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

Meyer, Alexandra ORCID iD icon; Zhu, Penghui; Pfleging, Wilhelm ORCID iD icon


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.

Zugehörige Institution(en) am KIT Institut für Angewandte Materialien – Angewandte Werkstoffphysik (IAM-AWP)
Publikationstyp Vortrag
Publikationsdatum 05.03.2021
Sprache Englisch
Identifikator KITopen-ID: 1000141205
HGF-Programm 38.02.02 (POF IV, LK 01) Components and Cells
Veranstaltung SPIE Photonics West LASE (SPIE LASE 2021), Online, 06.03.2021 – 12.03.2021
Projektinformation Next-Gen-3DBat (BMBF, 03XP0198F)
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