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@ARTICLE{Pyschik:851134,
author = {Pyschik, Marcelina and Winter, Martin and Nowak, Sascha},
title = {{C}apillary {E}lectrophoresis as {A}nalysis {T}echnique for
{B}attery {E}lectrolytes: (i) {M}onitoring {S}tability of
{A}nions in {I}onic {L}iquids and (ii) {D}etermination of
{O}rganophosphate-{B}ased {D}ecomposition {P}roducts in
{L}i{PF}6-{B}ased {L}ithium {I}on {B}attery {E}lectrolytes},
journal = {Separations},
volume = {4},
number = {3},
issn = {2297-8739},
address = {Basel},
publisher = {MDPI},
reportid = {FZJ-2018-04836},
pages = {26 -},
year = {2017},
abstract = {In this work, a method for capillary electrophoresis (CE)
hyphenated to a high-resolution mass spectrometer was
presented for monitoring the stability of anions in ionic
liquids (ILs) and in commonly used lithium ion battery (LIB)
electrolytes. The investigated ILs were
1-methyl-1-propylpyrrolidinium
bis(trifluoromethanesulfonyl)imide (PYR13TFSI) and
1-methyl-1-propylpyrrolidinium bis(fluorosulfonyl)imide
(PYR13FSI). The method development was conducted by
adjusting the following parameters: buffer compositions,
buffer concentrations, and the pH value. Also the
temperature and the voltage applied on the capillary were
optimized. The ILs were aged at room temperature and at 60
°C for 16 months each. At both temperatures, no anionic
decomposition products of the FSI− and TFSI− anions were
detected. Accordingly, the FSI− and TFSI− anions were
thermally stable at these conditions. This method was also
applied for the investigation of LIB electrolyte samples,
which were aged at 60 °C for one month. The LP30 (50/50 wt.
$\%$ dimethyl carbonate/ethylene carbonate and 1 M lithium
hexafluorophosphate) electrolyte was mixed with the additive
1,3-propane sultone (PS) and with one of the following
organophosphates (OP): dimethyl phosphate (DMP), diethyl
phosphate (DEP), and triethyl phosphate (TEP), to
investigate the influence of these compounds on the
formation of OPs.},
cin = {IEK-12},
ddc = {540},
cid = {I:(DE-Juel1)IEK-12-20141217},
pnm = {131 - Electrochemical Storage (POF3-131)},
pid = {G:(DE-HGF)POF3-131},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000411999000003},
doi = {10.3390/separations4030026},
url = {https://juser.fz-juelich.de/record/851134},
}