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Laser beam assembly of lithium metal anodes
  • Bachelor and Master Thesis
    • Battery research: Selective laser sintering for use in future batteries
    • Evaluation of the influence of particle contamination depending on the separator and compression using the Hi-Pot Test
    • Contacting of metal-polymer current collectors for use in cylindrical cells: Concept development and validation
    • Optimization of a bending test for the mechanical characterization of battery electrodes
    • Influence of cutting process and free cut edge geometry on the Al-5083 fatigue strength
    • Design and testing of a device and method for the in-situ calibration of force sensors in the die casting process
    • Laser beam assembly of lithium metal anodes
    • Laser pretreatment of die-cast aluminium for in-mold assembly with plastic
    • Prediction of component properties in high-pressure die casting using machine learning
    • Remelting effect on temperature field, residual stress, and distortion in WAAM components
    • Residual stress variations during fabrication
    • Conversion and test of a heating system
    • Investigation of the local suitability for adhesive bonding of aluminium die-cast components
    • Investigation of the local suitability for welding of aluminium die-cast components
    • Influence of thermal cutting processes on the quality of the cut edges
    • Toughness of high strength welded steels

Laser beam assembly of lithium metal anodes

Background

All-solid-state approaches promise highest energy densities for lithium-ion batteries. On the cathode side, intensive research is being carried out, whereas on the anode side, the use of pure lithium metal is predominantly referred to. However, handling and processing of lithium metal is problematic, since lithium is a highly reactive alkali metal. Laser cutting has already proven to be a flexible and wearless process for the use of the electrode assembly for the production of lithium-ion batteries. Due to this highly reproducible assembly, laser cutting represents a qualitatively robust method for separating lithium metal.

Task

Within the scope of this student research project, various laser sources will be used for the fabrication of lithium metal foils. Subsequently, the separated electrodes will be examined regarding the different influences of the achieved cut edges on the electrochemical performance.

Cutting edge of a laser beam assembly Lithium metal anode
Cutting edge of a laser beam assembly Lithium metal anode

In the context of a student thesis the following fields of activity arise:

  • Literature research
  • Performance of parameter studies for the separation of lithium metal anodes
  • Optical analysis and characterization of the cut edges
  • Analysis of the electrochemical performance
  • Interpretation of the results
  • Presentation of the results

Amount of work

The scope of the work is scalable and therefore allows for both bachelor and master thesis. For a detailed task description, please contact the supervising research assistant.

Requirements

  • Independent, structured way of working
  • Interest in scientific work
  • Known requirements of the faculty for the submission of student papers

Start

Immediately possible despite corona

Lars Schmidt
+ 49 531 391 955 97
lar.schmidt(at)tu-braunschweig.de
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