Methodology for the characterization and understanding of longitudinal wrinkling during calendering of lithium-ion and sodium-ion battery electrodes
Abstract (englisch):
"The manufacturing of lithium-ion battery (LIB) cells is following a complex process chain in which the individual process steps influence the
subsequent ones. Meanwhile, increasing requirements especially concerning the battery performance, sustainability and costs are forcing the
development of innovative battery materials, production technologies and battery designs. The calendering process directly affects the volumetric
energy density of an electrode and therefore of a battery cell. Calendering is still challenging as it causes high stresses in the electrode that lead
to defects and thus increased rejection rates. The interaction between electrode material and process as well as the formation of defects is still not
fully understood, especially when new material systems are used. In this context, the sodium-ion battery (SIB) is one post-lithium battery system
that is a promising option to overcome the limitations of conventional LIBs. Therefore, this paper presents a first material and machine
independent methodology to describe and understand the defect type longitudinal wrinkle, which mostly appears at the uncoated current collector
... mehr
subsequent ones. Meanwhile, increasing requirements especially concerning the battery performance, sustainability and costs are forcing the
development of innovative battery materials, production technologies and battery designs. The calendering process directly affects the volumetric
energy density of an electrode and therefore of a battery cell. Calendering is still challenging as it causes high stresses in the electrode that lead
to defects and thus increased rejection rates. The interaction between electrode material and process as well as the formation of defects is still not
fully understood, especially when new material systems are used. In this context, the sodium-ion battery (SIB) is one post-lithium battery system
that is a promising option to overcome the limitations of conventional LIBs. Therefore, this paper presents a first material and machine
independent methodology to describe and understand the defect type longitudinal wrinkle, which mostly appears at the uncoated current collector
... mehr
| Zugehörige Institution(en) am KIT | Institut für Produktionstechnik (WBK) Materialwissenschaftliches Zentrum für Energiesysteme (MZE) |
| Publikationstyp | Zeitschriftenaufsatz |
| Publikationsmonat/-jahr | 01.2024 |
| Sprache | Englisch |
| Identifikator | ISSN: 2212-8271 KITopen-ID: 1000169124 |
| Erschienen in | 56th CIRP Conference on Manufacturing Systems, CIRP CMS ‘23, South Africa Hrsg.: Mpofu, Khumbulani; Sacks, Natasha; Damm, Oliver |
| Verlag | Elsevier |
| Band | 120 |
| Seiten | 314–319 |
| Vorab online veröffentlicht am | 12.01.2024 |
| Schlagwörter | lithium-ion battery, sodium-ion battery, electrode manufacturing, calendering, longitudinal wrinkling |
| Nachgewiesen in | Scopus Dimensions |