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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},
}