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
1; Klotzbach, Udo [Hrsg.]; Washio, Kunihiko [Hrsg.]; Kling, Rainer [Hrsg.]
1 Institut für Angewandte Materialien – Angewandte Werkstoffphysik (IAM-AWP), Karlsruher Institut für Technologie (KIT)
1; Seifert, Hans Jürgen 1; Pfleging, Wilhelm
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.
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 |
| 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 Dimensions |
| Globale Ziele für nachhaltige Entwicklung |