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Laser Processing of Battery Materials - Process Up-Scaling and Strategies for Tuning of Materials Properties

Pfleging, Wilhelm; Smyrek, Peter; Zhu, Penghui; Cheng, X.; Zhang, Y.; Zheng, Yijing

Abstract:
Laser technologies that are suitable for the production of batteries can be divided into three categories: 1st laser cutting and welding; 2nd laser structuring, modification and annealing; and 3rd laser diagnostics. Laser cutting and welding reached already a high mature level and commercial applications. However, those technologies have in general no significant impact on battery performances. This is completely different for the 2nd category where a substantial improvement of cell lifetime, high rate capability, and gravimetric or volumetric energy density are intended to be reached. Such laser-induced tuning of material properties is mainly due to modified electrode architectures of the composite materials caused by capillary features, free-standing structures, variation in porosity, or increased active surface area. The technology readiness level of 2nd category covers so far basic research, feasibility studies, and technology development on lab scale (TRL 4). High power ultrafast laser structuring of electrodes within the next few years will reach technology demonstration level (TRL 5-7). For this purpose lab-scale laser structuring of nickel-rich lithium nickel manganese cathodes and high energy anode materials is going to be transferred to roll-to-roll processing. ... mehr



Zugehörige Institution(en) am KIT Institut für Angewandte Materialien - Angewandte Werkstoffphysik (IAM-AWP)
Publikationstyp Vortrag
Publikationsdatum 05.02.2020
Sprache Englisch
Identifikator KITopen-ID: 1000125685
HGF-Programm 37.01.02 (POF IV, LK 01) Components and Cells
Weitere HGF-Programme 49.01.09 (POF III, LK 02) Laser Material Processing
Veranstaltung 14th Laser-based Micro- and Nanoprocessing (2020), San Francisco, CA, USA, 03.02.2020 – 06.02.2020
Projektinformation DFG, DFG EIN, PF 392/9-1
Externe Relationen Siehe auch
Schlagwörter Ultrafast laser 3D battery cathode anode lithium-ion battery laser-induced breakdown spectroscopy up-scaling
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