TY  - JOUR
AU  - Dagger, Tim
AU  - Henschel, Jonas
AU  - Rezaei Rad, Babak
AU  - Lürenbaum, Constantin
AU  - Schappacher, Falko M.
AU  - Winter, Martin
AU  - Nowak, Sascha
TI  - Investigating the lithium ion battery electrolyte additive tris (2,2,2-trifluoroethyl) phosphite by gas chromatography with a flame ionization detector (GC-FID)
JO  - RSC Advances
VL  - 7
IS  - 84
SN  - 2046-2069
CY  - London
PB  - RSC Publishing
M1  - FZJ-2018-04808
SP  - 53048 - 53055
PY  - 2017
AB  - The quantification of lithium ion battery electrolyte additives provides challenges in terms of methods and instrumentation. In this work, the detectability of the flame retardant additive tris(2,2,2-trifluoroethyl) phosphite (TTFPi) differs unusually when added to a standard electrolyte (1 M LiPF6 in ethylene carbonate (EC)[thin space (1/6-em)]:[thin space (1/6-em)]dimethyl carbonate (DMC) 1[thin space (1/6-em)]:[thin space (1/6-em)]1 wt%) using gas chromatography with a flame ionization detector (GC-FID). In this work, nuclear magnetic resonance (NMR), ion trap time of flight mass spectrometry (IT-TOF™ MS) and gas chromatography-mass spectrometry (GC-MS) are used to investigate a pure TTFPi solution and a standard battery electrolyte with TTFPi as an additive with regard to parasitic TTFPi consuming reactions and different TTFPi concentrations, respectively. NMR and IT-TOF™ MS measurements confirm the chemical stability of the TTFPi/standard electrolyte mixture and concentration dependent GC-MS and GC-FID experiments indicate a premature FID saturation limit for TTFPi in presence of standard electrolyte. The findings explain the counterintuitive absence of TTFPi for higher concentrations and provide important information for future sample preparation.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000416049900002
DO  - DOI:10.1039/C7RA09476K
UR  - https://juser.fz-juelich.de/record/851106
ER  -