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DOI: 10.5445/IR/1000080523
Frei zugänglich ab 20.02.2019
DOI: 10.1117/12.2288440

Laser in battery manufacturing: impact of intrinsic and artificial electrode porosity on chemical degradation and battery lifetime

Smyrek, Peter; Zheng, Yijing; Seifert, Hans Jürgen; Pfleging, Wilhelm; Klotzbach, Udo [Hrsg.]; Washio, Kunihiko [Hrsg.]; Kling, Rainer [Hrsg.]

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.

Zugehörige Institution(en) am KIT Institut für Angewandte Materialien - Angewandte Werkstoffphysik (IAM-AWP)
Publikationstyp Proceedingsbeitrag
Jahr 2018
Sprache Englisch
Identifikator ISBN: 978-1-5106-1525-0
URN: urn:nbn:de:swb:90-805233
KITopen ID: 1000080523
HGF-Programm 37.01.02; LK 01
Erschienen in Laser-based Micro- and Nanoprocessing XII, San Francisco, United States, 27 January–1 February 2018
Verlag SPIE, Bellingham, WA
Seiten 47 S.
Projektinformation FabSurfWAR (EU, H2020, 644971)
Schlagworte Laser-induced breakdown spectroscopy porosity ultrafast laser structuring lithium-ion battery lithium nickel manganese cobalt oxide cathode
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