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

Smyrek, Peter 1; Zheng, Yijing 1; Seifert, Hans Jürgen 1; Pfleging, Wilhelm ORCID iD icon 1; Klotzbach, Udo [Hrsg.]; Washio, Kunihiko [Hrsg.]; Kling, Rainer [Hrsg.]
1 Institut für Angewandte Materialien – Angewandte Werkstoffphysik (IAM-AWP), Karlsruher Institut für Technologie (KIT)

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.


Postprint §
DOI: 10.5445/IR/1000080523
Veröffentlicht am 20.02.2019
Originalveröffentlichung
DOI: 10.1117/12.2288440
Scopus
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien – Angewandte Werkstoffphysik (IAM-AWP)
Publikationstyp Proceedingsbeitrag
Publikationsdatum 19.02.2018
Sprache Englisch
Identifikator ISBN: 978-1-5106-1525-0
urn:nbn:de:swb:90-805233
KITopen-ID: 1000080523
HGF-Programm 37.01.02 (POF III, LK 01) Components and Cells
Erschienen in Laser-based Micro- and Nanoprocessing XII, San Francisco, United States, 27 January–1 February 2018
Verlag Society of Photo-optical Instrumentation Engineers (SPIE)
Seiten 47 S.
Projektinformation FabSurfWAR (EU, H2020, 644971)
Schlagwörter Laser-induced breakdown spectroscopy, porosity, ultrafast laser structuring, lithium-ion battery, lithium nickel manganese cobalt oxide, cathode, Proposal-ID: 2016-016-013609 (KNMF-LMP)
Nachgewiesen in Scopus
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