High power ultrafast laser processing of electrodes: Up-scaling in roll-to-roll environment

Alexandra Meyer; Penghui Zhu; Wilhelm Pfleging

doi:10.1117/12.2577196

5 March 2021 High power ultrafast laser processing of electrodes: Up-scaling in roll-to-roll environment

Alexandra Meyer, Penghui Zhu, Wilhelm Pfleging

Proceedings Volume 11674, Laser-based Micro- and Nanoprocessing XV; 116741A (2021) https://doi.org/10.1117/12.2577196
Event: SPIE LASE, 2021, Online Only

Abstract

The introduction of laser-generated 3D capillary structures in electrodes of Li-ion cells enables a more homogenized electrolyte wetting, which helps avoiding warm aging and shortens cell storage time prior and after electrochemical formation. In this study, the roll-to-roll (R2R) laser patterning of graphite anode material with a high-power ultrafast laser source was investigated. The governing parameters of laser structuring and their impact on active mass loss, electrode architecture, and electrolyte wetting behavior were analyzed. The trade-off between the quality of the structures and the processing times for an optimized R2R-processing was assessed. The application of a diffractive beam-splitter was evaluated.

Conference Presentation

Citation Download Citation

Alexandra Meyer, Penghui Zhu, and Wilhelm Pfleging "High power ultrafast laser processing of electrodes: Up-scaling in roll-to-roll environment", Proc. SPIE 11674, Laser-based Micro- and Nanoprocessing XV, 116741A (5 March 2021); https://doi.org/10.1117/12.2577196

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