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Electro-Chemical Modelling of Laser Structured Electrodes

Pichler, Franz; Fröhlich, Katja; Zheng, Yijing; Pfleging, Wilhelm ORCID iD icon; Thaler, Alexander


A simulation study performed in the scope of the project RealLi! is presented. One of the project’s main goals is to improve NMC811 and graphite electrode cycling capacities at high C-rates. The rapid charging and discharging capability of batteries is improved using laser ablation to introduce structures into the surface of the electrode composite layers. Due to improved transport kinetics, this not only improves the electrochemical properties in the high-current range, but also homogenizes and accelerates the electrolyte wetting during production as a side effect. This is particularly advantageous in thick-film electrodes for providing high energy densities. This study supports the laser structuring process of battery electrodes [1][2] via a virtual optimisation, based on electro-chemical battery models. The electrodes are structured by ultrafast laser ablation, with parallel channels being introduced along the electrode surface. This modification enables an easier electrolyte penetration, a reduced charge transfer resistance, and shortened lithium-ion transport pathways which finally leads to a reduced diffusion overpotential at high C-rates. ... mehr

Postprint §
DOI: 10.5445/IR/1000141207
Veröffentlicht am 14.11.2022
DOI: 10.1149/ma2021-012183mtgabs
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien – Angewandte Werkstoffphysik (IAM-AWP)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 30.05.2021
Sprache Englisch
Identifikator ISSN: 2151-2043
KITopen-ID: 1000141207
HGF-Programm 38.02.02 (POF IV, LK 01) Components and Cells
Erschienen in Meeting abstracts
Verlag Société d'Etudes des Sciences Naturelles (SESNNG)
Band MA2021-01
Heft A02
Seiten Art.-Nr.: 183
Projektinformation RealLi (FFG-AT, 873396)
Bemerkung zur Veröffentlichung ECS Meeting Abstracts, Volume MA2021-01, A02: Lithium Ion Batteries Citation
Nachgewiesen in Dimensions
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