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Laser in battery manufacturing: impact of intrinsic and artificial electrode porosity on chemical degradation and battery lifetime
Author(s): P. Smyrek; Y. Zheng; H. J. Seifert; W. Pfleging
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Paper Abstract

The main goal is to develop an optimized three-dimensional (3D) cell design with improved electrochemical properties, which can be correlated to a characteristic lithium distribution along 3D micro-structures at different State-of-Health (SoH). 3D elemental mapping was applied for characterizing the whole electrode as function of SoH. It was demonstrated that fs-laser generated 3D architectures improves the battery performance regarding battery power and lifetime. It was quantitatively shown by laser-induced breakdown spectroscopy that 3D architectures act as attractor for lithium-ions. Furthermore, lateral intrinsic porosity variations were identified to be possible starting points for lithium plating and subsequent cell degradation. Results achieved from post-mortem studies of cells with laser structured electrodes (intrinsic and artificial porosity variation), and unstructured lithium-nickel-manganese-cobalt-oxide electrodes will be presented.

Paper Details

Date Published: 19 February 2018
PDF: 7 pages
Proc. SPIE 10520, Laser-based Micro- and Nanoprocessing XII, 1052017 (19 February 2018); doi: 10.1117/12.2288440
Show Author Affiliations
P. Smyrek, Karlsruher Institut für Technologie (Germany)
Karlsruhe Nano Micro Facility (Germany)
Y. Zheng, Karlsruher Institut für Technologie (Germany)
H. J. Seifert, Karlsruher Institut für Technologie (Germany)
W. Pfleging, Karlsruher Institut für Technologie (Germany)
Karlsruhe Nano Micro Facility (Germany)


Published in SPIE Proceedings Vol. 10520:
Laser-based Micro- and Nanoprocessing XII
Udo Klotzbach; Kunihiko Washio; Rainer Kling, Editor(s)

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