Titlebar

Export bibliographic data
Literature by the same author
plus on the publication server
plus at Google Scholar

 

Simulation-Supported Analysis of Calendering Impacts on the Performance of Lithium-Ion-Batteries

Title data

Lenze, Georg ; Röder, Fridolin ; Bockholt, Henrike ; Haselrieder, Wolfgang ; Kwade, Arno ; Krewer, Ulrike:
Simulation-Supported Analysis of Calendering Impacts on the Performance of Lithium-Ion-Batteries.
In: Journal of The Electrochemical Society. Vol. 164 (2017) Issue 6 . - S. A1223-A1233.
ISSN 1945-7111
DOI: https://doi.org/10.1149/2.1141706jes

Abstract in another language

A combination of experimental and model based analysis was performed to investigate calendering impacts on the performance of lithium-ion-batteries. When discharging, not only geometric parameters, such as electrode thicknesses and porosities are affecting performance. Calendering also impacts on other parameters, such as the effective ionic conductivity within the electrolyte, the effective electronic conductivity of solid active material and the effective solid-liquid interfacial area. The simulation supported method is shown to complement experimental analysis to understand correlations between calendering and these parameters; it enables to identify cell internal parameters which are hard to measure and to analyze how the lithium transport is affected. In experiments, cells containing non-calendered cathodes performed significantly worse than ones with 22%-calendered cathodes. Simulation indicated that this losses consist mainly of a deterioration of effective electronic conductivity leading to overpotentials close to the separator. Minor contributions to the losses in non-calendered cathodes caused by the geometric compaction and a reduction of effective solid-liquid interfacial area were found as well, whereas the impact of effective ionic conductivity turned out to be only insignificantly small.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties
Faculties > Faculty of Engineering Science > Junior Professor Methods of Monitoring and Managing Batteries > Junior Professor Methods of Monitoring and Managing Batteries - Juniorprof. Dr.-Ing. Fridolin Röder
Faculties > Faculty of Engineering Science > Junior Professor Methods of Monitoring and Managing Batteries
Result of work at the UBT: No
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 20 Nov 2020 08:16
Last Modified: 27 Nov 2020 07:34
URI: https://eref.uni-bayreuth.de/id/eprint/59661