Journal Article

FZJ-2019-03956

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Concept for the Analysis of the Electrolyte Composition within the Cell Manufacturing Process: From Sealing to Sample Preparation

Horsthemke, F. ; Winkler, V. ; Diehl, M. ; Winter, M.FZJ* ; Nowak, S. (Corresponding author)

2020
Wiley-VCH Weinheim [u.a.]

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Please use a persistent id in citations: doi:10.1002/ente.201801081

Abstract: Lithium‐ion battery (LIB) cells of the 18650 format are built in‐house with different amounts of an electrolyte. After wetting and prior to subsequent formation, the cells are opened. The electrolyte is regained by centrifuging the entire jelly roll and quantified by a gas chromatography‐flame ionization detector (GC‐FID) and inductively coupled plasma‐optical emission spectroscopy (ICP‐OES). The influence of a filling protocol applying cycles with over‐ and reduced pressure is examined with a focus on the electrolyte composition. No significant difference is found in the ratio of linear (LC) to cyclic carbonates (CCs). Furthermore, extraction by centrifugation is investigated in different scenarios by simulating almost “dry” cells to minimize alterations during the sample preparation. The quantification of these electrolytes indicates a slightly reduced amount of LC in the sample.

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Contributing Institute(s):

1. Helmholtz-Institut Münster Ionenleiter für Energiespeicher (IEK-12)

Research Program(s):

1. 131 - Electrochemical Storage (POF3-131) (POF3-131)

Appears in the scientific report 2020

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Database coverage:
Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Ebsco Academic Search ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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