Journal Article

IMPULSE-2018-00083

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Visualization of electrolyte filling process and influence of vacuum during filling for hard case prismatic lithium ion cells by neutron imaging to optimize the production process

Weydanz, W. J. (Corresponding author) ; Reisenweber, H. ; Gottschalk, A. ; Schulz, M.MLZ* ; Knoche, T. ; Reinhart, G. ; Masuch, M. ; Franke, J.MLZ* ; Gilles, R.MLZ*

2018
Elsevier New York, NY [u.a.]

Please use a persistent id in citations: doi:10.1016/j.jpowsour.2018.01.081

Abstract: The process of filling electrolyte into lithium ion cells is time consuming and critical to the overall battery quality. However, this process is not well understood. This is partially due to the fact, that it is hard to observe it in situ. A powerful tool for visualization of the process is neutron imaging. The filling and wetting process of the electrode stack can be clearly visualized in situ without destruction of the actual cell. The wetting of certain areas inside the electrode stack can clearly be seen when using this technique.Results showed that wetting of the electrode stack takes place in a mostly isotropic manner from the outside towards a center point of the cell at very similar speed. When the electrolyte reaches the center point, the wetting process can be considered complete. The electrode wetting is a slow but rather steady process for hard case prismatic cells. It starts with a certain speed, which is reduced over the progress of the wetting. Vacuum can assist the process and accelerate it by about a factor of two as was experimentally shown. This gives a considerable time and cost advantage for designing the production process for large-scale battery cell production.

Keyword(s): Energy (1st) ; Industrial Application (2nd)

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Contributing Institute(s):

1. ANTARES
2. MATSCI

Experiment(s):

1. ANTARES: Cold neutron radiography and tomography station (SR4a)

Appears in the scientific report 2018

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Database coverage:
; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF >= 5 ; JCR ; NCBI Molecular Biology Database ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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