Title:	Process temperature measurement during nanosecond pulse laser micromachining of Li-Ion battery electrodes
Authors:	Kleefoot, Max Jonathan Martan, Jiří Ballardin Beltrami, Carlos Sandherr, Jens Honner, Milan Ruck, Simon Knoblauch, Volker Riegel, Harald
Citation:	KLEEFOOT, MJ. MARTAN, J. BALLARDIN BELTRAMI, C. SANDHERR, J. HONNER, M. RUCK, S. KNOBLAUCH, V. RIEGEL, H. Process temperature measurement during nanosecond pulse laser micromachining of Li-Ion battery electrodes. In Procedia CIRP. Fürth: ELSEVIER, 2022. s. 806-809. ISBN: neuvedeno , ISSN: 2212-8271
Issue Date:	2022
Publisher:	ELSEVIER
Document type:	konferenční příspěvek ConferenceObject
URI:	http://hdl.handle.net/11025/51630
ISSN:	2212-8271
Keywords in different language:	Infrared radiation;binder ablation;microstructure;lithium-ion battery
Abstract in different language:	Surface functionalization as well as the microstructure modification of electrodes by laser material processing has become increasingly important in recent years. Short and ultra-short pulsed lasers, which enable high-precision processing, are used for this purpose. However, the process mechanisms, such as the surface temperatures that emerge during the process are not fully understood yet. New infrared high-speed detectors and their application allow to close this gap. In the present study, the infrared emissions of the selective ablation process of Li-ion battery electrodes areinvestigated experimentally. The electrode consists of graphite active material embedded in a carbon/binder domain. Due to the compaction of high-energy electrodes, pore clogging occurs, which hinders its fast-charging capability and the electrolyte wettability. The selective ablation of the surface binder phase significantly improves these two properties. The investigation of pure graphite material results in lower heat accumulation values but comparable peak values in comparison to the compacted electrode.
Rights:	© authors
Appears in Collections:	Konferenční příspěvky / Conference papers Konferenční příspěvky / Conference papers (KTO) OBD

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