schabel,
    Double-sided coating of battery electrodes (Talk),
    TFT Forum 2026, 2026, Karlsruhe, Germany

  4. A. Hoffmann; A. Hoffmann; P. Scharfer; W. Schabel,
    Stability of coating flows in two-layer slot dies (Talk),
    TFT Short Course 2026, 2026, Karlsruhe, Germany

  5. A. Hoffmann; A. Hoffmann; P. Scharfer; W. Schabel,
    Challenges and current goals in slot-die coating of battery electrodes (Poster),
    IBPC 2025, 2025, Braunschweig, Germany

  6. A. Hoffmann; A. Hoffmann; P. Scharfer; W. Schabel,
    High-speed and intermittent battery electrode coatings (Talk),
    TFT Forum 2025, 2025, Karlsruhe, Germany

  7. A. Hoffmann; A. Hoffmann; P. Scharfer; W. Schabel,
    Stability of coating flows in two-layer slot dies (Talk),
    TFT Short Course 2025, 2025, Karlsruhe, Germany

  8. A. Hoffmann; A. Hoffmann; P. Scharfer; W. Schabel,
    Slot-die coating of single- and multilayer battery electrodes (Poster),
    AABC 2025, 2025, Mainz, Germany

  9. A. Hoffmann; A. Hoffmann; P. Scharfer; W. Schabel,
    Predictive modeling and experimental study of bead stability in two-layer slot-die coating of battery electrodes (Poster),
    ISCST 2024, 2024, Atlanta, Georgia, USA

  10. A. Hoffmann; A. Hoffmann; P. Scharfer; W. Schabel,
    Simultaneous multilayer coating for battery electrodes and numerical simulations with model material systems (Talk),
    ISCST 2024, 2024, Atlanta, Georgia, USA

  11. A. Hoffmann; A. Hoffmann; P. Scharfer; W. Schabel,
    High-speed and intermittent battery electrode coatings (Talk),
    TFT Forum 2024, 2024, Karlsruhe, Germany

  12. A. Hoffmann; A. Hoffmann; P. Scharfer; W. Schabel,
    Stability of coating flows in two-layer slot dies (Talk),
    TFT Short Course 2024, 2024, Karlsruhe, Germany

  13. A. Hoffmann; A. Hoffmann; P. Scharfer; W. Schabel,
    Experimental study and numerical prediction of coating defects in multilayer slot-die coating of battery electrodes (Poster),
    IBPC 2023, 2023, Braunschweig, Germany

  14. A. Hoffmann; A. Hoffmann; P. Scharfer; W. Schabel,
    CFD simulation of slot-die coating for single- and multilayered lithium-ion battery electrodes in OpenFOAM (Poster),
    ECS 2023, 2023, Paris, France

  15. A. Hoffmann; A. Hoffmann; P. Scharfer; W. Schabel,
    Simultaneous multilayer coating for battery electrodes and numerical simulations with model material systems (Talk),
    ECS 2023, 2023, Paris, France

  16. A. Hoffmann; A. Hoffmann; P. Scharfer; W. Schabel,
    Flow fields in single- and multilayer coating (Talk),
    TFT Short Course 2023, 2023, Karlsruhe, Germany

  17. A. Hoffmann; A. Hoffmann; P. Scharfer; W. Schabel,
    High-Speed slot-die coating and extended coating window (Talk),
    TFT Short Course 2023, 2023, Karlsruhe, Germany

  18. A. Hoffmann; A. Hoffmann; P. Scharfer; W. Schabel,
    Stability of multilayer electrode coatings with different properties of the layers (Poster),
    IBPC 2022, 2022, Braunschweig, Germany

  19. S. Spiegel; S. Spiegel; A. Hoffmann; P. Scharfer; W. Schabel,
    Recent Advances in Battery-Electrode Coating and Experimental and Simulative Edge Formation Aspects (Poster),
    Batterieforum 2022, 2022, Berlin, Germany

  20. A. Hoffmann; A. Hoffmann; S. Spiegel; D. Burger; J. Klemens; P. Scharfer; W. Schabel,
    About the slot die coating process of lithium-ion battery electrodes with regard to an optimized layer structure and edge quality (Poster),
    Dechema Jahrestagung 2022, 12.09.2022, Aachen, Germany

  21. A. Hoffmann; A. Hoffmann; S. Spiegel; T. Heckmann; P. Scharfer; W. Schabel,
    CFD Simulation of Slot Die Coating for Lithium-Ion Battery Electrodes as Part of a Simulation Platform of the Process Chain (Poster),
    ECS 2021, 22.09.2021, Brüssel, Belgium