TY  - JOUR
AU  - Horsthemke, Fabian
AU  - Winkler, Volker
AU  - Diehl, Marcel
AU  - Winter, Martin
AU  - Nowak, Sascha
TI  - Concept for the Analysis of the Electrolyte Composition within the Cell Manufacturing Process: From Sealing to Sample Preparation
JO  - Energy technology
VL  - 8
IS  - 2
SN  - 2194-4296
CY  - Weinheim [u.a.]
PB  - Wiley-VCH
M1  - FZJ-2019-03956
SP  - 1801081
PY  - 2020
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000511910200013
DO  - DOI:10.1002/ente.201801081
UR  - https://juser.fz-juelich.de/record/864040
ER  -